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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Virtual screening e dinâmica molecular para identificação de inibidores da enzima corismato sintase de Mycobacterium tuberculosis

Rocha, Kelen Beiestorf January 2011 (has links)
Made available in DSpace on 2013-08-07T18:41:45Z (GMT). No. of bitstreams: 1 000431160-Texto+Completo-0.pdf: 3328131 bytes, checksum: 1424b077ac248005607b13af54a688e0 (MD5) Previous issue date: 2011 / The increasing incidence of resistant strains of Mycobacterium tuberculosis, combined with co-infection of the human immunodeficiency virus and the absence of new anti-tuberculosis therapy in recent years highlight the need for discovery of new therapeutic agents for the treatment of tuberculosis. Seeing from previous studies that shikimate pathway of Mycobacterium tuberculosis is essential for survival of the organism, the prediction of inhibitors for chorismate synthase, the seventh enzyme of this route, open up the possibility of development of new anti-mycobacterial chemotherapy. In this work, using computational techniques of molecular modeling, virtual screening, and molecular dynamics, was possible to elucidate the molecular interaction of chorismate synthase with its substrate and cofactor, and propose three potential inhibitors for this enzyme, contributing to early research on compounds with potential anti-tuberculosis. / O aumento da incidência de cepas resistentes de Mycobacterium tuberculosis, aliados a co-infecção com o vírus da imunodeficiência humana e a ausência de novas terapias anti-tuberculose nos últimos anos, evidenciam a necessidade da descoberta de novos agentes terapêuticos para o tratamento da tuberculose. Considerando, a partir estudos anteriores, que a via metabólica do ácido chiquímico do Mycobacterium tuberculosis é essencial para sobrevivência do organismo, a predição de inibidores para corismato sintase, sétima enzima desta rota, abre a possibilidade de desenvolvimento de novas quimioterapias anti-micobacterianas. Neste trabalho, através de técnicas computacionais de modelagem molecular, virtual screening e dinâmica molecular, foi possível elucidar aspectos moleculares importantes da interação da corismato sintase com seu substrato e cofator, bem como, propor três potenciais inibidores para esta enzima, contribuíndo como início de uma pesquisa sobre compostos com potencial farmacológico anti-tuberculose.

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