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Articoli di riviste sul tema "Steric restrictions"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 9 febbraio 2022

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1

Glagoleva, A. A., and V. V. Vasilevskaya. "Formation of a vesicle-like globule under steric restrictions." Polymer Science Series A 58, no. 2 (2016): 292–301. http://dx.doi.org/10.1134/s0965545x16020097.

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2

Parks, K. Rachael, Anna J. MacCamy, Josephine Trichka, et al. "Overcoming Steric Restrictions of VRC01 HIV-1 Neutralizing Antibodies through Immunization." Cell Reports 29, no. 10 (2019): 3060–72. http://dx.doi.org/10.1016/j.celrep.2019.10.071.

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3

Harris, Wesley R., Binsheng Yang, Sohrab Abdollahi, and Yahia Hamada. "Steric restrictions on the binding of large metal ions to serum transferrin." Journal of Inorganic Biochemistry 76, no. 3-4 (1999): 231–42. http://dx.doi.org/10.1016/s0162-0134(99)00150-6.

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4

Uhl, Werner, and Uwe Schütz. "Monomeres [(Me3Si)2CH]2Al-Te-Al[CH(SiMe3)2]2 mit gewinkelter Al-Te-Al-Gruppe / Monomeric [(Me3Si)2CH]2Al-Te-Al[CH(SiMe3)2] 2 with a Bent Al-Te-Al Group." Zeitschrift für Naturforschung B 49, no. 7 (1994): 931–34. http://dx.doi.org/10.1515/znb-1994-0713.

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AbstractTetrakis[bis(trimethylsilyl)methyl]dialane(4) 1 with an Al-Al bond and Et3P+-Te- give under mild conditions the title compound R2Al-Te-AlR2 (R = CH(SiMe3)2) 2 in high yields. Due to the high steric shielding 2 is monomeric even in the solid state with an angled Al-Te-Al group (110.4°) and an Al-Te bond length of 254.9 pm as expected for a Al-T e single bond with the atoms in low coordination numbers. A hindered rotation of the bulky substituents is observed in solution probably caused by steric restrictions similar that in analogous compounds with Al-S-Al or Al-CH2-Al groups.

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Hernández, Armando R., Larryn W. Peterson, and Eric T. Kool. "Steric Restrictions of RISC in RNA Interference Identified with Size-Expanded RNA Nucleobases." ACS Chemical Biology 7, no. 8 (2012): 1454–61. http://dx.doi.org/10.1021/cb300174c.

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STARCK, SHELLEY R., and RICHARD W. ROBERTS. "Puromycin oligonucleotides reveal steric restrictions for ribosome entry and multiple modes of translation inhibition." RNA 8, no. 7 (2002): 890–903. http://dx.doi.org/10.1017/s1355838202022069.

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7

RUSSELL, RICK, and DANIEL HERSCHLAG. "Specificity from steric restrictions in the guanosine binding pocket of a group I ribozyme." RNA 5, no. 2 (1999): 158–66. http://dx.doi.org/10.1017/s1355838299981839.

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8

Itoh, Satoru G., Hisashi Okumura, and Yuko Okamoto. "Replica-exchange method in van der Waals radius space: Overcoming steric restrictions for biomolecules." Journal of Chemical Physics 132, no. 13 (2010): 134105. http://dx.doi.org/10.1063/1.3372767.

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9

Fitzkee, N. C. "Steric restrictions in protein folding: An -helix cannot be followed by a contiguous -strand." Protein Science 13, no. 3 (2004): 633–39. http://dx.doi.org/10.1110/ps.03503304.

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10

Itoh, Satoru, and Hisashi Okumura. "2P069 1E1505 Van der Waals replica-exchange method to overcome steric restrictions(The 48th Annual Meeting of the Biophysical Society of Japan)." Seibutsu Butsuri 50, supplement2 (2010): S94. http://dx.doi.org/10.2142/biophys.50.s94_2.

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11

Uemori, Yoshio, Hiromasa Miyakawa, and Eishin Kyuno. "Regulated dioxygen affinities by steric restrictions on axial bases in "jellyfish" type cobalt(II) porphyrins." Inorganic Chemistry 27, no. 2 (1988): 377–82. http://dx.doi.org/10.1021/ic00275a027.

