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Journal articles on the topic 'Integrin with metal ions'

Author: Grafiati

Published: 6 September 2023

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1

Powell, J. J., R. Jugdaohsingh, and R. P. H. Thompson. "The regulation of mineral absorption in the gastrointestinal tract." Proceedings of the Nutrition Society 58, no. 1 (1999): 147–53. http://dx.doi.org/10.1079/pns19990020.

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The absorption of metal ions in the mammalian single-stomached gut is fortunately highly selective, and both luminal and tissue regulation occur. Initially, assimilation of metal ions in an available form is facilitated by the intestinal secretions, chiefly soluble mucus (mucin) that retards hydrolysis of ions such as Cu, Fe and Zn. Metal ions then bind and traverse the mucosally-adherent mucus layer with an efficiency M+> M2+> M3+. At the mucosa Fe3+is probably uniquely reduced to Fe2+, and all divalent cations (including Fe2+) are transported by a membrane protein (such as divalent cat

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2

Huang, Hao, Joel N. Bogstie, and Hans J. Vogel. "Biophysical and structural studies of the human calcium- and integrin-binding protein family: understanding their functional similarities and differences." Biochemistry and Cell Biology 90, no. 5 (2012): 646–56. http://dx.doi.org/10.1139/o2012-021.

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The human calcium- and integrin-binding protein 1 (CIB1) plays important roles in various cellular functions. In this study, three other members of this protein family (CIB2–4: CIB2, CIB3, and CIB4) were purified and subsequently characterized using biophysical and structural approaches. As expected from sequence alignments, CIB2–4 were shown to bind calcium (Ca2+) and magnesium (Mg2+) ions. Binding of Ca2+ or Mg2+ ions changes the secondary structure of CIB2–4 and the exposure of hydrophobic surface area. Ca2+ and Mg2+ ions also stabilize the tertiary structures for CIB2 and CIB3. Through in

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3

Schumacher, Stephanie, Dirk Dedden, Roberto Vazquez Nunez та ін. "Structural insights into integrin α5β1 opening by fibronectin ligand". Science Advances 7, № 19 (2021): eabe9716. http://dx.doi.org/10.1126/sciadv.abe9716.

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Integrin α5β1 is a major fibronectin receptor critical for cell migration. Upon complex formation, fibronectin and α5β1 undergo conformational changes. While this is key for cell-tissue connections, its mechanism is unknown. Here, we report cryo–electron microscopy structures of native human α5β1 with fibronectin to 3.1-angstrom resolution, and in its resting state to 4.6-angstrom resolution. The α5β1-fibronectin complex revealed simultaneous interactions at the arginine-glycine-aspartate loop, the synergy site, and a newly identified binding site proximal to adjacent to metal ion–dependent ad

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4

Ajroud, Kaouther, Takashi Sugimori, Wolfgang H. Goldmann, Dahmani M. Fathallah, Jian-Ping Xiong, and M. Amin Arnaout. "Binding Affinity of Metal Ions to the CD11b A-domain Is Regulated by Integrin Activation and Ligands." Journal of Biological Chemistry 279, no. 24 (2004): 25483–88. http://dx.doi.org/10.1074/jbc.m402901200.

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Michalska, Agnieszka, Sebastian Golczak, Krzysztof Langer, and Jerzy Langer. "Micro- and Nanostructured Polyaniline for Instant Identification of Metal Ions in Solution." Nanomaterials 9, no. 2 (2019): 231. http://dx.doi.org/10.3390/nano9020231.

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The unique properties of nanomaterials enable the creation new analytical devices. Polyaniline (PANI) micro- and nanofiber network, freestanding in the gap between two gold microelectrodes, has been used in a new nanodetector for metal ions in solutions. The gold electrodes were modified with the aid of alkanethiols, forming a self-assembled monolayer (SAM), which is able to block the ion current flow, but also to interact with metal ions when specific functional molecules are incorporated into the layer. The electric field of the trapped metal ions induces change of the electrical conductivit

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Shamanin V.I. and Tarbokov V.A. "Multicharged metal ions generation in a self-magnetically insulated ion diode." Technical Physics Letters 49, no. 5 (2023): 63. http://dx.doi.org/10.21883/tpl.2023.05.56032.19507.

