Results 21 to 30 of about 5,840,078 (380)

QnrS1 structure-activity relationships [PDF]

Journal of Antimicrobial Chemotherapy, 2014
Loop B is important for low-level quinolone resistance conferred by Qnr proteins. The role of individual amino acids within QnrS1 loop B in quinolone resistance and gyrase protection was assessed.qnrS1 and 11 qnrS1 alleles with site-directed Ala mutations in loop B were expressed in Escherichia coli BL21(DE3) and proteins were purified by affinity ...
David C. Hooper, George A. Jacoby, María M. Tavío, María M. Tavío   +3 more
openaire   +3 more sources

Cellular Defensive Mechanisms of Tea Polyphenols: Structure-Activity Relationship

International Journal of Molecular Sciences, 2021
Tea is particularly rich in polyphenols, including catechins and theaflavins, thearubigins, flavonols, and phenolic acids, which are believed to contribute to the health benefits of tea.
Van-Long Truong, W. Jeong
semanticscholar   +1 more source

Relationship Between the Structure and Immune Activity of Components From the Active Polysaccharides APS-II of Astragali Radix by Enzymolysis of Endo α-1,4-Glucanase

Frontiers in Pharmacology, 2022
Astragali Radix polysaccharides (APSs) have a wide range of biological activities. Our preliminary experiment showed that APS-Ⅱ (10 kDa) was the main immunologically active component of APSs.
Ke Li, Ke Li, Ke Li, Ke Li, Xue-qin Li, Xue-qin Li, Xue-qin Li, Guang-xin Li, Lian-jie Cui, Lian-jie Cui, Lian-jie Cui, Xue-mei Qin, Xue-mei Qin, Xue-mei Qin, Zhen-yu Li, Zhen-yu Li, Zhen-yu Li, Yu-guang Du, Yue-tao Liu, Yue-tao Liu, Yue-tao Liu, Ai-ping Li, Ai-ping Li, Ai-ping Li, Xing-yun Zhao, Xing-yun Zhao, Xing-yun Zhao, Xin-hui Fan, Xin-hui Fan, Xin-hui Fan   +29 more
doaj   +1 more source

Structure-functional activity relationship of β-glucans from the perspective of immunomodulation : a mini-review [PDF]

, 2020
β-Glucans are a heterogeneous group of glucose polymers with a common structure comprising a main chain of β-(1,3) and/or β-(1,4)-glucopyranosyl units, along with side chains with various branches and lengths.
Baruah, Sri Kartik, Bossier, Peter, Cox, Eric, Han, Biao, Vanrompay, Daisy   +4 more
core   +2 more sources

Antibacterial Properties of Polyphenols: Characterization and QSAR (Quantitative Structure–Activity Relationship) Models

Frontiers in Microbiology, 2019
Besides their established antioxidant activity, many phenolic compounds may exhibit significant antibacterial activity. Here, the effect of a large dataset of 35 polyphenols on the growth of 6 foodborne pathogenic or food-spoiling bacterial strains ...
Lynda Bouarab-Chibane, V. Forquet, P. Lanteri, Y. Clément, Lucie Léonard-Akkari, N. Oulahal, P. Degraeve, C. Bordes   +7 more
semanticscholar   +1 more source

Structure and permeability of ion-channels by integrated AFM and waveguide TIRF microscopy. [PDF]

, 2014
Membrane ion channels regulate key cellular functions and their activity is dependent on their 3D structure. Atomic force microscopy (AFM) images 3D structure of membrane channels placed on a solid substrate.
Arce, Fernando Teran, Cohen, Daniel A, Lal, Ratnesh, Patel, Nirav R, Quist, Arjan P, Ramachandran, Srinivasan   +5 more
core   +2 more sources

Structure - Activity Relationship of Mutant KatG from INH resistant Mycobacterium tuberculosis

Journal of Pure and Applied Microbiology, 2017
Mutation in katG gene of Mycobacterium tuberculosis encoding catalase-peroxidase that damage its enzyme activities is well associated with isoniazid (INH) resistance. The katG gene from INH resistant strain of M.
Purkan Purkan, Sri Puji Astuti Wahyuningsih, Wiwin Retnowati, Diah Amelia, Alfain Noerdin Alimny   +4 more
doaj   +1 more source

Structure-activity relationships of 3-substituted-5,5- diphenylhydantoins as potential antiproliferative and antimicrobial agents [PDF]

Journal of the Serbian Chemical Society, 2011
A series of twelve 3-substituted-5,5-diphenylhydantoins was synthesized, including some whose anticonvulsant activities have already been reported in the literature.
Trišović Nemanja, Marković Snežana, Čomić Ljiljana, Božić Biljana, Ušćumlić Gordana, Stefanović Olgica, Božić Bojan, Obradović Ana   +7 more
doaj   +1 more source

The relationship between redox enzyme activity and electrochemical potential—cellular and mechanistic implications from protein film electrochemistry [PDF]

, 2011
In protein film electrochemistry a redox protein of interest is studied as an electroactive film adsorbed on an electrode surface. For redox enzymes this configuration allows quantification of the relationship between catalytic activity and ...
Ackrell, Anderson, Anderson, Andrew G. Mayes, Andrew J. Gates, Angove, Armstrong, Armstrong, Armstrong, Armstrong, Armstrong, Arnoux, Bamford, Bekker, Berks, Blumberger, Blumberger, Buc, Butler, Butler, Chun Yip To, Clarke, Costa, David J. Richardson, Davis, de Vries, Dementin, Dias, Dridge, Eddowes, Ellington, Elliott, Field, Flores, Fourmond, Fourmond, Fourmond, Frangioni, Frew, Gates, Gates, Gemma L. Kemp, Georgellis, Gwyer, Hagedoorn, Hanson, Healy, Heering, Hirst, Hofmann, Hunte, Immoos, Ivanov, James Mann, Jepson, Jepson, Jeuken, Julea N. Butt, Kell, Kemp, Lin, Léger, Léger, Léger, Marritt, Marsili, Moore, Murgida, Niki, Otten, Otten, Page, Pershad, Potter, Ramirez, Richardson, Ridnour, Sears, Sears, Simons, Sophie J. Marritt, Sun, Tenderholt, Tenderholt, Thauer, Tipmanee, Wang, Westerhoff, Yeh, Zuman   +89 more
core   +1 more source

Application of Hansch’s Model to Capsaicinoids and Capsinoids: A Study Using the Quantitative Structure−Activity Relationship. A Novel Method for the Synthesis of Capsinoids [PDF]

, 2010
We describe a synthetic approach for two families of compounds, the capsaicinoids and capsinoids, as part of a study of the quantitative relationship between structure and ...
Appendino G., Barbero G. F., Barbero G. F., Bennett D. J., Careaga M., Chou J., Constant H. L., Gannett P. M., Hancock C. R., Henderson D. E., Iwai K., Kaga H., Kagan I. A., Kim C. S., Kobata K., Kobata K., Lipinski C. A., Macho A., Macias F. A., Mannhold R., Morris G. C., Nitsch J. P., Ohnuki K., Ohnuki K., Perucka I., Rekker R. F., Rosa A., Sancho R., Surh Y. J., Sutoh K., Torregiani E., Unnikrishnan M. C., Zewdie Y.   +32 more
core   +3 more sources