A novel fluorogenic substrate for dinuclear Zn(II)-containing metallo-β-lactamases
摘要:
In an effort to prepare a fluorogenic substrate to be used in activity assays with metallo-beta-lactamases, (6R,7R)-8-oxo-7-(2-oxo-2H-chromene-3-carboxamido)-3-((4-(2-oxo-2H-chromene-3-carboxamido)-phe nylthio)methyl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid (CA) was synthesized and characterized. CA exhibited a fluorescence quantum yield (phi) of 0.0059, two fluorescence lifetimes of 3.63 x 10 (-10) and 5.38 x 10(-9) s, and fluorescence intensity that is concentration-dependent. Steady-state kinetic assays revealed that CA is a substrate for metallo-beta-lactamases (M beta Ls) L1 and CcrA, exhibiting K-m and k(cat) values of 18 mu M and 5 s(-1) and 11 mu M and 17 s(-1), respectively. (C) 2013 Elsevier Ltd. All rights reserved.
PHOTOACTIVATABLE ANTIMICROBIAL AGENTS AND THERAPEUTIC AND DIAGNOSTIC METHODS OF USING SAME
申请人:Hasan Tayyaba
公开号:US20110112059A1
公开(公告)日:2011-05-12
The present invention provides photosensitizer compounds for use in detecting beta-lactamase activity. Methods and kits that utilize the photosensitizer compounds of the invention for the detection of, quantitation of, and classification or typing of microbial beta-lactamases.
[EN] beta-LACTAMASE TARGETED PHOTOSENSITIZER FOR PESTICIDE AND PEST DETECTION<br/>[FR] PHOTOSENSIBILISATEUR CIBLÉ PAR LA Beta-LACTAMASE POUR PESTICIDE ET DÉTECTION D'ORGANISMES NUISIBLES
申请人:GEN HOSPITAL CORP
公开号:WO2013192521A1
公开(公告)日:2013-12-27
Photoactivatable pesticide compounds and methods for the use thereof in the elimination and detection of pests are provided.