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Journal articles on the topic 'Phosphates'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Wolschendorf, Frank, Maysa Mahfoud, and Michael Niederweis. "Porins Are Required for Uptake of Phosphates by Mycobacterium smegmatis." Journal of Bacteriology 189, no. 6 (2007): 2435–42. http://dx.doi.org/10.1128/jb.01600-06.

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ABSTRACT Phosphorus is an essential nutrient, but how phosphates cross the mycobacterial cell wall is unknown. Phosphatase activity in whole cells of Mycobacterium smegmatis was significantly lower than that in lysed cells, indicating that access to the substrate was restricted. The loss of the outer membrane (OM) porin MspA also reduced the phosphatase activity in whole cells compared to that in lysed cells. A similar result was obtained for M. smegmatis that overexpressed endogenous alkaline phosphatase, indicating that PhoA is not a surface protein, contrary to a previous report. The uptake

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2

Asenjo, Ana, Lorena Rodríguez, and Nieves Villanueva. "Determination of phosphorylated residues from human respiratory syncytial virus P protein that are dynamically dephosphorylated by cellular phosphatases: a possible role for serine 54." Journal of General Virology 86, no. 4 (2005): 1109–20. http://dx.doi.org/10.1099/vir.0.80692-0.

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The 241 aa human respiratory synctyial virus (HRSV) Long strain P protein is phosphorylated at serines 116, 117 and/or 119, and 232. Phosphates added to these residues have slow turnover and can be detected in the absence of protein phosphatase inhibition. Inhibition of phosphatases PP1 and PP2A increases the level of phosphorylation at serines 116, 117 and/or 119, suggesting a more rapid turnover for phosphates added to these residues compared to that of S232. High-turnover phosphorylation is detected in the P-protein NH2-terminal region, mainly at S54 and, to a lesser extent, at S39, in the

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3

Jamroz, Dorota, Agnieszka Gajda-Janiak, Zbigniew Wzorek, Zygmunt Kowalski, and Janusz Kubizna. "Chemical and Biological Characteristics of Different Hydrated Monocalcium Phosphates for Broiler Chickens." Annals of Animal Science 12, no. 2 (2012): 187–200. http://dx.doi.org/10.2478/v10220-012-0016-4.

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Chemical and Biological Characteristics of Different Hydrated Monocalcium Phosphates for Broiler ChickensThree hydrated monocalcium phosphates differing in purity (with or without monetite, or monetite and calcite) and in crystalline structure were used in broiler chickens diets. The performance indices, concentration of Ca, P and Mg and activity of alkaline phosphatase in blood plasma, the content of these mineral elements in bones, and physico-mechanical parameters of femur and tibia bones were recorded. Body weight on 35th day of life, feed intake and mechanical parameters of bone quality w

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4

de Groot, H., H. de Groot, and T. Noll. "Enzymic determination of inorganic phosphates, organic phosphates and phosphate-liberating enzymes by use of nucleoside phosphorylase-xanthine oxidase (dehydrogenase)-coupled reactions." Biochemical Journal 230, no. 1 (1985): 255–60. http://dx.doi.org/10.1042/bj2300255.

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Coupled enzyme assays are described for measuring inorganic phosphates, organic phosphates and phosphate-liberating enzymes in biological material. The assays all determine Pi by its reaction with inosine, catalysed by nucleoside phosphorylase; this yields ribose 1-phosphate and hypoxanthine. The hypoxanthine is oxidized to uric acid by xanthine oxidase, and may be measured either by the absorbance of the uric acid, or by the formazan formed when a tetrazolium salt is used as the oxidant. The coupled enzyme assays are characterized by high sensitivity, quantitative utilization of phosphates an

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5

Tang, Xiaoyun, and David N. Brindley. "Lipid Phosphate Phosphatases and Cancer." Biomolecules 10, no. 9 (2020): 1263. http://dx.doi.org/10.3390/biom10091263.

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Lipid phosphate phosphatases (LPPs) are a group of three enzymes (LPP1–3) that belong to a phospholipid phosphatase (PLPP) family. The LPPs dephosphorylate a wide spectrum of bioactive lipid phosphates, among which lysophosphatidate (LPA) and sphingosine 1-phosphate (S1P) are two important extracellular signaling molecules. The LPPs are integral membrane proteins, which are localized on plasma membranes and intracellular membranes, including the endoplasmic reticulum and Golgi network. LPPs regulate signaling transduction in cancer cells and demonstrate different effects in cancer progression

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6

Kidder, D. L., and K. Swett. "Basal Cambrian reworked phosphates from Spitsbergen (Norway) and their implications." Geological Magazine 126, no. 1 (1989): 79–88. http://dx.doi.org/10.1017/s0016756800006166.

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AbstractSeveral phosphatic zones are associated with the oldest remains of shelly fossils on the arctic island of Spitsbergen. The phosphate occurs as reworked nodules and layers associated with a disconformity. A gap in the acritarch biostratigraphic record supports a hiatus associated with the phosphatic zone. Palaeogeographic positions for Svalbard, both (1) as a single unit, and (2) as three isolated parts prior to Caledonian tectonism are consistent with conditions favourable to at least minimal amounts of upwelling. However, upwelling may not have been a prerequisite for development of t

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7

Klumpp, Susanne, Jan Hermesmeier, Dagmar Selke, Ralf Baumeister, Roland Kellner, and Josef Krieglstein. "Protein Histidine Phosphatase: A Novel Enzyme with Potency for Neuronal Signaling." Journal of Cerebral Blood Flow & Metabolism 22, no. 12 (2002): 1420–24. http://dx.doi.org/10.1097/01.wcb.0000045041.03034.99.