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12

Deigner, Hans P., Christopher Blencowe, and Christian E. Freyberg. "Prevalence of steric restrictions in enzymatic nitrile-hydrolysis of a preparation from Rhodococcus sp. 409." Journal of Molecular Catalysis B: Enzymatic 1, no. 2 (1996): 61–70. http://dx.doi.org/10.1016/1381-1177(95)00010-0.

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13

ZÁRRAGA O, M., Y. MORENO N, and C. FRANCO O. "MESO AND RACEMIC 1,1-BIS (BENZYLSULFINYL)-2-ETHYLBUTANE. A b-DISULFOXIDE PRO-LIGAND WITH STERIC RESTRICTIONS." Journal of the Chilean Chemical Society 61, no. 4 (2016): 3157–59. http://dx.doi.org/10.4067/s0717-97072016000400001.

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14

Ahmedova, Anife, Sonya Zareva, and Anna Dołęga. "Metal ion directed template synthesis using 2-acetyl-1,3-indandione and ethylenediamine: steric and electronic restrictions." Mendeleev Communications 30, no. 4 (2020): 519–21. http://dx.doi.org/10.1016/j.mencom.2020.07.039.

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15

Uemori, Yoshio, and Eishin Kyuno. "‘Jellyfish’ type cobalt(II)porphyrins as a hemoprotein model and their regulated dioxygen affinities by steric restrictions on axial ligands." Inorganica Chimica Acta 125, no. 4 (1986): L45—L46. http://dx.doi.org/10.1016/s0020-1693(00)81206-2.

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16

Chen, Chongyi, Yan Sun, Yue Zhao, et al. "Anthracene-induced formation of highly twisted metallacycle and its crystal structure and tunable assembly behaviors." Proceedings of the National Academy of Sciences 118, no. 27 (2021): e2102602118. http://dx.doi.org/10.1073/pnas.2102602118.

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Polycyclic aromatic hydrocarbons (PAHs) continue to attract increasing interest with respect to their applications as luminescent materials. The ordered structure of the metal−organic complex facilitates the selective integration of PAHs that can be tuned to function cooperatively. Here, a unique highly twisted anthracene-based organoplatinum metallacycle was prepared via coordination-driven self-assembly. Single-crystal X-ray diffraction analysis revealed that the metallacycle was twisted through the cooperation of strong π···π stacking interactions and steric hindrance between two anthracene

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17

Ueda, Asami, Mitsuo Umetsu, Takeshi Nakanishi, et al. "Chemically Crosslinked Bispecific Antibodies for Cancer Therapy: Breaking from the Structural Restrictions of the Genetic Fusion Approach." International Journal of Molecular Sciences 21, no. 3 (2020): 711. http://dx.doi.org/10.3390/ijms21030711.

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Antibodies are composed of structurally and functionally independent domains that can be used as building blocks to construct different types of chimeric protein-format molecules. However, the generally used genetic fusion and chemical approaches restrict the types of structures that can be formed and do not give an ideal degree of homogeneity. In this study, we combined mutation techniques with chemical conjugation to construct a variety of homogeneous bivalent and bispecific antibodies. First, building modules without lysine residues—which can be chemical conjugation sites—were generated by

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18

Kurczab, Rafał, Katarzyna Kucwaj-Brysz, and Paweł Śliwa. "The Significance of Halogen Bonding in Ligand–Receptor Interactions: The Lesson Learned from Molecular Dynamic Simulations of the D4 Receptor." Molecules 25, no. 1 (2019): 91. http://dx.doi.org/10.3390/molecules25010091.

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Recently, a computational approach combining a structure–activity relationship library containing pairs of halogenated ligands and their corresponding unsubstituted ligands (called XSAR) with QM-based molecular docking and binding free energy calculations was developed and used to search for amino acids frequently targeted by halogen bonding, also known as XB hot spots. However, the analysis of ligand–receptor complexes with halogen bonds obtained by molecular docking provides a limited ability to study the role and significance of halogen bonding in biological systems. Thus, a set of molecula

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19

Derewenda, Zygmunt S., and Urszula Derewenda. "Relationships among serine hydrolases: evidence for a common structural motif in triacylglyceride lipases and esterases." Biochemistry and Cell Biology 69, no. 12 (1991): 842–51. http://dx.doi.org/10.1139/o91-125.

