学科分类
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5 个结果
  • 简介:InsectshavealargefamilyofC-typelectinsinvolvedincelladhesion,pathogenrecognitionandactivationofimmuneresponses.Inthisstudy,32transcriptsencodingC-typelectindomainproteins(CTLDPs)wereidentifiedfromtheThitarodesxiaojinensistranscriptome.Accordingtotheirdomainstructures,sixCTLDPswithonecarbohydraterecognitiondomain(CRD)wereclassifiedintotheCTL-Ssubfamily.Theother23CTLDPswithtwoCRDsweregroupedintotheimmulectin(IML)subfamily.TheremainingthreewithextraregulatorydomainsweresortedintotheCTL-Xsubfamily.PhylogeneticanalysisshowedthatCTL-SandCTL-Xmembersfromdifferentinsectscouldformorthologousgroups.Incontrast,noT.xiaojinensisIMLorthologueswerefoundinotherinsects.Remarkablelineage-specificexpansioninthissubfamilywasobservedreflectingthattheseCTLDPs,asimportantreceptors,haveevolveddiversifiedmembersinresponsetoavarietyofmicrobes.PredictionofbindingligandsrevealedthatT.xiaojinensis,acoldadaptedspecies,conservedtheabilityofCRDstocombinewithCa^2+tokeepitsreceptorsfromfreezing.ComparativeanalysisofinductionofCTLDPgenesafterdifferentimmunechallengesindicatedthatIMLsmightplaycriticalrolesinimmunedefenses.ThisstudyexaminedT.xiaojinensisCTLDPsandprovidesabasisforfurtherstudiesoftheircharacteristics.

  • 标签: binding ligand carbohydrate-recognition DOMAIN C-type LECTIN
  • 简介:细胞色素P450基因的新奇完整的长度被孤立在杀虫药剂抵抗(命名CYP6CX1v1)并且易受影响(命名CYP6CX1v2)Bemisiatabaci,作为B遗传因子型被识别,福建,中国(Sj)。CYP6CX1(1940bp包含了1557bp开的读框架)对CYP6成员普通的包括的保存领域在carboxyl附近的helix-K,氧绑定主题AGLDPV和保存顺序PEKFNP的通常认为的曲流绑定顺序ETLR和PERF例如heme有约束力的主题PFGEGPRFCIA,结束。有在R和SB之间的氨基酸残余的四不同代替。tabaci(Thr300翼,Thr354Pro,Arg486His和Ile503Thr),在哪个之中替换Ile503Thr位于底层识别地点区域。CYP6CX1v1的mRNA抄写水平象CYP6CX1v2的一样高是2.38褶层。结果显示了从B遗传因子型B的CYP6CX1。在Sj的tabaci是CYP6成员之一,并且提高了CYP6CX1表示和氨基酸残余的代用品可能在域B涉及抵抗机制。tabaci。

  • 标签: 细胞色素P450基因 识别位点 烟粉虱 杀虫剂 氨基酸残基 抗性