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The importance of reversible phosphorylation for neuronal signaling and cell survival is well recognized. Knowledge in vertebrates, however, is so far limited to O-phosphates from serine, threonine, and tyrosine. The authors describe an enzyme acting on N-phosphates. It is the first protein histidine phosphatase identified in vertebrates. This histidine phosphatase is ubiquitously expressed in mammalian tissues including brain. Characterization and sequencing showed a yet unknown protein with no similarity to other phosphatases. In Caenorhabditis elegans, the homolog of this histidine phosphat

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8

Nignan, Iliassou, Jean Ouedraogo, Satoshi Nakamura, Idriss Serme, and Kalifa Coulibaly. "Effets du mode d’application d’engrais phosphatés (CBKCa et TSP) sur la productivité du mil (Pennisetum glaucum (L.) R. Br) au centre ouest du Burkina Faso." International Journal of Biological and Chemical Sciences 17, no. 6 (2024): 2312–24. http://dx.doi.org/10.4314/ijbcs.v17i6.14.

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La distance d’application des phosphatés pourrait influencer la réponse des cultures à la fertilisation phosphatée due à la faible mobilité du phosphore. Ainsi, une étude a été conduite en 2021 et 2022 à Saria, pour évaluer l’effet de la distance d’application de deux engrais phosphatés sur la productivité du mil. Se sont le Burkina Phosphate calciné enrichi en calcium (CBKCa) et triple super phosphate (TSP). Pour ce faire, un dispositif factoriel avec quatre répétitions a été installé. Les phosphates ont été appliquées sur les parcelles principales à trois distances d’application (0 ; 5 et 10

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9

Höer, A., and E. Oberdisse. "Inositol 1,3,4,5,6-pentakisphosphate and inositol hexakisphosphate are inhibitors of the soluble inositol 1,3,4,5-tetrakisphosphate 3-phosphatase and the inositol 1,4,5-trisphosphate/1,3,4,5-tetrakisphosphate 5-phosphatase from pig brain." Biochemical Journal 278, no. 1 (1991): 219–24. http://dx.doi.org/10.1042/bj2780219.

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The influence of highly phosphorylated inositol phosphates on the Ins(1,3,4,5)P4 3-phosphatase enriched from the soluble fraction of pig brain was tested, using [5-32P]Ins(1,3,4,5)P4 as substrate. Both Ins(1,3,4,5,6)P5 and InsP6 were very potent inhibitors of the Ins(1,3,4,5)P4 3-phosphatase. The Ki values were approximately 60 nM and approximately 3 nM for Ins(1,3,4,5,6)P5 and InsP6 respectively. Ins(1,3,4,5,6)P5 and InsP6 also inhibited the Ins(1,4,5)P3/Ins(1,3,4,5)P4 5-phosphatase. Using Ins(1,3,4,5)P4 as substrate, the Ki values were about 35 microM and 15 microM for Ins(1,3,4,5,6)P5 and I

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10

SUÁREZ, V. B., L. FRISÓN, M. Z. de BASÍLICO, M. RIVERA, and J. A. REINHEIMER. "Inhibitory Activity of Phosphates on Molds Isolated from Foods and Food Processing Plants." Journal of Food Protection 68, no. 11 (2005): 2475–79. http://dx.doi.org/10.4315/0362-028x-68.11.2475.

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Six commercial phosphates were evaluated for inhibition of the growth of 17 molds isolated from food sources. The assays were performed at neutral and natural (without pH adjustment) pH values, and the molds were streaked on plate count agar with added phosphates. Phosphate concentrations of 0.1, 0.3, 0.5, 1.0, and 1.5% (wt/vol) were used, and the MIC was determined. The resistance of molds to phosphates depended on the species. At a neutral pH, Aspergillus ochraceus and Fusarium proliferatum were resistant to all phosphates at all concentrations assayed, and Byssochlamys nivea, Aureobasidium

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11

Le Mare, P. H. "Rock Phosphates in Agriculture." Experimental Agriculture 27, no. 4 (1991): 413–22. http://dx.doi.org/10.1017/s0014479700019396.

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SUMMARYThe principles that control effectiveness of rock phosphates as fertilizer are now fairly well understood so that the potential effect of a material can be predicted with some confidence from laboratory analysis of the raw material. Soil characteristics, especially acidity, and calcium and phosphate status, are important: if these are not conducive to dissolution, crop response to rock phosphate is small. Some crop characteristics, especially the extent of root systems and whether they are infected with mycorrhizae, also affect utilization of rock phosphate. Dissolution of rock phosphat

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12

Füleky, György. "Phosphorus Supply of Typical Hungarian Soils." Agrokémia és Talajtan 55, no. 1 (2006): 117–26. http://dx.doi.org/10.1556/agrokem.55.2006.1.13.

