[EN] SYNTHETIC N-ACETYL-MURAMIC ACID DERIVATIVES AND USES THEREOF<br/>[FR] DÉRIVÉS D'ACIDE MURAMIQUE N-ACÉTYLÉ SYNTHÉTIQUES ET LEURS UTILISATIONS
申请人:UNIV DELAWARE
公开号:WO2016172615A1
公开(公告)日:2016-10-27
The present invention provides N-acetyl-muramic acid (NAM) derivatives having Formula I, wherein Xa is selected from the group consisting of X1-X59, Ya is selected from the group consisting of H, monophosphate, uridine diphosphate and ethyl azide linker prepared from 2-azido-ethanol, and Za is selected from the group consisting of OH, an ethylene diamine coupled fluorophore, a peptide and a peptide with an ethylene diamine coupled fluorophore, wherein the peptide is selected from the group consisting of a monopeptide, a dipeptide, a tripeptide and a pentapeptide. Also provided are methods for synthesizing NAM derivatives and methods for modulating Nod2 in cells, modifying bacterial cell wall or modulating innate immune response by a subject to bacterial cells upon exposure to NAM derivatives.
Synthesis of Functionalized <i>N</i>-Acetyl Muramic Acids To Probe Bacterial Cell Wall Recycling and Biosynthesis
作者:Kristen E. DeMeester、Hai Liang、Matthew R. Jensen、Zachary S. Jones、Elizabeth A. D’Ambrosio、Samuel L. Scinto、Junhui Zhou、Catherine L. Grimes
DOI:10.1021/jacs.8b03304
日期:2018.8.1
purification strategies to access large quantities of these PG building blocks, as well as their derivatives, are challenging. A robust chemoenzymatic synthesis was developed using an expanded NAM library to produce a variety of 2 -N-functionalized UDP NAMs. In addition, a synthetic strategy to access bio-orthogonal 3-lactic acid NAM derivatives was developed. The chemoenzymatic UDP synthesis revealed that the
尿苷二磷酸N-乙酰胞壁酸 (UDP NAM) 是细菌肽聚糖 (PG) 生物合成的关键中间体。作为塑造 PG 骨架的胞壁酸的主要来源,安装在 UDP NAM 中间体的修饰可用于通过代谢掺入选择性地标记和操纵该聚合物。然而,获取大量这些 PG 构建块及其衍生物的合成和纯化策略具有挑战性。使用扩展的 NAM 库开发了强大的化学酶合成,以产生各种 2-N-功能化的 UDP NAM。此外,还开发了一种获取生物正交 3-乳酸 NAM 衍生物的合成策略。化学酶促 UDP 合成表明,细菌细胞壁再循环酶 MurNAc/GlcNAc 异头激酶 (AMgK) 和 NAM α-1 磷酸尿苷转移酶 (MurU) 允许在糖供体的两个和三个位置进行排列。我们使用包括四嗪连接在内的各种生物正交化学进一步探索了这些衍生物在全细胞中革兰 (-) 和革兰 (+) PG 荧光标记中的效用。该报告允许快速和可扩展地访问各种功能化的
A simple approach to the synthesis of muramic acid and isomuramic acid: 1H and 13C NMR characterisation
作者:Valentine Ragoussis、Leondios Leondiadis、Evangelia Livaniou、Gregory P. Evangelatos
DOI:10.1016/s0008-6215(96)00271-6
日期:1997.1
afforded crystalline methyl 2-acetamido-4,6- O -benzylidene-3- O -[( R,S )-1-carboxyethyl]-2-deoxy-α- d -glucopyranoside ( 2 ), in 72% yield, as a mixture of diastereomers. Esterification of 2 with an excess of diazomethane afforded quantitatively the corresponding mixture of epimeric esters, which were very easily separated by column chromatography on silica gel, giving pure ( R ) and ( S ) epimeric esters
Minimalist Tetrazine <i>N</i>-Acetyl Muramic Acid Probes for Rapid and Efficient Labeling of Commensal and Pathogenic Peptidoglycans in Living Bacterial Culture and During Macrophage Invasion
作者:Ashlyn S. Hillman、Stephen N. Hyland、Kimberly A. Wodzanowski、DeVonte L. Moore、Sushanta Ratna、Andrew Jemas、Liam-Michael D. Sandles、Timothy Chaya、Arit Ghosh、Joseph M. Fox、Catherine L. Grimes
DOI:10.1021/jacs.3c13644
日期:2024.3.13
cell wall synthesis because of their small size and ability to incorporate into bacterial peptidoglycan (PG). However, copper-catalyzed alkyne–azidecycloaddition (CuAAC) reactions are not compatible with live cells, and strain-promotedalkyne–azidecycloaddition (SPAAC) reaction rates are modest and, therefore, not as desirable for tracking the temporal alterations of bacterial cell growth, remodeling
The present invention is in the technical field of synthetic biology and metabolic engineering. More particularly, the present invention is in the technical field of fermentation of metabolically engineered cells. The present invention provides a method for the production of a mixture of at least two different oligosaccharides by a cell as well as the purification of at least one of said oligosaccharides from the cultivation. In addition, the present invention provides a method for the production of a mixture of at least two different oligosaccharides by a metabolically engineered cell as well as the purification of at least one of said oligosaccharides from the cultivation.