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A self-magnetically insulated ion diode was used to produce a pulsed beam of metallic ions from explosion emission plasma. The ratio of integral transferred charge for the Al, Ti and Mo ions amounted to at least 63% to the total beam charge. The ion diode had design features, which consisted in a bladed cathode and a removable perforated anode overlay made of VT-8 alloy. Analysis of the charge to mass characteristics of beam ions and the ion current density waveforms by the time of flight methodic with use of a Faraday cup showed the content of aluminum and titanium ions in the third to fourth

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Kavitha, Govindarajan, Parasuraman Vijaya Rohini, and Sunkubangaru Sudarsan Alwar. "Potentiometric Studies of Binary Complexes of Transition Metal Ions with Lauric Acid." Oriental Journal of Chemistry 34, no. 5 (2018): 2681–84. http://dx.doi.org/10.13005/ojc/340564.

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The potentials of binary complexes of the Lauric acid ligand with various biologically vital divalent metal ions such as Mn(II), Co(II), Ni(II), Cu(II)and Zn(II) have been studied in 50% DMSO-water mixture at constant ionic strength by Bjerrum method. Hydrogen ion concentrations were measured and the formation of binary complexes was inferred from the corresponding potentiometric pH-titration curves. The metal to ligand mole ratio was maintained at 1:5 to facilitate the maximum number of ligands to the metal ion. The dissociation constant has been determined by the half-integral method and poi

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Gupta, Neelmani, Murari Prasad, Nidhi Singhal, and Vineet Kumar. "Modeling the Adsorption Kinetics of Divalent Metal Ions onto Pyrophyllite Using the Integral Method." Industrial & Engineering Chemistry Research 48, no. 4 (2009): 2125–28. http://dx.doi.org/10.1021/ie800975m.

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9

Singhal, Nidhi, Murari Prasad, Neelmani Gupta, and Vineet Kumar. "Modeling the sorption kinetics of divalent metal ions onto mineral adsorbent using integral method." Journal of Colloid and Interface Science 313, no. 2 (2007): 423–27. http://dx.doi.org/10.1016/j.jcis.2007.04.068.

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10

Kolmas, Joanna, Ewa Groszyk, and Dagmara Kwiatkowska-Różycka. "Substituted Hydroxyapatites with Antibacterial Properties." BioMed Research International 2014 (2014): 1–15. http://dx.doi.org/10.1155/2014/178123.

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Reconstructive surgery is presently struggling with the problem of infections located within implantation biomaterials. Of course, the best antibacterial protection is antibiotic therapy. However, oral antibiotic therapy is sometimes ineffective, while administering an antibiotic at the location of infection is often associated with an unfavourable ratio of dosage efficiency and toxic effect. Thus, the present study aims to find a new factor which may improve antibacterial activity while also presenting low toxicity to the human cells. Such factors are usually implemented along with the implan

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11

Murcia, Marta, Marketa Jirouskova, Jihong Li, Barry S. Coller та Filizola Marta. "Equilibrium and Non-Equilibrium Molecular Dynamics Simulations Provide Potential Mechanisms for the Loss of Ligand Binding to αIIbβ3 Mutants Affecting the Ligand-Induced Metal Binding Site (LIMBS)." Blood 108, № 11 (2006): 1805. http://dx.doi.org/10.1182/blood.v108.11.1805.1805.

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Abstract Although the role of the β3 MIDAS metal ion in ligand binding to αIIbβ3 is well established, serving as the site of interaction of the ligand Asp residue, the role of the nearby LIMBS metal ion is less well defined. Previous studies suggested a role for the LIMBS in ligand binding. We confirmed this by showing that HEK293 cells expressing normal αIIbβ3 adhered to both immobilized fibrinogen and the RGD-containing venom echistatin in the presence of either Mg++/Ca++ or Mn++, whereas two different αIIbβ3 LIMBS mutants (β3 N215A and D217A) failed to adhere to either protein. In addition,

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Athanasellis, Giorgos, Georgia Zahariou, Stefanos Kikionis, Olga Igglessi-Markopoulou, and John Markopoulos. "Coordination Behavior of 3-Ethoxycarbonyltetronic Acid towards Cu(II) and Co(II) Metal Ions." Bioinorganic Chemistry and Applications 2008 (2008): 1–6. http://dx.doi.org/10.1155/2008/547915.