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The new hot water percolation (HWP) method was introduced to determine the phosphorus supply of soils from the Soil Bank of 36 Hungarian soils. The present work aimed to explain the availability of phosphorus by determining the inorganic phosphate fractions and using ryegrass test plants. Four inorganic phosphate fractions were distinguished: Fraction I, the sorbed phosphates; Fraction II, the easily soluble Ca phosphates and the Al bound phosphates; Fraction III, the Fe phosphates; and Fraction IV, the hardly soluble Ca phosphates. Fraction II, in which the easily soluble Ca phosphates and Al

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13

Timofeeva, Anna, Maria Galyamova, and Sergey Sedykh. "Prospects for Using Phosphate-Solubilizing Microorganisms as Natural Fertilizers in Agriculture." Plants 11, no. 16 (2022): 2119. http://dx.doi.org/10.3390/plants11162119.

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Phosphates are known to be essential for plant growth and development, with phosphorus compounds being involved in various physiological and biochemical reactions. Phosphates are known as one of the most important factors limiting crop yields. The problem of phosphorus deficiency in the soil has traditionally been solved by applying phosphate fertilizers. However, chemical phosphate fertilizers are considered ineffective compared to the organic fertilizers manure and compost. Therefore, increasing the bioavailability of phosphates for plants is one of the primary goals of sustainable agricultu

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14

Helard, Denny, Shinta Indah, and Afdila Ardon. "Analysis of spatial variation of phosphates in Batang Arau River, Indonesia." MATEC Web of Conferences 276 (2019): 06028. http://dx.doi.org/10.1051/matecconf/201927606028.

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This study aims to study the spatial variation of phosphates (orthophosphate, total phosphate, and organic phosphate) in the Batang Arau River, West Sumatera, Indonesia. Sampling was conducted at eight stations along the river from March to May 2014. The results indicate that the three types of phosphates have similar spatial distribution patterns, with an increasing trend in concentration from upstream to downstream. The results also showed that the average orthophosphate and total phosphates concentrations at most of sampling sites had exceeded the quality standard for river water in West Su

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15

Swetha, Seshagiri, and Tallapragada Padmavathi. "Study of Acid Phosphatase in Solubilization of Inorganic Phosphates by Piriformospora indica." Polish Journal of Microbiology 65, no. 4 (2016): 407–12. http://dx.doi.org/10.5604/17331331.1227666.

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Phosphorus is an essential plant macronutrient present in the soil. Only a small portion of phosphorus in soil is taken up by plants and the rest of it becomes unavailable to plants as it is immobilized. Phosphate solubilizing microorganisms play a vital role in converting the insoluble form of phosphates to the soluble form. The present paper reports the solubilization of tricalcium phosphate, rock phosphate, single super phosphate, zinc phosphate and aluminum phosphate by Piriformospora indica with the production of organic acids as well as acid phosphatase. The amount of phosphate released

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16

Kluger, Ronald, Xianfeng Li, and Richard W. Loo. "1996 Bader Award Lecture Aminoacyl ethyl phosphates. Biomimetically activated amino acids." Canadian Journal of Chemistry 74, no. 12 (1996): 2395–400. http://dx.doi.org/10.1139/v96-268.

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Aminoacyl ethyl phosphates are functional analogues of aminoacyl adenylates, the activated intermediates formed by ribosomal enzymes from the reaction of amino acids with ATP. The aminoacyl ethyl phosphates are prepared by DCC-mediated coupling of a tetraalkylammonium salt of ethyl phosphate and an N-t-Boc-amino acid, followed by deprotection. The efficiency of the synthesis and the solubility properties of the product depend on the alkyl group in the ammonium counterion of the phosphate. N-Protected and free aminoacyl ethyl phosphates hydrolyze slowly ([Formula: see text] in neutral solution,

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17

Huck, Jojanneke H. J., Eduard A. Struys, Nanda M. Verhoeven, Cornelis Jakobs, and Marjo S. van der Knaap. "Profiling of Pentose Phosphate Pathway Intermediates in Blood Spots by Tandem Mass Spectrometry: Application to Transaldolase Deficiency." Clinical Chemistry 49, no. 8 (2003): 1375–80. http://dx.doi.org/10.1373/49.8.1375.

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Abstract Background: Recently, several patients with abnormal polyol profiles in body fluids have been reported, but the origins of these polyols are unknown. We hypothesized that they are derived from sugar phosphate intermediates of the pentose phosphate pathway (PPP), and we developed a semiquantitative method for profiling of pentose phosphate pathway intermediates. Methods: Sugar phosphates in blood spots were simultaneously analyzed by liquid chromatography–tandem mass spectrometry using an ion-pair-loaded C18 HPLC column. The tandem mass spectrometer was operated in the multiple-reactio

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18

Bäck, Magnus, and Jean-Baptiste Michel. "From organic and inorganic phosphates to valvular and vascular calcifications." Cardiovascular Research 117, no. 9 (2021): 2016–29. http://dx.doi.org/10.1093/cvr/cvab038.

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Abstract Calcification of the arterial wall and valves is an important part of the pathophysiological process of peripheral and coronary atherosclerosis, aortic stenosis, ageing, diabetes, and chronic kidney disease. This review aims to better understand how extracellular phosphates and their ability to be retained as calcium phosphates on the extracellular matrix initiate the mineralization process of arteries and valves. In this context, the physiological process of bone mineralization remains a human model for pathological soft tissue mineralization. Soluble (ionized) calcium precipitation

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19

L. M., Tokmakova, and Trepach A. O. "PHOSPHORUS BIOTRANSFORMATION IN ROOT ZONE OF CORN PLANTS UNDER ACTION OF AHROBACTERYN AND MINERAL FERTILIZERS." Agriciltural microbiology 34 (November 11, 2021): 44–52. http://dx.doi.org/10.35868/1997-3004.34.44-52.

