Biosynthesis of the arabinogalactan-peptidoglycan complex of Mycobacterium tuberculosis

The compositional complexity of the mycobacterial cell envelope differentiates Mycobacterium species from most other prokaryotes. Historically, research in this area has focused on the elucidation of the structure of the mycobacterial cell envelope with the result that the structures of the mycolic...

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Bibliographic Details
Published in:Glycobiology (Oxford) 2001-09, Vol.11 (9), p.107R-118R
Main Authors: Crick, D C, Mahapatra, S, Brennan, P J
Format: Article
Language:English
Subjects:
Carbohydrate Conformation
Galactans - biosynthesis
Mycobacterium tuberculosis
Mycobacterium tuberculosis - metabolism
Peptidoglycan - biosynthesis
Peptidoglycan - chemistry
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Summary:The compositional complexity of the mycobacterial cell envelope differentiates Mycobacterium species from most other prokaryotes. Historically, research in this area has focused on the elucidation of the structure of the mycobacterial cell envelope with the result that the structures of the mycolic acid-arabinogalactan-peptidoglycan complex from M. tuberculosis are fairly well understood. However, the current impetus for studying M. tuberculosis and other pathogenic mycobacteria is the need to identify targets for the development of new drugs. Therefore, emphasis has been shifting to the study of cell envelope biosynthesis and the identification of enzymes that are essential to the viability of M. tuberculosis. The publication of the complete M. tuberculosis genome in 1998 has greatly aided these studies. To date, thirteen enzymes involved in the synthesis of the arabinogalactan-peptidoglycan complex of M. tuberculosis have been identified and at least partially characterized. Eleven of these enzymes were reported subsequent to the publication of the M. tuberculosis genome, a clear indication of the rapid evolution of knowledge stimulated by the sequencing of the genome. In this article we review the current understanding of M. tuberculosis arabinogalactan-peptidoglycan structure and biosynthesis.
ISSN:0959-6658
1460-2423
DOI:10.1093/glycob/11.9.107r