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Tetronic acids, 4-hydroxy-5H-furan-2-ones, constitute a class of heterocyclic compounds with potent biological and pharmacological activity. Theβ,β′-tricarbonyl moiety plays an integral role in biological systems and forms a variety of metal complexes. In this report, we present the complexation reactions of 3-ethoxycarbonyl tetronic acids with acetates and chlorides of Cu(II) and Co(II). These complexes have been studied by means of EPR spectroscopy and magnetic susceptibility measurements. From the obtained results, a preliminary complexation mode of the ligand is proposed.

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Linsdell, Paul. "Metal bridges to probe membrane ion channel structure and function." Biomolecular Concepts 6, no. 3 (2015): 191–203. http://dx.doi.org/10.1515/bmc-2015-0013.

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AbstractIon channels are integral membrane proteins that undergo important conformational changes as they open and close to control transmembrane flux of different ions. The molecular underpinnings of these dynamic conformational rearrangements are difficult to ascertain using current structural methods. Several functional approaches have been used to understand two- and three-dimensional dynamic structures of ion channels, based on the reactivity of the cysteine side-chain. Two-dimensional structural rearrangements, such as changes in the accessibility of different parts of the channel protei

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14

Jin, Tao, and Rong Chang Zeng. "Structure and Infrared Radiation Properties of Metal Oxides-Doped Cordierites Using Graded Sintering Synthesis." Advanced Materials Research 311-313 (August 2011): 140–44. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.140.

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The infrared radiation materials of transition metal oxides doped cordierite systems are synthesized using graded solid phase sintering. And the infrared radiation properties are investigated by means of X-ray diffraction, infrared spectrometry and scanning electron microscope. The results show that new compounds are developed during graded heat treatment from 900 °C to 1250 °C. The spinel phases produced are the main crystal material, and the different doped ions and impurity carbon cause the new phases, to different degree defect in this system ,which types can be classified into: (Mg,Zn,□)F

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15

Fedenko, Volodymyr S., Marco Landi, and Sergiy A. Shemet. "Metallophenolomics: A Novel Integrated Approach to Study Complexation of Plant Phenolics with Metal/Metalloid Ions." International Journal of Molecular Sciences 23, no. 19 (2022): 11370. http://dx.doi.org/10.3390/ijms231911370.

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Plant adaptive strategies have been shaped during evolutionary development in the constant interaction with a plethora of environmental factors, including the presence of metals/metalloids in the environment. Among adaptive reactions against either the excess of trace elements or toxic doses of non-essential elements, their complexation with molecular endogenous ligands, including phenolics, has received increasing attention. Currently, the complexation of phenolics with metal(loid)s is a topic of intensive studies in different scientific fields. In spite of the numerous studies on their chela

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Kurant, V. Z., та V. O. Khomenchuk. "ВПЛИВ ІОНІВ МАНГАНУ, ЦИНКУ, КУПРУМУ ТА ПЛЮМБУМУ НА ВМІСТ ВІЛЬНИХ АМІНОКИСЛОТ В ОРГАНІЗМІ КОРОПА". Scientific Issue Ternopil Volodymyr Hnatiuk National Pedagogical University. Series: Biology 75, № 1 (2019): 28–42. http://dx.doi.org/10.25128/2078-2357.19.1.4.

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The influence of ions of Manganese, Zinc, Copper and Lead in two concentrations, which corresponded to 2 and 5 MPC, on the content of free amino acids in the carp organism was studied. It is shown, that free amino acids are compounds, that are actively used in the energy supply of fish organisms. Their metabolism is one of the factors, that provides biochemical adaptation of fish to the changes of the conditions in the aquatic environment. The leading role in this process in carp organism have glycine, the content of which in the muscles of the control fish is quite high. It exceeds all other

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17

Knöpfel, Martin, Georg Schulthess, Felix Funk, and Helmut Hauser. "Characterization of an Integral Protein of the Brush Border Membrane Mediating the Transport of Divalent Metal Ions." Biophysical Journal 79, no. 2 (2000): 874–84. http://dx.doi.org/10.1016/s0006-3495(00)76343-0.

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18

Mollaamin, Fatemeh, and Majid Monajjemi. "Application of DFT/TD-DFT Frameworks in the Drug Delivery Mechanism: Investigation of Chelated Bisphosphonate with Transition Metal Cations in Bone Treatment." Chemistry 5, no. 1 (2023): 365–80. http://dx.doi.org/10.3390/chemistry5010027.