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Objective. To determine the intensity of phosphorus biotransformation in the root zone of corn plants under the action of the microbial preparation Ahrobacteryn and various rates of mineral fertilizers. Methods. Field experiment (on leached chernozem), microbiological (accounting for the number of phosphate-mobilizing bacteria in the rhizosphere of corn plants, biochemical (determination of phosphatase activity, the degree of mobility of phosphates in the rhizosphere soil of plants), statistical. Results. It was found that during the growing season, the number of bacteria that hydrolyze minera

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20

Hanke, David E., Paroo N. Parmar, Samuel E. K. Caddick, Porntip Green, and Charles A. Brearley. "Synthesis of inositol phosphate ligands of plant hormone–receptor complexes: pathways of inositol hexakisphosphate turnover." Biochemical Journal 444, no. 3 (2012): 601–9. http://dx.doi.org/10.1042/bj20111811.

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Reduction of phytate is a major goal of plant breeding programs to improve the nutritional quality of crops. Remarkably, except for the storage organs of crops such as barley, maize and soybean, we know little of the stereoisomeric composition of inositol phosphates in plant tissues. To investigate the metabolic origins of higher inositol phosphates in photosynthetic tissues, we have radiolabelled leaf tissue of Solanum tuberosum with myo-[2-3H]inositol, undertaken a detailed analysis of inositol phosphate stereoisomerism and permeabilized mesophyll protoplasts in media containing inositol pho

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Zoirov, Sirojiddin Sakhomiddin o'g'li. "FLUORINATED PHOSPHATES." MULTIDISCIPLINARY JOURNAL OF SCIENCE AND TECHNOLOGY 4, no. 2 (2024): 319–24. https://doi.org/10.5281/zenodo.10700881.

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This abstract provides a concise overview of the topic of fluorinated phosphates, exploring their synthesis, properties, and diverse applications across various fields. Fluorinated phosphates, characterized by the incorporation of fluorine atoms into phosphate compounds, have garnered significant interest due to their unique chemical and physical properties. This abstract summarizes key aspects of the research on fluorinated phosphates, shedding light on their synthesis methodologies, structural characteristics, and applications in areas such as materials science, catalysis, and medicinal chem

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22

Dubinina, Marina N., and Olga S. Bezuglova. "The Impact of a Humic Preparation on the Fractional Composition of Phosphates in Calcic Chernozem." UNIVERSITY NEWS. NORTH-CAUCASIAN REGION. NATURAL SCIENCES SERIES, no. 1 (213) (March 31, 2022): 38–48. http://dx.doi.org/10.18522/1026-2237-2022-1-38-48.

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The results of changes in the fractional composition of phosphorus in Calcic Chernozem under the influence of foliar treatment of winter wheat crops with a humic preparation are presented. Research was carried out in 2017–2020 at the experimental field of Federal Rostov Agricultural Research Center. The treatment of crops was carried out in the phases of tillering and heading. Studies have shown that the treatment of winter wheat crops with a humic preparation helps to reduce all forms of mineral phosphates in the soil, especially phosphates of the first group, the most accessible to plants. H

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23

Pinto, Paola H., Alena Kroupova, Alexander Schleiffer, et al. "ANGEL2 is a member of the CCR4 family of deadenylases with 2′,3′-cyclic phosphatase activity." Science 369, no. 6503 (2020): 524–30. http://dx.doi.org/10.1126/science.aba9763.

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RNA molecules are frequently modified with a terminal 2′,3′-cyclic phosphate group as a result of endonuclease cleavage, exonuclease trimming, or de novo synthesis. During pre-transfer RNA (tRNA) and unconventional messenger RNA (mRNA) splicing, 2′,3′-cyclic phosphates are substrates of the tRNA ligase complex, and their removal is critical for recycling of tRNAs upon ribosome stalling. We identified the predicted deadenylase angel homolog 2 (ANGEL2) as a human phosphatase that converts 2′,3′-cyclic phosphates into 2′,3′-OH nucleotides. We analyzed ANGEL2’s substrate preference, structure, and

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24

Li, Guang Lei, Fei Lu, Su Juan Du, and Jie Zeng. "Optimization of Preparation of Sweet Potato Starch Phosphates of High Paste Stability by Response Surface Methodology." Advanced Materials Research 236-238 (May 2011): 2340–43. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.2340.

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The preparation of sweet potato starch phosphates which possess height stable paste was optimized in this study. A central composite design of response surface methodology involving phosphate (sodium dihydrogen phosphate and disodium hydrogen phosphate) concentration, the ratio of sodium dihydrogen phosphate and disodium hydrogen phosphate, phosphorylation temperature and urea concentration was used, and second-order model for paste stability was employed to generate the response surface. The optimum condition for preparation of sweet potato starch phosphates was as follows: phosphate concentr

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Van Schaftigen, E. "Glucosamine-sensitive and -insensitive detritiation of [2-3H]glucose in isolated rat hepatocytes: a study of the contributions of glucokinase and glucose-6-phosphatase." Biochemical Journal 308, no. 1 (1995): 23–29. http://dx.doi.org/10.1042/bj3080023.

