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Identification of proteins associated with Mycobacterium tuberculosis virulence pathway by their polar profile

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Polanco C., Castañón-González J., Mancilla R., Buhse T., Samaniego J., Gimbel A.

2015

vol. 62

issue 2

191-196

With almost one third of the world population infected, tuberculosis is one of the most devastating diseases worldwide and it is a major threat to any healthcare system. With the mathematical-computational method named "Polarity Index Method", already published by this group, we identified, with high accuracy (70%), proteins related to Mycobacterium tuberculosis bacteria virulence pathway from the Tuberculist Database. The test considered the totality of proteins cataloged in the main domains: fungi, bacteria, and viruses from three databases: Antimicrobial Peptide Database (APD2), Tuberculist Database, Uniprot Database, and four antigens of Mycobacterium tuberculosis: PstS-1, 38-kDa, 19-kDa, and H37Rv ORF. The method described was calibrated with each database to achieve the same performance, showing a high percentage of coincidence in the identification of proteins associated with Mycobacterium tuberculosis bacteria virulence pathway located in the Tuberculist Database, and identifying a polar pattern regardless of the group studied. This method has already been used in the identification of diverse groups of proteins and peptides, showing that it is an effective discriminant. Its metric considers only one physico-chemical property, i.e. polarity.

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1 Acta Biochimica Polonica

1 2015

1 Buhse T.

1 Castañón-González J.

1 Gimbel A.

1 Mancilla R.

1 Polanco C.

1 Samaniego J.

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Identification of proteins associated with Mycobacterium tuberculosis virulence pathway by their polar profile