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Carbon nanotubes (CNTs) are applied in a drug delivery system, which can be reacted with different structures such biomolecules. Bones have vital functions and are the locations of biochemical reactions in cells that might be exposed various diseases. As different metal ions are integral components of bone tissue with different functions in the physiological cellular medium as well as in bone treatment, they can be used differently as a basis or as a supplement for various materials in the field of bone repair. Therefore, this research aims to represent the recent progress in conjugated bispho

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Zhu, Jieqing, Won-Seok Choi, Joshua G. McCoy та ін. "Structure-Guided Design of A Novel High Affinity Integrin αIIbβ3 Receptor Antagonist (RUC-2) That Displaces Mg2+ From the β3 MIDAS",. Blood 118, № 21 (2011): 3255. http://dx.doi.org/10.1182/blood.v118.21.3255.3255.

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Abstract Abstract 3255 The platelet αIIbβ3 integrin receptor plays a central role in hemostasis and thrombosis. Small molecule inhibitors of αIIbβ3 based on the RGD cell recognition sequence block ligand binding by interacting with αIIb D224 via their positively-charged (R-like) group and coordinating the Mg2+ ion in the metal ion adhesion site (MIDAS) via their carboxyl (D-like) group. We recently reported a novel inhibitor of αIIbβ3 (RUC-1) that binds exclusively to αIIb and we now report the structure-based design and synthesis of RUC-2 [2-amino-N-(3-(5-oxo-7-(piperazin-1-yl)-5H-[1,3,4]thia

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DiScipio, Richard G., Pamela J. Daffern, Ingrid U. Schraufstätter та Pragda Sriramarao. "Human Polymorphonuclear Leukocytes Adhere to Complement Factor H Through an Interaction That Involves αMβ2 (CD11b/CD18)". Journal of Immunology 160, № 8 (1998): 4057–66. http://dx.doi.org/10.4049/jimmunol.160.8.4057.

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Abstract The work presented here demonstrates that human complement factor H is an adhesion ligand for human neutrophils but not for eosinophils. The adherence of polymorphonuclear leukocytes (PMNs) to plastic wells coated with factor H depended on divalent metal ions and was augmented by C5a and TNF-α. PMN adhesion to factor H in the presence or absence of C5a was blocked specifically by mAbs against CD11b or CD18. Affinity purification using factor H Sepharose followed by immunoprecipitation using mAbs to various integrin chains identified Mac-1 (CD11b/CD18) as a factor H binding receptor. T

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Gabidulina, Marina K., Sergey Yu Doronin, and Irina V. Kosyreva. "Test means for separate and total determination of heavy metals in aqueous media." Butlerov Communications 57, no. 1 (2019): 101–14. http://dx.doi.org/10.37952/roi-jbc-01/19-57-1-101.

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The classification of the main indicators of the quality of water bodies is considered. The data on controlled chemical indicators are given (content of dissolved oxygen, suspended solids, phenols, petroleum products, etc.) A list of priority hydrochemical water pollutants and the sources of their pollution are presented. The expediency of determining both individual ions of heavy metals (HM) and their complex (integral) indicators is shown by the example of the sum of HMs. The authors summarized existing data on contemporary test methods used for detection and quantitative measurement of the

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Gun'ko, V. M. "Quantum-chemically computed integral characteristics of complex nanomaterials." Himia, Fizika ta Tehnologia Poverhni 12, no. 3 (2021): 157–67. http://dx.doi.org/10.15407/hftp12.03.157.

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Development of theoretical tools to analyze electronic structure of complex nanomaterials depending on features of spatial and chemical organizations of different phases is of interest from both practical and theoretical points of view. Therefore, in this work, an approach based on computations of the atomic charge distribution functions (CDF) in parallel to calculations of the distribution functions of the chemical shifts (SDF) of protons is developed to be applied to a set of complex oxide and carbon nanomaterials. Binary nanooxides (alumina/silica, titania/silica), 3d-metal-doped anatase, a

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Forni, Alessandra, Elena Cariati, Lucia Carlucci, et al. "Interpreting the different emissive properties of cyclic triimidazole-based Cu^I and Ag^I coordination polymers: a QTAIM and IQA study." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 77, no. 6 (2021): 865–70. http://dx.doi.org/10.1107/s2052520621009707.