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Glucosamine, a potent inhibitor of glucokinase (hexokinase IV or D), was used to estimate the contribution of this enzyme to glucose phosphorylation in freshly isolated rat hepatocytes and its sensitivity to fructose 6-phosphate in situ. Experiments with radiolabelled glucosamine indicated that this amino sugar, at concentrations of 5 or 40 mM, readily penetrated hepatocytes to reach in 1 min a total (i.e., glucosamine+metabolites) intracellular concentration equal to 0.8-1.2-fold its extracellular concentration. In marked contrast, N-acetylglucosamine barely penetrated the cells. The detritia

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Ali, Ashraf Fahim, and Piercarlo Mustarelli. "Improving the synthesis of alkyl phosphates as sol-gel precursors." Journal of Materials Research 14, no. 2 (1999): 327–29. http://dx.doi.org/10.1557/jmr.1999.0047.

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Alkyl phosphates can be used as sol-gel precursors for phosphate-based glasses and glass-ceramics. An improvement in the synthesis of alkyl phosphates is presented. Following the procedure here described, it is possible to limit the fraction of condensed phosphates to 1–2%. At the same time, a ratio between mono- and di-substituted phosphates near to that given by the reaction stoichiometry may be attained.

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27

Rubiera, C., P. S. Lazo, and S. B. Shears. "Polarized subcellular distribution of the 1-, 4- and 5-phosphatase activities that metabolize inositol 1,4,5-trisphosphate in intestinal epithelial cells." Biochemical Journal 269, no. 2 (1990): 353–58. http://dx.doi.org/10.1042/bj2690353.

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In intestinal epithelial cells, Ins(1,4,5)P3 is metabolized both by an intracellular 5-phosphatase and by less specific extracellular phosphatases [Rubiera, Velasco, Michell, Lazo & Shears (1988) Biochem. J. 255, 131-137]. A total of 91% of intracellular Ins(1,4,5)P3 5-phosphatase was particulate, and was preferentially associated with plasma membranes rather than with other subcellular organelles. A soluble Ins(1,4,5)P3 3-kinase activity was also characterized, further supporting the idea that inositol phosphates are important in enterocyte function. We have studied the distribution of In

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ROCHA JUNIOR, Carlos Magno da, Alexandre de Oliveira TEIXEIRA, Melissa Izabel HANNAS, et al. "Digestibility of phosphorus in powder and microgranular phosphate in diets for pigs." Revista Brasileira de Saúde e Produção Animal 16, no. 3 (2015): 544–57. http://dx.doi.org/10.1590/s1519-99402015000300007.

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AbstractThis study was realized with the objective to determine the apparent and standardized digestibilities of phosphates to pigs in growing phase, employing two methodologies. Forty-two crossbred barrows with an initial weight of 37 ± 1.1kg were used in a randomized-block design in a 2 × 7 factorial arrangement, with two collection methods: total fecal collection and the use of a indicator (acid insoluble ash [AIA]) × seven treatments, which consisted of a control diet (CTR); three diets containing phosphate in powder form (PP): PPA= CTR + powder phosphate A, PPB= CTR + powder phosphate B,

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Sibi, G. "Role of phosphate solubilizing fungi during phosphocompost production and their effect on the growth of tomato (Lycopersicon esculentum L) plants." Journal of Applied and Natural Science 3, no. 2 (2011): 287–90. http://dx.doi.org/10.31018/jans.v3i2.199.

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Experiments were conducted to evaluate the effect of phosphate solubilizing fungi (Aspergillus awamori and Trichoderma viride) in phosphocompost preparation along with low grade rock phosphate. Co-inoculation of phosphate-solubilizing fungi significantly increased the nutrient value of the compost that explores high P-solubilizing potential of A.awamori and T.viride which can be exploited for the solubilization of fixed phosphates thereby enhancing soil fertility and plant growth. Rock phosphate application along with phosphate solubilizing fungi increased 69.2% acid phosphatase and 65% alkali

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30

Suslova, M. Yu, G. V. Podlesnaya, I. V. Tomberg, M. V. Sakirko, and O. I. Belykh. "Alkaline Phosphatase Activity and Phosphatase-Active Bacteria in Lake Baikal Water Column and Major Tributaries." Микробиология 93, no. 2 (2024): 223–27. http://dx.doi.org/10.31857/s0026365624020235.

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Phosphorus is one of the major biogenic elements. Its inflow facilitates eutrophication of lake water. In aquatic ecosystems, phosphorus is present mostly in organic compounds. Ability of aquatic microorganisms to assimilate phosphorus from organophosphorous compounds results from activity of alkaline phosphatases; activity of these enzymes may be an indicator of the state of the ecosystem, phosphate load, and water quality. In the present work, alkaline phosphatase activity (APA) and abundance of phosphatase-active bacteria (PAB) in Lake Baikal pelagic zone and in the mouths of its major trib

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Dwibedi, Debasmita, Ritambhara Gond, Krishnakanth Sada, Baskar Senthilkumar, and Prabeer Barpanda. "Electrocatalytic Activity of Some Cobalt Based Sodium Phosphates in Alkaline Solution." MRS Advances 3, no. 22 (2018): 1215–20. http://dx.doi.org/10.1557/adv.2018.136.

