Segura C, Guzmán F, Salazar LM, Patarroyo ME, Orduz S, Lemeshko V. BTM-P1 polycationic peptide biological activity and 3D-dimensional structure.
Biochem Biophys Res Commun 2007;
353:908-14. [PMID:
17207468 DOI:
10.1016/j.bbrc.2006.12.113]
[Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2006] [Accepted: 12/12/2006] [Indexed: 11/15/2022]
Abstract
The novel BTM-P1 peptide interferes with energetic processes in mitochondria; its antimicrobial activity against Gram-positive and Gram-negative bacteria is described here. BTM-P1 three-dimensional structure was determined by 1H NMR to explain its biological mechanisms and membrane activity. Structural data indicated that BTM-P1 can form an alpha-helix; circular dichroism analysis confirmed the peptide's propensity to behave as a typical transmembrane helix in a lipidic environment. According to the structural characteristics of the polycationic BTM-P1 peptide so revealed, its biological activity can be explained by a mechanism involving the formation of ion-permeable channels in biomembranes.
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