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A QTAIM and IQA investigation on model compounds of two isostructural AgI and CuI coordination polymers (CPs) based on cyclic triimidazole (L), i.e. the [MIL] n 1D double-stranded stair chain and the [MClL] n 3D network (M = Cu, Ag), has allowed light to be shed on the different emissive behaviour associated with the two metal ions. According to a previously reported investigation [Malpicci et al. (2021). Inorg. Chem. Front. 8, 1312–1323], AgI CPs showed both fluorescence and multiple ligand-centred room-temperature phosphorescences, whereas CuI CPs displayed non-thermally equilibrated halogen

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Daniszewski, Piotr. "Heavy Metals in the Waters of Dąbie Lake (West-Pomeranian Voievodship, North-West Poland)." International Letters of Chemistry, Physics and Astronomy 17 (September 2013): 72–81. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.17.72.

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Heavy metal pollution is an ever increasing problem of our lakes. These toxic heavy metals entering in aquatic environment are adsorbed onto particulate matter, although they can form free metal ions and soluble complexes that are available for uptake by biological organisms. The increase in residue levels of heavy metal content in water, sediments and biota has resulted in decreased productivity and increase in exposure of humans to harmful substances. Many of these metals tend to remain in the ecosystem and eventually move from one compartment to the other within the food chain. Food chain c

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Daniszewski, Piotr. "Heavy Metals in the Waters of Dąbie Lake (West-Pomeranian Voievodship, North-West Poland)." International Letters of Chemistry, Physics and Astronomy 17 (September 7, 2013): 72–81. http://dx.doi.org/10.56431/p-7ejl06.

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Heavy metal pollution is an ever increasing problem of our lakes. These toxic heavy metals entering in aquatic environment are adsorbed onto particulate matter, although they can form free metal ions and soluble complexes that are available for uptake by biological organisms. The increase in residue levels of heavy metal content in water, sediments and biota has resulted in decreased productivity and increase in exposure of humans to harmful substances. Many of these metals tend to remain in the ecosystem and eventually move from one compartment to the other within the food chain. Food chain c

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Vlasov, Andrey I., Vladimir P. Zhalnin, Alexander A. Rasuk, and Oleg V. Kosyanov. "Composite Nanomaterials for Implementation of Promising Memristive Structures." Key Engineering Materials 910 (February 15, 2022): 703–12. http://dx.doi.org/10.4028/p-72a77f.

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The paper considers principles of creating promising memristive structures based on composite oxides with agglomerates of nanoparticles. The proposed functional nanomaterial is promising for the formation of a composite structure of a memristor, consisting of two electrodes based on one or more nanoscale layers of metal oxides, which are separated by an active medium so that an insulating layer is applied between the electrodes at the periphery of the active medium region. A conductive layer is formed on top of the insulating layer, which is connected to the negative rail, which prevents leaka

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Affandi, Trisiani, and Megan M. McEvoy. "Mechanism of metal ion-induced activation of a two-component sensor kinase." Biochemical Journal 476, no. 1 (2019): 115–35. http://dx.doi.org/10.1042/bcj20180577.

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Abstract Two-component systems (TCSs) are essential for bacteria to sense, respond, and adapt to changing environments, such as elevation of Cu(I)/Ag(I) ions in the periplasm. In Escherichia coli, the CusS–CusR TCS up-regulates the cusCFBA genes under increased periplasmic Cu(I)/Ag(I) concentrations to help maintain metal ion homeostasis. The CusS histidine kinase is a homodimeric integral membrane protein that binds to periplasmic Cu(I)/Ag(I) and transduces a signal to its cytoplasmic kinase domain. However, the mechanism of how metal binding in the periplasm activates autophosphorylation in

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Cotty, Stephen Richard, and Xiao Su. "Electrochemical Recovery and Concentration of Noble Metals." ECS Meeting Abstracts MA2022-02, no. 27 (2022): 1042. http://dx.doi.org/10.1149/ma2022-02271042mtgabs.

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Noble metals are integral materials to chemical and electronics industries for their unmatched chemical inertness, electrical conductivity, and catalytic activity. However, the growing demand for noble metals such as Pt, Pd, and Au is outpacing the dwindling supply, and without new recycle strategies these critical noble metal resources will run out. Therefore, energy and resource efficient noble metal recycling technologies are critical to develop sustainable use of these scarce and valuable resources. Recently, electrification of chemical process units has been receiving justifiable attentio

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Karami, Zohre, Seyed Mohammad Reza Paran, Poornima Vijayan P., et al. "A Comparative Study on Cure Kinetics of Layered Double Hydroxide (LDH)/Epoxy Nanocomposites." Journal of Composites Science 4, no. 3 (2020): 111. http://dx.doi.org/10.3390/jcs4030111.

