紫色甘薯渝紫薯7号黄烷酮3-羟化酶基因的克隆和序列分析

为渝紫薯7号品种后续的遗传转化及其分子育种提供理论基础,采用同源克隆和RACE方法对其生物合成途径中关键酶基因进行同源性克隆及生物信息学分析。结果表明:从渝紫薯7号中克隆到F3H基因的全长cDNA序列(Genbank登录号为KU144881),序列全长为1280bp,包括5’端UTR+一个编码368个氨基酸残基的编码区+3’端UTR+polyA尾巴;F3H基因蛋白具有结合酮戊二酸的RXS基序Arg287-Ser285和结合亚铁离子的保守氨基酸His219、Aps221和His277,结构域位于蛋白的核心(Fe^2+被包埋在酶的中心);在GenBank中,渝紫薯7号F3H的序列与圆叶牵牛的F3H...

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Published in西南农业学报 Vol. 29; no. 3; pp. 486 - 490
Main Author 黄元射 舒田 毛景欣 陈敏
Format Journal Article
LanguageChinese
Published 安顺学院农学院,贵州安顺561000 2016
西南大学药学院,重庆400715%贵州省农业科技信息研究所,贵州贵阳,550006%西南大学药学院,重庆,400715
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ISSN1001-4829
DOI10.16213/j.cnki.scjas.2016.03.004

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Summary:为渝紫薯7号品种后续的遗传转化及其分子育种提供理论基础,采用同源克隆和RACE方法对其生物合成途径中关键酶基因进行同源性克隆及生物信息学分析。结果表明:从渝紫薯7号中克隆到F3H基因的全长cDNA序列(Genbank登录号为KU144881),序列全长为1280bp,包括5’端UTR+一个编码368个氨基酸残基的编码区+3’端UTR+polyA尾巴;F3H基因蛋白具有结合酮戊二酸的RXS基序Arg287-Ser285和结合亚铁离子的保守氨基酸His219、Aps221和His277,结构域位于蛋白的核心(Fe^2+被包埋在酶的中心);在GenBank中,渝紫薯7号F3H的序列与圆叶牵牛的F3H序列之间具有很高的相似性,为96%;渝紫薯7号F3H蛋白与近缘物种茑萝氨基酸相似性较高,为94%;渝紫薯7号F3H符合植物中普遍存在的F3H基因,同时具有生物学活性。
Bibliography:Yuzi7 ; F3 H; Gene cloning; Sequence analysis
HUANG Yua-nshe , SHU Tian, MAO Jing-xin , CHEN Min ( 1. College of Agronomy, Anshun University, Guizhou Anshun 561000, China;2. Guizhou Institute of Agricultural Science and Technology Information, Guizhou Guiyang 550006, China;3. College of Pharmacy, Southwest University, Chongqing 400715, China)
51-1213/S
For the purpose of genetic transformation and provides the theoretical foundation of molecular breeding for the subsequent varieties of Yuzi 7, the authors adopted the strategy of homogenous clone and the method of RACE techniques to clone its key enzyme genes in the biosynthetic pathway and analyze it in bioinformatics. Results: The full-length eDNA of flavanone 3-hydrexylase (F3H)was cloned from Yuzi 7, ( GenBank accession number: KU144881 ), the full length of sequence was 1280 bp,including 5' terminal UTR,a coding region which encoded 368 amino acid residues, 3' terminal UTR and a polyA tail; F3H protein has combined with Oxoglutarates to get a RXS motif Arg28
ISSN:1001-4829
DOI:10.16213/j.cnki.scjas.2016.03.004