Molecular cloning and sequencing of cDNAs encoding insecticidal peptides from the primitive hunting spider, Plectreurys tristis (Simon)

被引:14
作者
Leisy, DJ [1 ]
Mattson, JD [1 ]
Quistad, GB [1 ]
Kramer, SJ [1 ]
VanBeek, N [1 ]
Tsai, LW [1 ]
Enderlin, FE [1 ]
Woodworth, AR [1 ]
Digan, ME [1 ]
机构
[1] SANDOZ AGRO INC,PALO ALTO,CA 94304
关键词
Plectreurys tristis; insecticidal toxins; PCR;
D O I
10.1016/0965-1748(95)00070-4
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Plectreurys tristis cephalothorax mRNA was isolated and amplified by PCR using degenerate primers corresponding to reverse translated mature Plt-VI toxin, An oligonucleotide corresponding to a portion of the amplified product was then used to screen a P. tristis cDNA library, The cDNAs from 10 positive clones were sequenced, Eight of these cDNAs corresponded to Plt-VI toxin, one to Plt-XI toxin, and one was very similar to Plt-VIII toxin, with the exception of a single amino acid substitution. Analysis of these cDNAs indicated that these toxins are initially synthesized as prepro-forms which undergo signal cleavage followed by additional processing at both their N- and C-termini to produce the mature products. Copyright (C) 1996 Elsevier Science Ltd.
引用
收藏
页码:411 / 417
页数:7
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