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Layered double hydroxide (LDH) minerals are promising candidates for developing polymer nanocomposites and the exchange of intercalating anions and metal ions in the LDH structure considerably affects their ultimate properties. Despite the fact that the synthesis of various kinds of LDHs has been the subject of numerous studies, the cure kinetics of LDH-based thermoset polymer composites has rarely been investigated. Herein, binary and ternary structures, including [Mg0.75 Al0.25 (OH)2]0.25+ [(CO32−)0.25/2∙m H2O]0.25−, [Mg0.75 Al0.25 (OH)2]0.25+ [(NO3−)0.25∙m H2O]0.25− and [Mg0.64 Zn0.11 Al0.2

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Zaitsev, M. G., V. A. Arlyapov, V. A. Alferov, O. N. Ponamoreva, and A. N. Reshetilov. "A Biosensor for Express Assessment of Integral Toxicity of Polymer- and Textile-Based Products." Biotekhnologiya 37, no. 6 (2021): 119–28. http://dx.doi.org/10.21519/0234-2758-2021-37-6-119-128.

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Biosensors to assess integral toxicity, which consist of an oxygen electrode and immobilized bacteria (Gluconobacter оxydans B-1280 and Escherichia coli К802) or yeast (Saccharomyces cerevisiae Y-1173) have been designed. Model toxic pollutants (phenol, n-nitrophenol, formaldehyde and heavy metal ions Pb2+, Cu2+, Hg2+ and Cr2O72) were chosen to estimate the concentration, at which 50% inhibition of glucose oxidation (ЕC50) was observed. It was shown that a biosensor based on G. оxydans cells provides the most sensitive detection of toxic pollutants, exhibits long operational stability (36 days

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ČUPERLOVIĆ-CULF, MIROSLAVA. "THE IMPORTANCE OF INHIBITORS FOR THE SIMULATION OF METABOLIC PROCESSES: IN SILICOZn2+ INHIBITION OF m-ACONITASE FROM ANALYSIS OF GLYCOLYSIS AND KREBS CYCLE KINETIC MODELS." Journal of Bioinformatics and Computational Biology 08, no. 04 (2010): 703–15. http://dx.doi.org/10.1142/s0219720010004872.

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Metal ions have a major effect on the metabolic processes in cells either as inhibitors or as integral components of enzymes. The inhibition of enzymes can take place either through the inhibition of gene expression or through inhibition of protein function. A particularly interesting example of the effect of a metal ion on metabolism is the observed inhibition of Krebs cycle and alteration of energy metabolism by zinc (II) cations. In this particular case metal ion inhibition of enzyme is linked to one of the major functions of prostate cells of accumulation and excretion of citrate. Experime

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Diamant, Viktor, Volodymyr Trachevskii, Katherine Pershina, et al. "Specialties of the structure and conductivity of the non-aqueous electrolytes based on alkali metal bis (salicyl) borates and bis (oxalate) borates." Ukrainian Chemistry Journal 85, no. 3 (2019): 49–55. http://dx.doi.org/10.33609/0041-6045.85.3.2019.49-55.

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The structure and coordination environment of non-aqueous electrolytes based on bis(salicyl)borates of lithium, sodium, potassium, tetramethylammonium (MeBSB) and bis(oxalato)borates from lithium to cesium (MeBOB) using NMR spectroscopy have been investigated. Bis(salicyl)borates (BSB) and bis(oxalate)borates (BOB) of alkali metals and organic cations are considered as promising electroconductive components of electrolytes of modern chemical sources of current (lithium, sodium ion batteries and super-capacitors). The salts were synthesized by the microwave radiation method. The 13C and 11B NMR

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Diamant, Viktor, Volodymyr Trachevskii, Katherine Pershina, et al. "Specialties of the structure and conductivity of the non-aqueous electrolytes based on alkali metal bis (salicyl) borates and bis (oxalate) borates." Ukrainian Chemistry Journal 85, no. 3 (2019): 49–55. http://dx.doi.org/10.33609/6045.85.3.2019.49-55.

