How Mycobacterium tuberculosis Galactofuranosyl Transferase2 (GlfT2) Generates Alternating beta-(1-6) and beta-(1-5) Linkages: AQM/MM Molecular Dynamics Study of the Chemical Steps

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F18%3A00102716" target="_blank" >RIV/00216224:14740/18:00102716 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1002/chem.201800558" target="_blank" >http://dx.doi.org/10.1002/chem.201800558</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/chem.201800558" target="_blank" >10.1002/chem.201800558</a>

Result language

angličtina

Original language name

How Mycobacterium tuberculosis Galactofuranosyl Transferase2 (GlfT2) Generates Alternating beta-(1-6) and beta-(1-5) Linkages: AQM/MM Molecular Dynamics Study of the Chemical Steps

Original language description

Mycobacterium tuberculosis features a unique cell wall that protects the bacterium from the external environment. Disruption of the cell wall assembly is a promising direction for novel anti-tuberculotic drugs. A key component of the cell wall is galactan, a polysaccharide chain composed of galactofuranose (Galf) units connected by alternating beta-(1–5) and beta-(1–6) linkages. The majority of the galactan chain is biosynthesized by a bifunctional enzyme—galactofuranosyl transferase 2 (GlfT2). GlfT2 catalyzes two reactions: the formation of beta-(1–5) and beta-(1–6) linkages. It was suggested that the enzyme acts through a processive mechanism until it adds 30–35 Galf units in a single active site. We applied a QM/MM string method coupled with ab initio molecular dynamics simulations to study the two reactions catalyzed by GlfT2. We showed that both reactions proceed very similarly and feature similar transition-state structures. We also present novel information about the ring puckering behavior of the five-membered furanose ring during the glycosyltransferase reaction and a calculated transition-state structure with galactose in a furanose form that may be used as a guide for the rational design of very specific and extremely potent inhibitors, that is, transition-state analogues, for GlfT2. Due to the absence of a furanose form of galactose in humans, transition-state-analogous inhibitors represent an attractive scaffold for the development of novel antibacterial drugs.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Chemistry - A European Journal

ISSN

0947-6539

e-ISSN

—

Volume of the periodical

24

Issue of the periodical within the volume

27

Country of publishing house

DE - GERMANY

Number of pages

9

Pages from-to

7051-7059

UT code for WoS article

000431975000022

EID of the result in the Scopus database

2-s2.0-85046095834