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A detailed analysis of the highly refined (1.9 Å resolution) molecular model of the fungal (Rhizomucor miehei) triglyceride lipase reveals a unique conformation of the oligopeptide containing the active serine (Ser 144) residue. It consists of a six-residue β-strand (strand 4 of the central sheet), a four-residue turn of type II′ with serine in the ε conformation, and a buried α-helix packed in a parallel way against strands 4 and 5 of the central β-pleated sheet. It is shown that the invariant glycines in positions (1) and (5) of the so-called lipase consensus sequence (G-X-S-X-G) are in exte

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20

Cowie, J. M. G., та A. A. N. Reilly. "Effect of steric restrictions on the enhancement of miscibility through hydrogen bonding in blends of modified poly(α-methyl styrene) with polymers containing acceptor sites". Journal of Applied Polymer Science 47, № 7 (1993): 1155–63. http://dx.doi.org/10.1002/app.1993.070470703.

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21

Becker and Sierka. "Atomistic Simulations of Plasma-Enhanced Atomic Layer Deposition." Materials 12, no. 16 (2019): 2605. http://dx.doi.org/10.3390/ma12162605.

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Plasma-enhanced atomic layer deposition (PEALD) is a widely used, powerful layer-by-layer coating technology. Here, we present an atomistic simulation scheme for PEALD processes, combining the Monte Carlo deposition algorithm and structure relaxation using molecular dynamics. In contrast to previous implementations, our approach employs a real, atomistic model of the precursor. This allows us to account for steric hindrance and overlap restrictions at the surface corresponding to the real precursor deposition step. In addition, our scheme takes various process parameters into account, employin

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22

Bellich, Barbara, Ining A. Jou, Marco Caterino, et al. "Burkholderia cenocepacia H111 Produces a Water-Insoluble Exopolysaccharide in Biofilm: Structural Determination and Molecular Modelling." International Journal of Molecular Sciences 21, no. 5 (2020): 1702. http://dx.doi.org/10.3390/ijms21051702.

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Biofilms are a multicellular way of life, where bacterial cells are close together and embedded in a hydrated macromolecular matrix which offers a number of advantages to the cells. Extracellular polysaccharides play an important role in matrix setup and maintenance. A water-insoluble polysaccharide was isolated and purified from the biofilm produced by Burkholderia cenocepacia strain H111, a cystic fibrosis pathogen. Its composition and glycosidic linkages were determined using Gas–Liquid Chromatography–Mass Spectrometry (GLC–MS) on appropriate carbohydrate derivatives while its complete stru

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23

Ryzhkov, Aleksandr, and Yuriy Raikher. "Coarse-Grained Molecular Dynamics Modelling of a Magnetic Polymersome." Nanomaterials 8, no. 10 (2018): 763. http://dx.doi.org/10.3390/nano8100763.

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A coarse-grained molecular dynamics framework is proposed to investigate the equilibrium structure and quasi-static deformational response of a magnetic polymersome, a hollow object whose magnetoactive part is its shell (membrane). In the developed scheme, the shell is modelled as a pair of two concentric interfaces, between which a layer of a linearly viscous fluid filled with magnetic nanoparticles is confined; the thickness of this layer slightly exceeds the nanoparticle diameter. The shell boundaries possess weak bending elasticity, very high surface tension and are impermeable for the nan

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24

Chowdhury, Sourav, Dwipanjan Sanyal, Sagnik Sen, Vladimir N. Uversky, Ujjwal Maulik, and Krishnananda Chattopadhyay. "Evolutionary Analyses of Sequence and Structure Space Unravel the Structural Facets of SOD1." Biomolecules 9, no. 12 (2019): 826. http://dx.doi.org/10.3390/biom9120826.