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ABSTRACTThe development of efficient water oxidation catalyst is a major path to realize water splitting systems, which could benefit high performance and cost-effective metal-air batteries, fuel cells and solar energy conversion. To date, the rare crustal abundant platinum group metals rule this sector with Pt-alloys being the best for oxygen reduction reaction (ORR) and ruthenium oxides for oxygen evolution reaction (OER) in acidic solution. However, they show poor stability and are too expensive for large scale applications. Moreover, oxygen reduction in basic solutions can otherwise be cat

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Livermore, Thomas M., Cristina Azevedo, Bernadett Kolozsvari, Miranda S. C. Wilson, and Adolfo Saiardi. "Phosphate, inositol and polyphosphates." Biochemical Society Transactions 44, no. 1 (2016): 253–59. http://dx.doi.org/10.1042/bst20150215.

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Eukaryotic cells have ubiquitously utilized the myo-inositol backbone to generate a diverse array of signalling molecules. This is achieved by arranging phosphate groups around the six-carbon inositol ring. There is virtually no biological process that does not take advantage of the uniquely variable architecture of phosphorylated inositol. In inositol biology, phosphates are able to form three distinct covalent bonds: phosphoester, phosphodiester and phosphoanhydride bonds, with each providing different properties. The phosphoester bond links phosphate groups to the inositol ring, the variabl

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El Bamiki, Radouan, Otmane Raji, Muhammad Ouabid, Abdellatif Elghali, Oussama Khadiri Yazami, and Jean-Louis Bodinier. "Phosphate Rocks: A Review of Sedimentary and Igneous Occurrences in Morocco." Minerals 11, no. 10 (2021): 1137. http://dx.doi.org/10.3390/min11101137.

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Phosphate rocks are a vital resource for world food supply and security. They are the primary raw material for phosphoric acid and fertilizers used in agriculture, and are increasingly considered to be a potential source of rare earth elements. Phosphate rocks occur either as sedimentary deposits or igneous ores associated with alkaline rocks. In both cases, the genesis of high-grade phosphate rocks results from complex concentration mechanisms involving several (bio)geochemical processes. Some of these ore-forming processes remain poorly understood and subject to scientific debate. Morocco ho

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Ren, Yuechang, Yaping Liu, Kexin Jiang, et al. "Effects of Low-Phosphorus Diets Supplemented with Phytase on the Production Performance, Phosphorus-Calcium Metabolism, and Bone Metabolism of Aged Hy-Line Brown Laying Hens." Animals 13, no. 6 (2023): 1042. http://dx.doi.org/10.3390/ani13061042.

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This study was conducted to evaluate the effects of phytase supplementation in low-phosphorus diets on the production performance, phosphorus–calcium metabolism, and bone metabolism in laying hens from 69 to 78 weeks of age. Hy-Line Brown laying hens (n = 1350) were assigned randomly to six treatments with five replicates of 45 birds. A corn–soybean meal-based diet with no inorganic phosphates was formulated to contain 0.12% non-phytate phosphorus (NPP) and 1470 FTU/kg phytase (Released phytate phosphorus content ≥ 0.1%). Inorganic phosphorus (dicalcium phosphate) was supplemented into the bas

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R. Saikia and L.R. Saikia. "Effect of pH and salinity on mineral phosphate solubilization by bacterial strains isolated from the rhizosphere of Lablab purpureus (L.) Sweet." Ecology, Environment and Conservation 30, Suppl. (2024): S95—S100. https://doi.org/10.53550/eec.2024.v30i07s.018.

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Phosphate Solubilizing Bacteria (PSB) solubilizes insoluble phosphates. Two strains of PSB, 2b3 and 2b5 were isolated from Lablab purpureus (L.) Sweet rhizosphere soil based on the formation of halozone in Pikovskaya agar plates. Phosphate solubilization in Pikovskaya broth containing either aluminium, ferric or tricalcium phosphates in different pH conditions was estimated. Both the strains were subjected to salinity stress. Morphology and biochemical characters of the bacterial isolates were studied and identified by 16s rRNA gene sequencing. The two bacterial strains 2b3 and 2b5 were identi

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Hemming, Frank W. "Dolichol: a curriculum cognitionis." Biochemistry and Cell Biology 70, no. 6 (1992): 377–81. http://dx.doi.org/10.1139/o92-058.

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Dolichols were first described about 30 years ago when animal tissues were being examined for the presence of a putative precursor to the polyisoprenoid side chain of ubiquinone. These long-chain 2,3-dihydro-polycis-isoprenoid alcohols are found in all eukaryotic organisms. In many plant tissues they are accompanied by families of other polyisoprenoid alcohols that are usually similar molecules and possess an unsaturated α-isoprene residue. Analogy with the role of bactoprenyl phosphates in the synthesis of bacterial wall glycans led to the discovery that the mono- and di-phosphates of dolicho

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Joseph, S. K., T. Esch, and W. D. Bonner. "Hydrolysis of inositol phosphates by plant cell extracts." Biochemical Journal 264, no. 3 (1989): 851–56. http://dx.doi.org/10.1042/bj2640851.