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The structure and coordination environment of non-aqueous electrolytes based on bis(salicyl)borates of lithium, sodium, potassium, tetramethylammonium (MeBSB) and bis(oxalato)borates from lithium to cesium (MeBOB) using NMR spectroscopy have been investigated. Bis(salicyl)borates (BSB) and bis(oxalate)borates (BOB) of alkali metals and organic cations are considered as promising electroconductive components of electrolytes of modern chemical sources of current (lithium, sodium ion batteries and super-capacitors). The salts were synthesized by the microwave radiation method. The 13C and 11B NMR

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Li, Jinqiu, Yu Duan, Zhaolan Han, et al. "Genome-Wide Identification and Expression Analysis of the NRAMP Family Genes in Tea Plant (Camellia sinensis)." Plants 10, no. 6 (2021): 1055. http://dx.doi.org/10.3390/plants10061055.

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The natural resistant-associated macrophage protein (NRAMP) is a kind of integral membrane transporter which could function on a wide range of divalent metal ions in plants. Little is known about the NRAMP family in Camellia sinensis. In this study, 11 NRAMP genes were identified from the tea plant genome. Phylogenetic analysis showed that the 11 CsNRAMP proteins were split into two groups. The proteins of group 1 contained the conserved motif 6 (GQSSTxTG), while most proteins in group 2 (excepting CsNRAMP7 and CsNRAMP10) contained the conserved residues of motif 6 and motif 2 (GQFIMxGFLxLxxKK

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Natareev, Sergey V., Aleksandr A. Bykov, Dmitriy E. Zakharov, and Tatyana E. Nikiforova. "ION-EXCHANGE IN FLUID-BED DEVICE OF CONTINUOUSLY WORKING." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 60, no. 2 (2017): 85. http://dx.doi.org/10.6060/tcct.2017602.5372.

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The mathematicaldescription of the process of solution purification from heavy metal ionsby means ofion exchange inan apparatus with continuous suspended layer was developed. At the developing mathematical description the following assumptions were used: the ionite is monodisperse and has a spherical shape, uniform initial distribution of substances in the ionite, the ion exchange equilibrium is described by Henry equation, the velocity of the process is limited by both internal and external diffusion, the ionite in the device moves with longitudinal mixing effect, kinetic and hydrodynamic pro

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Zeng, Xing, Tong Gao, Linhui Xie, and Zijian He. "Analytical Solution of the One-Dimensional Transport of Ionic Contaminants in Porous Media with Time-Varying Velocity." Water 15, no. 8 (2023): 1530. http://dx.doi.org/10.3390/w15081530.

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The one-dimensional convection–dispersion equation has been widely used to describe the migration process of contaminant leachate through barriers. However, most of the existing solutions are limited to simple conditions. In this study, a one-dimensional convection–dispersion model with time-dependent velocity was established while considering the change in the permeability coefficient. The analytical solution of the model was obtained by using the integral transformation method. Based on the analytical model, three special conditions were assumed for comparison. The results showed that the co

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Bryant, Sheenah, Tyler Clark, Christopher Thomas, et al. "Insights into the Voltage Regulation Mechanism of the Pore-Forming Toxin Lysenin." Toxins 10, no. 8 (2018): 334. http://dx.doi.org/10.3390/toxins10080334.

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Lysenin, a pore forming toxin (PFT) extracted from Eisenia fetida, inserts voltage-regulated channels into artificial lipid membranes containing sphingomyelin. The voltage-induced gating leads to a strong static hysteresis in conductance, which endows lysenin with molecular memory capabilities. To explain this history-dependent behavior, we hypothesized a gating mechanism that implies the movement of a voltage domain sensor from an aqueous environment into the hydrophobic core of the membrane under the influence of an external electric field. In this work, we employed electrophysiology approac

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Marcus, Yizhak. "Preferential Solvation of Ions in Mixed Solvents. 5. The Alkali Metal, Silver, and Thallium(I) Cations in Aqueous Organic Solvents According to the Inverse Kirkwood-Buff Integral (IKBI) Approach." Journal of Solution Chemistry 36, no. 11-12 (2007): 1385–99. http://dx.doi.org/10.1007/s10953-007-9196-4.

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Jin, Lan. "Genome-Wide Identification and Expression Analysis of the NRAMP Family in Melon." International Journal of Agriculture and Biology 25, no. 02 (2021): 332–37. http://dx.doi.org/10.17957/ijab/15.1672.

