کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1361600 981467 2007 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Disaccharide analogs as probes for glycosyltransferases in Mycobacterium tuberculosis
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Disaccharide analogs as probes for glycosyltransferases in Mycobacterium tuberculosis
چکیده انگلیسی

Glycosyltransferases (GTs) play a crucial role in mycobacterial cell wall biosynthesis and are necessary for the survival of mycobacteria. Hence, these enzymes are potential new drug targets for the treatment of tuberculosis (TB), especially multiple drug-resistant TB (MDR-TB). Herein, we report the efficient syntheses of Araf(α 1 → 5)Araf, Galf(β 1 → 5)Galf, and Galf(β 1 → 6)Galf disaccharides possessing a 5-N,N-dimethylaminonaphthalene-1-sulfonamidoethyl (dansyl) unit that were prepared as fluorescent disaccharide acceptors for arabinosyl- and galactosyl-transferases, respectively. Such analogs may offer advantages relative to radiolabeled acceptors or donors for studying the enzymes and for assay development and compound screening. Additionally, analogs possessing a 5-azidonaphthalene-1-sulfonamidoethyl unit were prepared as photoaffinity probes for their potential utility in studying active site labeling of the GTs (arabinosyl and galactosyl) in Mycobacterium tuberculosis (MTB). Beyond their preparation, initial biological testing and kinetic analysis of these disaccharides as acceptors toward glycosyltransferases are also presented.

The preparation and preliminary screening data are reported for several fluorescent or pro-fluorescent arabinofuranose and galactofuranose disaccharides as probes and substrates for new assays of arabinosyl- and galactosyltransferases of Mycobacterium tuberculosis.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioorganic & Medicinal Chemistry - Volume 15, Issue 16, 15 August 2007, Pages 5629–5650
نویسندگان
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