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A gel-filtered soluble fraction prepared from suspension-cultured Nicotiana tabacum cells hydrolysed inositol mono-, bis- and tris-phosphates. At a concentration of 7.5 microM the rates of hydrolysis followed the sequence Ins(1,4,5)P3 greater than Ins(1,4)P2 greater than Ins(4)P congruent to Ins(1)P. The major products of Ins(1,4,5)P3 hydrolysis identified by h.p.l.c. were Ins(1,4)P2 and Ins(4,5)P2. Ins(1,4)P2 was hydrolysed exclusively to Ins(4)P. The inclusion of Ca2+ in the incubation buffer markedly stimulated the hydrolysis of all the inositol phosphate substrates. Under identical conditi

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Ferreira, André Sampaio, Danilo Pinceli Chaves, Adilson De Oliveira Júnior, and Claudemir Zucareli. "Phosphate solubilizing rhizobacteria inoculation to increase rock phosphates efficiency and improve maize growth." DELOS: DESARROLLO LOCAL SOSTENIBLE 16, no. 44 (2023): 1288–304. http://dx.doi.org/10.55905/rdelosv16.n44-018.

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Rock phosphates are less soluble and agronomically not as efficient as the acidulated. However, some rhizobacteria can improve the solubilization of inorganic phosphates in the soil, raising the efficiency of the rock phosphates. The objective was to evaluate the development of maize plants in response to the application of soluble and rock P sources associated with rhizobacteria inoculation. A greenhouse experiment was carried out with six P sources: no P application; Triple Superphosphate (TSPh); Gafsa rock phosphate (reactive); Itafós rock phosphate (non-reactive); TSPh + Gafsa; and TSPh

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Klöck, Gerd, and Karlheinz Kreuzberg. "Sn-Glycerol-3-phosphate is a Product of Starch Degradation in Isolated Chloroplasts from Chlamydomonas reinhardii." Zeitschrift für Naturforschung C 42, no. 5 (1987): 567–69. http://dx.doi.org/10.1515/znc-1987-0512.

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Abstract Sn-glycerol-3-phosphate Sn-glycerol-3-phosphate accumulates during starch catabolism by intact isolated chloroplasts from Chlamydomonas reinhardii in the dark. Further products detected mainly were 3-phospho-glyceric acid and triose phosphates with a ratio between 3-phosphoglyceric acid, sn-glycerol-3-phosphate and triose phosphates of 1.0:0.9:0.2. The production of sn-glycerol-3-phosphate by a plastidic glycerol-3-phosphate dehydrogenase provides a reasonable mechanism for regenerating reducing equivalents during continuous starch breakdown in the chloroplast of the alga C. reinhardi

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WAGNER, M. K. "Phosphates as Antibotulinal Agents in Cured Meats: A Review." Journal of Food Protection 49, no. 6 (1986): 482–87. http://dx.doi.org/10.4315/0362-028x-49.6.482.

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Phosphates have been suggested as potential substitutes for the currently used nitrite in cured meat products, yet relatively little research has been done on the antibotulinal effects of phosphates. Phosphate selection for use in the cured meat industry continues to be based upon achieving certain functional objectives rather than microbiological control (i.e., improved tenderness, moisture retention, reduced shrinking during cooking, pH adjustments, emulsification, sequestration of ions). Current federal regulations limit addition of phosphates to amounts needed to achieve functionality. One

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Tian, Tian, Xin-Yi Chu, Yi Yang, et al. "Phosphates as Energy Sources to Expand Metabolic Networks." Life 9, no. 2 (2019): 43. http://dx.doi.org/10.3390/life9020043.

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Phosphates are essential for modern metabolisms. A recent study reported a phosphate-free metabolic network and suggested that thioesters, rather than phosphates, could alleviate thermodynamic bottlenecks of network expansion. As a result, it was considered that a phosphorus-independent metabolism could exist before the phosphate-based genetic coding system. To explore the origin of phosphorus-dependent metabolism, the present study constructs a protometabolic network that contains phosphates prebiotically available using computational systems biology approaches. It is found that some primitiv

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Schmidt, Susanne, and Friedrich Hammerschmidt. "Phosphate-Phosphonate Rearrangement of Aliphatic Phosphates." Phosphorus, Sulfur, and Silicon and the Related Elements 147, no. 1 (1999): 377. http://dx.doi.org/10.1080/10426509908053668.

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Hausrath, E. M., C. T. Adcock, J. A. Berger, et al. "Phosphates on Mars and Their Importance as Igneous, Aqueous, and Astrobiological Indicators." Minerals 14, no. 6 (2024): 591. http://dx.doi.org/10.3390/min14060591.

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This paper reviews the phosphate phases in meteorites and those measured by landed spacecraft, what they reveal about past igneous and aqueous conditions on Mars, and important implications for potential prebiotic chemistry, past habitability, and potential biosignatures that could be detected in samples returned from Mars. A review of the 378 martian meteorites as of 2023 indicate that of the two most common phosphate minerals in Mars meteorites, merrillite and apatites, the apatite composition is largely F- and Cl-rich, with shergottites containing more OH. The phosphate concentrations exami

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Lopez, Diego A., and Hans H. Stein. "PSVI-8 Mineral composition of feed grade monocalcium phosphate." Journal of Animal Science 98, Supplement_3 (2020): 200–201. http://dx.doi.org/10.1093/jas/skaa054.348.

