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时间:2020-04-18
《红花菜豆黄烷酮-3-羟化酶基因电子克隆及序列分析-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、现代食品科技ModernFoodScienceandTechnology2014,Vo1.30,No.4InSilicoCloningandSequenceAnalysisofF3HGeneinPhaseoluscoccineusMAGuang,GUOJi-ping(DepartmentofLifeSciences,HengshuiCollege,Hengshui053000,China)Abstract:Flavanone3-hydroxylaseisakeyenzymeinthebiosyntheticpat
2、hwayofplantflavonoids.TheputativecDNAsequenceofPhaseoluscoccineusF3HgenewasinsilicoclonedbyusingGlycinemaxF3HgenecDNAsequence(AAU06216.1)asaprobe.AccordingtotheputativecDNA,theprimersweredesignedforRT-PCR.ThecodingsequenceofF3HgeneinPhaseoluscoccineuscDNAwasc
3、lonedusingRT-PCR.ThenthesecondaryslructureandadvancedstructureofF3HinPhaseoluscoccineuswereanalyzedbybioinformaticsmethods.TheresultsshowedthatthecDNAcontainsanopenreadingframeof1128bp,whichencodedtheproteincontaining375aminoacids.TheproteincodedbyPhaseo/usco
4、ccineusF3HgenecDNAshowed92%similaritytoGlycinemax.Itssecondarystructurecontained40.8%a-helix.14.93%extendedstrand,39.73%randomcoiland4.53%f~-tum.Thehomologyanalysisofthree—dimensionalstructureshowedthatthethree-dimensionalstructureoftheproteinwasacompactglobu
5、larstructure.Keywords:flavanone3-hydroxylase;three—dimensionalstructure;sequenceanalysis;RT-PCR;bioinformaticsArticleNo.:1673·9078(2014)4—6-9红花菜豆黄烷]~-3-羟化酶基因电子克隆及序列分析马光,郭继平(衡水学院生命科学系,河北衡水053000)摘要:黄烷酮.3.羟化酶(F3H)是植物类黄酮物质生物合成途径中的一个关键酶。本文利用电子克隆的方法,采用已经报道的大豆F3H基因
6、cDNA序列为种子序列,搜索红花菜豆EST数据库,获得了假定的红花菜豆F3H基因cDNA的序列。根据假定的cDNA序列设计引物,采用RT-PCR的方法获得了红花菜豆F3H基因cDNA的编码序列。并采用生物信息工具对红花菜豆F3H的性质包括氨基酸序列组成、物理和化学性质、二级和三级结构的特点进行了研究。结果表明,红花莱豆F3H基因cDNA包含一个1128bp的完整的开放读码框,其编码蛋白由375个氨基酸组成。与大豆黄烷酮。3一羟化酶同源性为92%。其二级结构含有40.8%0【螺旋和39.73%无规则卷曲,B折叠较少
7、为4.53%。采用同源模建的方式分析其三维立体结构,表明其三维结构是一个紧密的球状结构。关键词:黄烷酮.3.羟化酶;三维结构;序列分析;RT-PCR;生物信息学Later,morecharacteristicsofF3Hgeneindiferent1Introductionspecieswerereported,suchasbarley,begonia,alfalfa,maize,thaleCressandperillat3JFlavanone3-hydroxylase(F3H;EC1.14.11.9)isa.H
8、owever,theexpressionkeyenzymeofflavonoidinplants.ItcatalyzescharacteristicsofF3Harediferentindiversespecies.Inhydroxyl~ionofC—ringthirdpositionhydroxylcatalyticpetuniaandsnapdragon,regula
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