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Cloning, expression and localization of a trypsin-like serine protease in the spruce budworm, Choristoneura fumiferana 被引量:3
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作者 Wen-Ying He Yi-Ping Zheng +5 位作者 Lin Tang Si-Chun Zheng Catherine Beliveau daniel doucet Michel Cusson Qi-Li Feng 《Insect Science》 SCIE CAS CSCD 2009年第6期455-464,共10页
A trypsin-like molting-related serine protease cDNA (CfMRSP) was cloned from the spruce budworm, Choristoneurafumiferana. The full-length CfMRSP complementary DNA (cDNA) encoded a 43 kDa protein that contained a t... A trypsin-like molting-related serine protease cDNA (CfMRSP) was cloned from the spruce budworm, Choristoneurafumiferana. The full-length CfMRSP complementary DNA (cDNA) encoded a 43 kDa protein that contained a trypsin-like serine protease catalytic domain, but no clip domain. The C-terminal extension contained five cystein residues, which may allow the protein to form a homodimer through interchain disulfide bonds and regulate the activity of CfMRSE Phylogenetic tree analysis showed that CfMRSP clusters with lepidopteran homologues such as serine protease 1 of Lonomia obliqua, hemolymph proteinase 20 (HP20), pattern recognition serine proteinase precursor (ProHP14) and a trypsin-like protein ofManduca sexta. Northern blot analysis of developmental expression of CfMRSP indicated that its transcripts were found primarily in the epidermis and were produced during all of the tested stadia, from 4th instar larvae to pupae, but increased levels of CfMRSP transcripts were always found after each molt. A high level of the protein was found in the epidermis by immunohistochemistry analysis. Altogether these data suggest that CfMRSP plays a role in the epidermis during molting and metamorphosis. 展开更多
关键词 Choristoneurafumiferana cuticle METAMORPHOSIS MOLT serine protease
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