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Superoxide dismutase (SOD) is the primary enzyme of the cellular antioxidant defense cascade. Misfolding, concomitant oligomerization, and higher order aggregation of human cytosolic SOD are linked to amyotrophic lateral sclerosis (ALS). Although, with two metal ion cofactors SOD1 is extremely robust, the de-metallated apo form is intrinsically disordered. Since the rise of oxygen-based metabolism and antioxidant defense systems are evolutionary coupled, SOD is an interesting protein with a deep evolutionary history. We deployed statistical analysis of sequence space to decode evolutionarily c

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Micheel, Mathias, Bei Liu, and Maria Wächtler. "Influence of Surface Ligands on Charge-Carrier Trapping and Relaxation in Water-Soluble CdSe@CdS Nanorods." Catalysts 10, no. 10 (2020): 1143. http://dx.doi.org/10.3390/catal10101143.

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In this study, the impact of the type of ligand at the surface of colloidal CdSe@CdS dot-in-rod nanostructures on the basic exciton relaxation and charge localization processes is closely examined. These systems have been introduced into the field of artificial photosynthesis as potent photosensitizers in assemblies for light driven hydrogen generation. Following photoinduced exciton generation, electrons can be transferred to catalytic reaction centers while holes localize into the CdSe seed, which can prevent charge recombination and lead to the formation of long-lived charge separation in a

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26

Förner, Wolfgang, and Hassan M. Badawi. "Vibrational Spectra of Phenylphosphonic and Phenylthiophosphonic Acid and their Complete Assignment." Zeitschrift für Naturforschung B 65, no. 3 (2010): 357—s374. http://dx.doi.org/10.1515/znb-2010-0320.

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The structures and conformational stabilities of phenylphosphonic acid and phenylthiophosphonic acid were investigated using calculations mostly at DFT/6-311G** and ab initio MP2/6-311G** level. From the calculations the molecules were predicted to exist in a conformational equilibrium consisting of two conformers which as enantiomers have the same energy, but rather unexpected dihedral angles XPCC (X being O or S) which are not equal to zero. The antisymmetric potential function for the internal rotation was determined for each one of the molecules. In these functions the conformers with zero

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27

Ibáñez, María M., Susana K. Checa, and Fernando C. Soncini. "A Single Serine Residue Determines Selectivity to Monovalent Metal Ions in Metalloregulators of the MerR Family." Journal of Bacteriology 197, no. 9 (2015): 1606–13. http://dx.doi.org/10.1128/jb.02565-14.

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ABSTRACTMerR metalloregulators alleviate toxicity caused by an excess of metal ions, such as copper, zinc, mercury, lead, cadmium, silver, or gold, by triggering the expression of specific efflux or detoxification systems upon metal detection. The sensor protein binds the inducer metal ion by using two conserved cysteine residues at the C-terminal metal-binding loop (MBL). Divalent metal ion sensors, such as MerR and ZntR, require a third cysteine residue, located at the beginning of the dimerization (α5) helix, for metal coordination, while monovalent metal ion sensors, such as CueR and GolS,

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28

Dix, Sean T., Joseph K. Scott, Rachel B. Getman, and Charles T. Campbell. "Using degrees of rate control to improve selective n-butane oxidation over model MOF-encapsulated catalysts: sterically-constrained Ag3Pd(111)." Faraday Discussions 188 (2016): 21–38. http://dx.doi.org/10.1039/c5fd00198f.

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Metal nanoparticles encapsulated within metal organic frameworks (MOFs) offer steric restrictions near the catalytic metal that can improve selectivity, much like in enzymes. A microkinetic model is developed for the regio-selective oxidation of n-butane to 1-butanol with O<sub>2</sub> over a model for MOF-encapsulated bimetallic nanoparticles. The model consists of a Ag<sub>3</sub>Pd(111) surface decorated with a 2-atom-thick ring of (immobile) helium atoms which creates an artificial pore of similar size to that in common MOFs, which sterically constrains the adsorbed reaction intermediates.

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Cates, D. L., and C. S. Hirtzel. "Influence of volume-restriction effect on phase separation phenomena in steric dispersions." Journal of Colloid and Interface Science 120, no. 2 (1987): 404–18. http://dx.doi.org/10.1016/0021-9797(87)90367-5.

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Mierzejewska, Karolina, Matthias Bochtler, and Honorata Czapinska. "On the role of steric clashes in methylation control of restriction endonuclease activity." Nucleic Acids Research 44, no. 1 (2015): 485–95. http://dx.doi.org/10.1093/nar/gkv1341.