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Abstract Feed phosphates are included in swine diets to meet the requirements of P. Two products are predominantly used for this purpose, commercial monocalcium phosphate (MCP) and dicalcium phosphate (DCP). Theoretically, pure MCP should contain 26.5% P but commercial sources of MCP contain around 21 % P. The reason there is less P in commercial sources is that these sources are contaminated with calcium carbonate and other minerals. In addition, feed grade phosphates called MCP in reality is a mixture of MCP and DCP, which also contributes to the reduced P. To determine the complete composit

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Diaz-Moralli, Santiago, Antonio Ramos-Montoya, Silvia Marin, Ana Fernandez-Alvarez, Marta Casado, and Marta Cascante. "Target metabolomics revealed complementary roles of hexose- and pentose-phosphates in the regulation of carbohydrate-dependent gene expression." American Journal of Physiology-Endocrinology and Metabolism 303, no. 2 (2012): E234—E242. http://dx.doi.org/10.1152/ajpendo.00675.2011.

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Carbohydrate response element-binding protein (ChREBP) is a transcription factor that mediates glucose signaling in mammalian liver, leading to the expression of different glycolytic and lipogenic genes, such as pyruvate kinase (L-PK) and fatty acid synthase (FAS). The current model for ChREBP activation in response to sugar phosphates holds that glucose metabolization to xylulose 5-phosphate (X-5- P) triggers the activation of protein phosphatase 2A, which dephosphorylates ChREBP and leads to its nuclear translocation and activation. However, evidence indicates that glucose 6-phosphate (G-6-

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Kluger, Ronald. "CIC Medal Award Lecture — Molecular keystones: Lessons from bioorganic reaction mechanisms." Canadian Journal of Chemistry 84, no. 9 (2006): 1093–105. http://dx.doi.org/10.1139/v06-149.

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The work of the author is reviewed in terms of "keystone molecules" that serve as figurative points of support to understand the interactions of smaller molecules within biological macromolecules. The review emphasizes lessons learned in carboxylation of biotin, reactions of cyclic phosphates, the uses of acyl phosphate monoesters, and the mechanism of decarboxylation of thiamin-derived intermediates.Key words: CIC medal, biotin, ATP, mechanisms, cyclic phosphates, thiamin, acyl phosphates, catalysis.

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Wang, Tong, Yan Sun, Hong Huang, et al. "The Effect of Selected Phosphate-Solubilizing Bacteria on the Growth of Cotton Plants in Salinized Farmlands." Microorganisms 13, no. 5 (2025): 1075. https://doi.org/10.3390/microorganisms13051075.

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The utilization rate of phosphorus fertilizer is low in Xinjiang, China, due to the fact that phosphorus is easily fixed by the widely distributed lime soil, leading to the limited contribution of phosphorus fertilizer to crop yield and a decline in crop quality. Phosphate-soluble bacteria can convert insoluble phosphates in the soil into soluble phosphates, playing an important role in soil phosphorus circulation and plant growth. In this study, two bacteria with strong phosphate-solubilizing ability, Enterobacter hormaechei (P1) and Bacillus atrophaeus (P2), were selected from severely salin

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Franczak, Priscila Ferraz, Nelson Heriberto Almeida Camargo, Pricyla Corrêa, and Enori Gemelli. "Synthesis and Characterization of Hydrated Calcium Phosphate: Precursors for Obtaining Biocements." Materials Science Forum 798-799 (June 2014): 443–48. http://dx.doi.org/10.4028/www.scientific.net/msf.798-799.443.

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Calcium phosphates biocements are biomaterials that present crystallographic and mineralogical characteristics similar to human skeletal structure. This has led to the development of new calcium phosphates biomaterials for biomedical applications, especially biomaterials for repairing defects and bone reconstruction. Calcium phosphates biocements are a promising alternative in biomedical applications, for they are easy to mold, they have good wettability, hydration and hardening capacity during its application in biological means. This work aimed at the synthesis of hydrated calcium phosphates

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Valsami-Jones, E. "Mineralogical controls on phosphorus recovery from wastewaters." Mineralogical Magazine 65, no. 5 (2001): 611–20. http://dx.doi.org/10.1180/002646101317018433.

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AbstractThe removal of phosphorus from wastewaters is becoming very common, to meet water quality targets, and avoid environmental problems related to eutrophication. At the same time, agricultural application of P-rich sewage biosolids is diminishing for reasons of logistics and of public pressure. As a result P from wastewaters is ultimately disposed of in landfills. Over the long term, phosphate ore reserves will become depleted. Recycling of P from wastewaters may thus be a realistic prospect if scientific and technical issues can be resolved. At the centre of the scientific problems lie c

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Lapeyrie, F., J. Ranger, and D. Vairelles. "Phosphate-solubilizing activity of ectomycorrhizal fungi in vitro." Canadian Journal of Botany 69, no. 2 (1991): 342–46. http://dx.doi.org/10.1139/b91-046.

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An easy to use method is presented here to compare and study the mineral phosphate-solubilizing activity of ectomycorrhizal fungi. This technique can discriminate between strains with differing phosphate-solubilizing activities. Synthetic mineral phosphates, crystalline or amorphous, were differentially solubilized by 10 ectomycorrhizal fungi. Natural crystalline phosphates studied do not seem to be solubilized by fungi under similar experimental conditions. Paxillus involutus 1 appears to be able to solubilize calcium phosphates using either ammonium or nitrate nitrogen, but the other isolate

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