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1 个结果
  • 简介:Twostarch-branchingenzyme(SBE)inrice,isknowntobeakeyenzymeinamylopectinbiosynthesis.ThecDNAoftwoSBE(starch-branchingenzyme)genesSheIandShedencodingSBEⅠandSBEⅢ(twomajorisoformsinrice)wereclonedbyanimprovedRT-PCRtechnique,fromatemplatecDNAlibray,derivedfromthetotalmRNAsextractedfromtheimmatureseedsofajaponicariceWuyunjing7.DNAsequenceanalysisshowedthatthesizeoftheclonedSheIandShedcDNAswere2490and2481bplong,respectively,includingtheirentirecodingsequences.ComparisonanalysisindicatedthatthenucleotidesequenceofShe3wasthesameasthatofshed(GenbankAccessionNo.D16201)asreportedpreviously.Therewereonlyfourbase-pairsdifference,whichresultedinchangesoftwodeducedaminoacidsbetweentheclonedShe1cDNAandthereportedshe1(GenbankAccessionNo.D11082).TheclonedSheIandShedcDNAsmakeitpossibletoimprovericestarchqualitythroughgeneticengineering.

  • 标签: 水稻 淀粉分支酶 基因 克隆 序列分析 CDNA