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31

Castronovo, Matteo, Slobodanka Radovic, Christian Grunwald, Loredana Casalis, Michele Morgante, and Giacinto Scoles. "Control of Steric Hindrance on Restriction Enzyme Reactions with Surface-Bound DNA Nanostructures." Nano Letters 8, no. 12 (2008): 4140–45. http://dx.doi.org/10.1021/nl802370g.

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32

Štěpnička, Petr, Tomáš Baše, Ivana Císařová, Jiří Kubišta, Štěpán Vyskočil, and Martin Štícha. "Synthesis and Catalytic Activity of Spaced Ferrocene Oxazolines." Collection of Czechoslovak Chemical Communications 68, no. 7 (2003): 1206–32. http://dx.doi.org/10.1135/cccc20031206.

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Chiral 2-[{N-aryl-N-(ferrocenylmethyl)amino}methyl]-4-(1-methylethyl)-4,5-dihydroxazoles with various substituents at the aryl ring were prepared by alkylation of N-(ferrocenylmethyl)anilines, FcCH2NHC6H4R (Fc = ferrocenyl), with (S)-2-(chloromethyl)-4-(1-methylethyl)-4,5-dihydrooxazole. The oxazoles, substituted anilines, and the precursors of the latter, the respective Schiff bases FcCH=NC6H4R, were characterized by standard methods and further studied by mass spectrometry. The oxazoles were further tested as chiral auxiliaries in the addition of diethylzinc to benzaldehyde but showed only n

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33

Lifshits, Liubov M., Varun Singh, Matthias Zeller, and Jeremy K. Klosterman. "Ethyl 4-(9H-carbazol-9-yl)benzoate: fivefold superstructure with ten crystallographically independent molecules refined from a twinned crystal." Acta Crystallographica Section C Structural Chemistry 72, no. 11 (2016): 901–9. http://dx.doi.org/10.1107/s2053229616015825.

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The photophysical properties of organic fluorophores are sensitive to the local sterics of the surrounding environment. Restriction of torsional motion in aggregates and crystals can give rise to enhanced emissive behavior.N-Aryl-substituted carbazoles serve an essential role as ubiquitous host matrices for organic light-emitting diodes, due to their large band gaps and high triplet energies, and so studies connecting photophysical behaviors with detailed crystallographic structural information are important. To elucidate the structural changes involved in the excited-state charge-transfer pro

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34

Madruga, Marta Suely, Taliana Kênia Alves Bezerra, Ingrid Conceição Dantas Guerra, Ana Sancha Malveira Batista, Aderbal Marcos de Azevedo Silva, and Rafaella de Paula Paseto Fernandes. "The effect of feed restriction on the fat profile of Santa Inês lamb meat." Acta Scientiarum. Animal Sciences 42 (April 2, 2020): e48229. http://dx.doi.org/10.4025/actascianimsci.v42i1.48229.

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Consumers today are increasingly more demanding regarding their food, seeking healthier and better quality products, and in this context animal nutrition plays a key role. The meat composition can be altered by animal feed itself, being that lipid profile may directly contribute to consumer health, reducing the predisposition of developing cardiovascular diseases, main cause of mortality in the world. Thus, the aim of this study was to assess the effect of dietary feed restriction in Santa Inês lambs on their intramuscular, intermuscular, and subcutaneous fat profile, fat profile of the longis

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Kisiala, Marlena, Monika Kowalska, Michal Pastor, Henryk J. Korza, Honorata Czapinska, and Matthias Bochtler. "Restriction endonucleases that cleave RNA/DNA heteroduplexes bind dsDNA in A-like conformation." Nucleic Acids Research 48, no. 12 (2020): 6954–69. http://dx.doi.org/10.1093/nar/gkaa403.

