Sequence characterization and expression patterns of two defensin-like antimicrobial peptides from the tick Haemaphysalis longicornis
文献类型: 外文期刊
第一作者: Zhou, Jinlin
作者: Zhou, Jinlin;Liao, Min;Ueda, Marni;Gong, Haiyan;Xuan, Xuenan;Fujisaki, Kozo
作者机构:
关键词: haemaphysalis longicornis;antimicrobial peptide;expression patterns;sequence characterization
期刊名称:PEPTIDES ( 影响因子:3.75; 五年影响因子:3.389 )
ISSN: 0196-9781
年卷期: 2007 年 28 卷 6 期
页码:
收录情况: SCI
摘要: Two cDNAs encoding defensin-like antimicrobial peptides were cloned and sequenced from the tick Haemaphysalis longicornis. The full-length cDNA of Higut-defensin (H. lorigicornis midgut defensin) is 333 bp, encoding an expected protein with 73 amino acids. The full-length cDNA of Hisal-defensin (H. longicornis salivary gland defensin) is 382 bp, encoding an expected protein with 81 amino acids. The antibacterial activities of the synthetic peptides based on the Hlgut-defensin and Hlsal-defensin sequences were tested against a variety of Gram-positive and Gram-negative bacteria. Using real-time PCR, the tissue-specific expression of two defensin-like peptides were determined and it was also found that the gene transcripts of Hlgut-defensin and Hlsal-defensin were significantly induced by a lipopolysaccharide (LPS) injection. (c) 2007 Elsevier Inc. All rights reserved.
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