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The NRAMPs (natural resistance-associated macrophage proteins) are evolutionarily conserved integral membrane proteins that transport a broad range of metal ions. A comprehensive analysis of NRAMP family genes has not been reported for melon (Cucumis melo). In this study, six CmNRAMP genes were identified from the melon genome. Analyses of gene structure, phylogeny, chromosome location and conserved motifs revealed two groups of CmNRAMPs: one group contained only CmNRAMP5, which had 12 conserved motifs like NRAMPs in Arabidopsis thaliana and rice (Oryza sativa). The other group contained five

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Chik, Nur Syazwanie Izzati, Norin Zamiah Binti Kassim Shaari, Nur Azrini Binti Ramlee, and Muhamad Rezza Bin Abdul Manaf. "Extraction of Silica from Rice Husk Ash and Its Effect on the Properties of the Integral Membrane." ASM Science Journal 17 (November 17, 2022): 1–13. http://dx.doi.org/10.32802/asmscj.2022.1035.

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The large generation of agricultural residue could pose an environmental issue that lies through the disposal problem. Therefore, the incorporation of rice husk ash (RHA) into the membrane formulation could curb this problem besides adding value to the biomass. Rice husk ash is widely used as a filler for a polymer composite to enhance its mechanical properties due to the presence of silica. This research incorporated RHA into the membrane formulation. The silica in the RHA was extracted using an acid-leaching process and dried into silica powder. The silica powder was characterised by using a

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ROUHI, A. MAUREEN. "Escorting Metal Ions." Chemical & Engineering News 75, no. 45 (1997): 34–35. http://dx.doi.org/10.1021/cen-v075n045.p034.

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Spillmann, C., D. Osorio, and R. Waugh. "Integrin Activation by Divalent Ions Affects Neutrophil Homotypic Adhesion." Annals of Biomedical Engineering 30, no. 8 (2002): 1002–11. http://dx.doi.org/10.1114/1.1511241.

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DAVISON, I., G. SHANKAR, M. A. HORTON, and W. T. MASON. "Integrin-dependent Mobilization of Intracellular Calcium Ions in Osteoclasts." Annals of the New York Academy of Sciences 710, no. 1 Toxins and Ex (1994): 287–300. http://dx.doi.org/10.1111/j.1749-6632.1994.tb26636.x.

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Bella, Jordi, and Helen M. Berman. "Integrin–collagen complex: a metal–glutamate handshake." Structure 8, no. 6 (2000): R121—R126. http://dx.doi.org/10.1016/s0969-2126(00)00153-2.

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Griffin, David H., Guther Winkelmann, and Dennis R. Winge. "Metal Ions in Fungi." Mycologia 87, no. 3 (1995): 425. http://dx.doi.org/10.2307/3760843.

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Schweikhard, L., St Becker, K. Dasgupta, et al. "Trapped metal cluster ions." Physica Scripta T59 (January 1, 1995): 236–43. http://dx.doi.org/10.1088/0031-8949/1995/t59/032.

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Ragan, C. Ian. "Metal Ions in Neuroscience." Metal-Based Drugs 4, no. 3 (1997): 125–32. http://dx.doi.org/10.1155/mbd.1997.125.

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Metal ions are believed to participate in many neurodegenerative conditions. In excitotoxic cell death there is convincing evidence for the participation of Ca2+ and Zn2+ ions although the exact molecular mechanisms by which these metals exert their effects are unclear. Only in one instance has the metal binding site of metalloenzymes been exploited for therapeutic purposes and this is the use of Li+ in the treatment of bipolar affective disorder. Again the exact molecular target is not clear but is likely to involve a Mg2+-dependent enzyme of an intracellular signalling pathway. In Parkinson'

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Crabtree, R. H. "Metal Ions at Work." Science 266, no. 5190 (1994): 1591–92. http://dx.doi.org/10.1126/science.266.5190.1591.

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Navasivayam, C. "Biosorbents for metal ions." Bioresource Technology 64, no. 2 (1998): 161. http://dx.doi.org/10.1016/s0960-8524(98)00014-5.

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Blake, Diane A., Robert C. Blake II, Mehraban Khosraviani, and Andrey R. Pavlov. "Immunoassays for metal ions." Analytica Chimica Acta 376, no. 1 (1998): 13–19. http://dx.doi.org/10.1016/s0003-2670(98)00437-1.

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