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Abstract Restriction endonucleases naturally target DNA duplexes. Systematic screening has identified a small minority of these enzymes that can also cleave RNA/DNA heteroduplexes and that may therefore be useful as tools for RNA biochemistry. We have chosen AvaII (G↓GWCC, where W stands for A or T) as a representative of this group of restriction endonucleases for detailed characterization. Here, we report crystal structures of AvaII alone, in specific complex with partially cleaved dsDNA, and in scanning complex with an RNA/DNA hybrid. The specific complex reveals a novel form of semi-specif

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Narce, Michel, Jean-Pierre Poisson, Jacques Belleville та Bernard Chanussot. "Depletion of Δ9 desaturase (EC 1.14.99.5) enzyme activity in growing rat during dietary protein restriction". British Journal of Nutrition 68, № 3 (1992): 627–37. http://dx.doi.org/10.1079/bjn19920121.

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The effects of protein restriction on Δ9 desaturase (EC 1.14.99.5) activity were studied in growing rats. A control group was fed on a balanced diet (200 g casein/kg; BD) for 28 d. The experimental group was fed on the low-protein diet (20 g casein/kg; LP) for 26 d, then refed the balanced diet (BD-R) for 2 d. Rats were born to and suckled from normally fed dams. The enzyme activity was measured after 2 and 14 d of LP, and 26 d of LP plus 2 d of BD-R, by incubations in vitro of hepatic microsomal pellets with [1-14C]stearic acid. The results indicated a decreased Δ9 desaturase activity after 2

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Chen, Lingyi, and Jonathan Widom. "Molecular basis of transcriptional silencing in budding yeast." Biochemistry and Cell Biology 82, no. 4 (2004): 413–18. http://dx.doi.org/10.1139/o04-035.

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Transcriptional silencing is a phenomenon in which the transcription of genes by RNA polymerase II or III is repressed, dependent on the chromosomal location of a gene. Transcriptional silencing normally occurs in highly condensed heterochromatin regions of the genome, suggesting that heterochromatin might repress transcription by restricting the ability of sequence-specific gene activator proteins to access their DNA target sites. However, recent studies show that heterochromatin structure is inherently dynamic, and that sequence-specific regulatory proteins are able to bind to their target s

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Feng, Junyong, Guo Hua Xu, Yue An, and Xiangxuan Zeng. "Construction of the homogeneously mixed SAM composed of octyltriethoxysilane and octadecyltrichlorosilane by taking advantage of the molecular steric restriction." Colloids and Surfaces A: Physicochemical and Engineering Aspects 316, no. 1-3 (2008): 194–201. http://dx.doi.org/10.1016/j.colsurfa.2007.09.013.

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Wu, Weifeng, Shuai Yuan, Jiajie She, Yusheng Dou, and Roland E. Allen. "Bonded Excimer in Stacked Cytosines: A Semiclassical Simulation Study." International Journal of Photoenergy 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/937474.

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The formation of a covalent bond between two stacked cytosines, one of which is excited by an ultrafast laser pulse, was studied by semiclassical dynamics simulations. The results show that a bonded excimer is created, which sharply lowers the energy gap between the LUMO and HOMO and consequently facilitates the deactivation of the electronically excited molecule. This is different from the case of two stacked adenines, where the formation of a covalent bond alters the nonadiabatic deactivation mechanism in two opposite ways. It lowers the energy gap and consequently leads to the coupling betw

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40

Hu, Haidai, Ákos Nemecz, Catherine Van Renterghem, et al. "Crystal structures of a pentameric ion channel gated by alkaline pH show a widely open pore and identify a cavity for modulation." Proceedings of the National Academy of Sciences 115, no. 17 (2018): E3959—E3968. http://dx.doi.org/10.1073/pnas.1717700115.

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Pentameric ligand-gated ion channels (pLGICs) constitute a widespread class of ion channels, present in archaea, bacteria, and eukaryotes. Upon binding of their agonists in the extracellular domain, the transmembrane pore opens, allowing ions to go through, via a gating mechanism that can be modulated by a number of drugs. Even though high-resolution structural information on pLGICs has increased in a spectacular way in recent years, both in bacterial and in eukaryotic systems, the structure of the open channel conformation of some intensively studied receptors whose structures are known in a

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Honda, Shinya, Shinichi Ohashi, and Hatsuho Uedaira. "Design for the Peptide Analog of Calcium Binding Loops by Considering the Steric Restriction Effect of Incorporated Nonprotein Amino Acids." Chemistry Letters 20, no. 5 (1991): 757–60. http://dx.doi.org/10.1246/cl.1991.757.

