Mycobacterial phenolic glycolipid virulence factor biosynthesis: mechanism and small-molecule inhibition of polyketide chain initiation.
Chem Biol
; 15(1): 51-61, 2008 Jan.
Article
em En
| MEDLINE
| ID: mdl-18158259
ABSTRACT
Phenolic glycolipids (PGLs) are polyketide-derived virulence factors produced by Mycobacterium tuberculosis, M. leprae, and other mycobacterial pathogens. We have combined bioinformatic, genetic, biochemical, and chemical biology approaches to illuminate the mechanism of chain initiation required for assembly of the p-hydroxyphenyl-polyketide moiety of PGLs. Our studies have led to the identification of a stand-alone, didomain initiation module, FadD22, comprised of a p-hydroxybenzoic acid adenylation domain and an aroyl carrier protein domain. FadD22 forms an acyl-S-enzyme covalent intermediate in the p-hydroxyphenyl-polyketide chain assembly line. We also used this information to develop a small-molecule inhibitor of PGL biosynthesis. Overall, these studies provide insights into the biosynthesis of an important group of small-molecule mycobacterial virulence factors and support the feasibility of targeting PGL biosynthesis to develop new drugs to treat mycobacterial infections.
Texto completo:
1
Tema:
Etiologia
/
Geral
Bases de dados:
MEDLINE
Assunto principal:
Fenóis
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Glicolipídeos
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Coenzima A Ligases
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Macrolídeos
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Fatores de Virulência
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Inibidores Enzimáticos
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Mycobacterium tuberculosis
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Chem Biol
Ano de publicação:
2008
Tipo de documento:
Article