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Contenu archivé le 2024-05-27

Cytochromes p450 as drug targets against mycobacterium tuberculosis and mycobacterium leprae.

Objectif

Mycobacterium tuberculosis (Mtb) is the biggest killer among infectious diseases. Multi-drug resistant strains are widespread. New antibiotic strategies are desperately needed to combat the deadly pathogen. The genome sequence of Mtb revealed that Mtb encodes a high number (~20) of cytochromes P450 (P450s). These enzymes have roles in sterol, lipid and and polyketide metabolism in the cell. The recent determination of the genome sequence of the leprosy pathogen (M. leprae) indicates a much smaller number of proteins encoded, with only a single P450 remaining. The remaining P450 is likely to be essential for bacterial viability. Azole drugs which inhibit activity of P450 enzymes also exhibit potent anti-mycobacterial effects. This suggests that azoles may be useful new drugs against these deadly pathogens. The major objectives of this proposal are the systematic study of the sole M. leprae P450 and its homologue in M. tuberculosis. This will involve protein expression and purification of the P450s, and detailed kinetic, spectroscopic and structural analysis of these enzymes. The substrate selectivity will be determined by spectral titrations and lipid analysis, and activity will be reconstituted with expressed redox partners. Azoles interactions will be also be examined. Collectively, these studies will allow fundamental understanding of these P450s' properties and their potential as drug targets.

Champ scientifique (EuroSciVoc)

Programme(s)

Thème(s)

Données non disponibles

Appel à propositions

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Régime de financement

RGI - Research grants (individual fellowships)

Coordinateur

UNIVERSITY OF LEICESTER
Contribution de l’UE
Aucune donnée
Adresse
The Adrian Building, University Road
LE1 7RH LEICESTER
Royaume-Uni
Coût total
Aucune donnée