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Taylor, A. J. "Erythrocyte Membrane Fatty Acid Composition in Hypercholesterolemia." Annals of Clinical Biochemistry: International Journal of Laboratory Medicine 31, no. 4 (1994): 351–54. http://dx.doi.org/10.1177/000456329403100408.

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Abstract (sommario):

The fatty acid composition of the erythrocyte membrane was determined in 22 hypercholesterolaemic patients managed by dietary restriction, and compared with that of 22 normocholesterolaemic controls, roughly matched for age and sex with the patient group. The patients exhibited higher relative proportions of palmitic ( P<0·01) and stearic ( P<0·005) acids and lower relative proportions of linoleic acid ( P<0·05) in the erythrocyte membrane, compared with controls, which could be due to presumed dietary differences between the groups. In the patients, the degree of hypercholesterolaemi

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Ho, K. F., R. J. Huang, K. Kawamura та ін. "Dicarboxylic acids, ketocarboxylic acids, α-dicarbonyls, fatty acids and benzoic acid in PM<sub>2.5</sub> aerosol collected during CAREBeijing-2007: an effect of traffic restriction on air quality". Atmospheric Chemistry and Physics Discussions 14, № 10 (2014): 14855–87. http://dx.doi.org/10.5194/acpd-14-14855-2014.

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Abstract (sommario):

Abstract. Thirty water-soluble organic species, including dicarboxylic acids, ketocarboxylic acids, α-dicarbonyls, fatty acids, and benzoic acid were determined as well as organic carbon (OC), elemental carbon (EC) and water-soluble organic carbon (WSOC) in PM2.5 samples collected during the Campaign of Air Quality Research in Beijing 2007 (CAREBeijing-2007) in the urban and suburban areas of Beijing. The objective of this study is to identify the influence of traffic emissions and regional transport to the atmosphere in Beijing during summer. PM2.5 samples collected with or without traffic re

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44

Ho, K. F., R. J. Huang, K. Kawamura та ін. "Dicarboxylic acids, ketocarboxylic acids, α-dicarbonyls, fatty acids and benzoic acid in PM<sub>2.5</sub> aerosol collected during CAREBeijing-2007: an effect of traffic restriction on air quality". Atmospheric Chemistry and Physics 15, № 6 (2015): 3111–23. http://dx.doi.org/10.5194/acp-15-3111-2015.

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Abstract (sommario):

Abstract. Thirty water-soluble organic species, including dicarboxylic acids, ketocarboxylic acids, α-dicarbonyls, fatty acids and benzoic acid were determined as well as organic carbon (OC), elemental carbon (EC) and water-soluble organic carbon (WSOC) in PM2.5 samples collected during the Campaign of Air Quality Research in Beijing 2007 (CAREBeijing-2007) in the urban and suburban areas of Beijing. The objective of this study is to identify the influence of traffic emissions and regional transport to the atmosphere in Beijing during summer. PM2.5 samples collected with or without traffic res

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45

Ortega-Senovilla, Henar, Gioia Alvino, Emanuela Taricco, Irene Cetin, and Emilio Herrera. "Enhanced circulating retinol and non-esterified fatty acids in pregnancies complicated with intrauterine growth restriction." Clinical Science 118, no. 5 (2009): 351–58. http://dx.doi.org/10.1042/cs20090292.

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Abstract (sommario):

IUGR (intrauterine growth restriction) increases the incidence of perinatal complications and, although several placental transport functions have been shown to be altered in pregnancies complicated by IUGR, the mechanism behind it is not well understood. The aim of the present study was to investigate factors in maternal and cord blood plasma from normal and IUGR-complicated pregnancies associated with the body weight of newborns. At the time of Caesarean section, 24 women with IUGR pregnancies were compared with a group of 30 normal controls with AGA (appropriate gestational age) fetuses who

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46

Hollande, Louis, Sandra Domenek, and Florent Allais. "Chemo-Enzymatic Synthesis of Renewable Sterically-Hindered Phenolic Antioxidants with Tunable Polarity from Lignocellulose and Vegetal Oil Components." International Journal of Molecular Sciences 19, no. 11 (2018): 3358. http://dx.doi.org/10.3390/ijms19113358.

