期刊
GENE
卷 509, 期 2, 页码 258-262出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.gene.2012.08.013
关键词
Defensin; Tupaia belangeri; Antimicrobial activity; Hemolitic activity
资金
- Chinese Academy of Sciences [KSCX2-EW-R-11, KSCX2-EW-J-23]
- Ministry of Science and Technology [2010CB529800]
- Key Laboratory of Animal Models and Human Disease Mechanisms, Chinese Academy of Sciences
A novel beta-defensin 1-like antimicrobial peptide (beta-defensin 1TB) containing 36 amino acid residues was purified and characterized from the serum of the tree shrew, Tupaia belangeri. Its amino acid sequence was determined as DHYLCVKNEGICLYSSCPSYTKIEGTCYGGKAKCCK, by Edman degradation, mass spectrometry analysis, and cDNA cloning. Evolution analysis indicated that beta-defensin 1TB showed maximal similarity to the beta-defensin 1 identified from cotton-top tamarin, Saguinus oedipus. beta-defensin 1TB exerted potential antimicrobial activities against wide spectrum of microorganisms including Gram-negative and -positive bacteria and fungi. It showed little hemolitic activity to human or rabbit red cells. To the best of our knowledge, this is the first report of antimicrobial peptide from Tupaiidae. (C) 2012 Elsevier B.V. All rights reserved.
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