Characterization of Hlcyst-3 as a member of cystatins 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;Fujisaki, Kozo;Zhou, Jinlin;Gong, Haiyan;Xuan, Xuenan;Fujisaki, Kozo
作者机构:
关键词: Haemaphysalis longicornis;Cystatin;Hlcyst-3
期刊名称:EXPERIMENTAL AND APPLIED ACAROLOGY ( 影响因子:2.132; 五年影响因子:2.196 )
ISSN: 0168-8162
年卷期: 2010 年 51 卷 4 期
页码:
收录情况: SCI
摘要: The gene encoding cystatin from the tick Haemaphysalis longicornis has been reported previously. In the study reported here, we characterized a member of cystatins and designated it as Hlcyst-3 (H. longicornis cystatin-3). Its full-length cDNA is 602 bp, and it encodes a putative 129 amino acid protein with an obvious signal peptide. Sequence analysis revealed that it has significant homology with the known secreted cystatin. The recombinant protein was expressed in a GST-fused soluble form in Escherichia coli and was purified by affinity chromatography. The inhibitory activity of the recombinant protein against papain and cathepsin L was identified by fluorogenic substrate analysis. Real-time PCR revealed that Hlcyst-3 was mostly expressed in the tick midgut.
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