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Abstract (sommario):

Despite their great antioxidant activities, the use of natural phenols as antioxidant additives for polyolefins is limited owing to their weak thermal stability and hydrophilic character. Herein, we report a sustainable chemo-enzymatic synthesis of renewable lipophilic antioxidants specifically designed to overcome these restrictions using naturally occurring ferulic acid (found in lignocellulose) and vegetal oils (i.e., lauric, palmitic, stearic acids, and glycerol) as starting materials. A predictive Hansen and Hildebrand parameters-based approach was used to tailor the polarity of newly des

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47

Woo, Christina M., Zhenwu Li, Eric K. Paulson, and Seth B. Herzon. "Structural basis for DNA cleavage by the potent antiproliferative agent (–)-lomaiviticin A." Proceedings of the National Academy of Sciences 113, no. 11 (2016): 2851–56. http://dx.doi.org/10.1073/pnas.1519846113.

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Abstract (sommario):

(–)-Lomaiviticin A (1) is a complex antiproliferative metabolite that inhibits the growth of many cultured cancer cell lines at low nanomolar–picomolar concentrations. (–)-Lomaiviticin A (1) possesses a C2-symmetric structure that contains two unusual diazotetrahydrobenzo[b]fluorene (diazofluorene) functional groups. Nucleophilic activation of each diazofluorene within 1 produces vinyl radical intermediates that affect hydrogen atom abstraction from DNA, leading to the formation of DNA double-strand breaks (DSBs). Certain DNA DSB repair-deficient cell lines are sensitized toward 1, and 1 is un

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48

Buettner, Christoph, Helmut Grasberger, Kristine Hermansdorfer, Bingkun Chen, Bettina Treske, and Onno E. Janssen. "Characterization of the Thyroxine-Binding Site of Thyroxine-Binding Globulin by Site-Directed Mutagenesis." Molecular Endocrinology 13, no. 11 (1999): 1864–72. http://dx.doi.org/10.1210/mend.13.11.0367.

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Abstract (sommario):

Abstract The principal transport protein for T4 in human blood, thyroxine-binding globulin (TBG), binds T4 with an exceptionally high affinity (Ka = 1010m−1). Its homology to the superfamily of the serpins has recently been used in the design of chimeric proteins, providing experimental evidence that an eight-stranded β-barrel domain encompasses the ligand-binding site. We have now characterized the T4 binding site by site-directed mutagenesis. Sequence alignment of TBG from several species revealed a phylogenetically highly conserved stretch of amino acids comprising strands 2B and 3B of the

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KRITCHEVSKY, DAVID. "ANIMAL PRODUCTS AND DEGENERATIVE DISEASE." Canadian Journal of Animal Science 66, no. 1 (1986): 3–10. http://dx.doi.org/10.4141/cjas86-002.

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Abstract (sommario):

There is little argument concerning blood cholesterol as a risk factor for coronary heart disease, but considerable controversy regarding the influence of diet on blood cholesterol. All dietary components can affect cholesterolemia. Fats of animal origin are more saturated than corn or safflower oils, but the saturated vegetable fats (coconut and palm oils) are the most cholesterolemic. Cocoa butter is a highly saturated fat but its high content of stearic acid renders it much less cholesterolemic than would be expected. Animal protein, fed as the only source of protein, is more cholesterolemi

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50

HIRSA, A. H., J. M. LOPEZ, and R. MIRAGHAIE. "Determination of surface shear viscosity via deep-channel flow with inertia." Journal of Fluid Mechanics 470 (October 31, 2002): 135–49. http://dx.doi.org/10.1017/s002211200200191x.

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Abstract (sommario):

Results of an experimental and computational study of the flow in an annular region bounded by stationary inner and outer cylinders and driven by the rotation of the floor are presented. The top is a flat air/water interface, covered by an insoluble monolayer. We develop a technique to determine the surface shear viscosity from azimuthal velocity measurements at the interface which extends the range of surface shear viscosity that can be measured using a deep-channel viscometer in the usual Stokes flow regime by exploiting flow inertia. A Navier–Stokes-based model of bulk flow coupled to a New

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