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家蚕化学感受蛋白BmCSP4表达谱及结合特性分析
引用本文:邓培渊,乔惠丽,李丹丹,鲁云风,李生才,阚云超.家蚕化学感受蛋白BmCSP4表达谱及结合特性分析[J].昆虫学报,2011,54(8):869-876.
作者姓名:邓培渊  乔惠丽  李丹丹  鲁云风  李生才  阚云超
作者单位:山西农业大学农学院, 山西太谷 030801
基金项目:国家自然科学基金项目(30700070)
摘    要:化学感受蛋白(chemosensory proteins, CSPs)是昆虫体内存在的一类主要识别和运载非挥发性的气味分子和化学刺激物的可溶性蛋白。本研究运用半定量RT-PCR方法分析了BmCSP4的时空及组织表达谱。结果表明: BmCSP4在家蚕Bombyx mori各发育阶段均表达, 但表达量从4龄到蛹期逐渐减少, 且在雌成虫头部、 胸部和腹部表达量较少。用1-NPN作为荧光探针, 测定了15种外源配基与BmCSP4蛋白的结合特性, 结果显示: 仅芳香醛类和芳香酮类化合物在浓度10 μmol/L能将1-NPN从BmCSP4中替换50%, 苯甲醛解离常数为3.20 μmol/L, 对甲氧基苯甲醛解离常数为2.24 μmol/L, 2-戊基-3-苯丙基-烯醛解离常数为2.88 μmol/L, 1-苯基-1-丁酮解离常数为2.04 μmol/L, 苯乙酮解离常数为2.52 μmol/L。据此推测, BmCSP4在不同的发育阶段执行不同的生理功能, 并可能参与对芳香醛、 芳香酮类气味识别过程。

关 键 词:家蚕    化学感受蛋白    半定量RT-PCR    1-NPN    荧光结合  
收稿时间:2011-03-09;

Expression pattern and binding specificity of chemosensory protein BmCSP4 in the silkworm,Bombyx mori
DENG Pei-Yuan,QIAO Hui-Li,LI Dan-Dan,LU Yun-Feng,LI Sheng-Cai,KAN Yun-Chao.Expression pattern and binding specificity of chemosensory protein BmCSP4 in the silkworm,Bombyx mori[J].Acta Entomologica Sinica,2011,54(8):869-876.
Authors:DENG Pei-Yuan  QIAO Hui-Li  LI Dan-Dan  LU Yun-Feng  LI Sheng-Cai  KAN Yun-Chao
Affiliation:DENG Pei-Yuan1,2,QIAO Hui-Li2,LI Dan-Dan2,LU Yun-Feng2,LI Sheng-Cai1,KAN Yun-Chao2,(1. College of Agriculture,Shanxi Agricultural University,Taigu,Shanxi 030801,China,2. China-UK NYNU-RRes Joint Laboratory of Insect Biology,Nanyang,Henan 473061,China)
Abstract:Chemosensory proteins(CSPs) are a class of small soluble proteins in insects,which are supposed to recognize and transport non-volatility odour molecules and chemical stimuli. In this study,we investigated the expression pattern of BmCSP4 using semi-quantitative RT-PCR. The results showed that BmCSP4 was expressed across various developmental stages,with gradual decrease from 4th larva to pupa. The tissue expression profile in males and females at adult stage was further studied,and the results showed that ...
Keywords:Bombyx mori  chemosensory protein  semi-quantitative PCR  N-phenyl-1-naphthylamine  fluorescence binding assay  
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