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结球甘蓝雌蕊调控转录因子SPT 基因的克隆
与序列分析
引用本文:杨朴丽,许俊强,刘智宇,王志敏,张丹华,汤青林,宋 明. 结球甘蓝雌蕊调控转录因子SPT 基因的克隆
与序列分析[J]. 中国蔬菜, 2013, 1(20): 24-31
作者姓名:杨朴丽  许俊强  刘智宇  王志敏  张丹华  汤青林  宋 明
作者单位:西南大学园艺园林学院,南方山地园艺学教育部重点实验室,重庆市蔬菜学重点实验室,重庆;400715
基金项目:国家重点基础研究发展计划项目(2012CB113900),国家自然科学基金项目(31000908),重庆市自然科学基金项目
(2011BA1002),中央高校基本科研业务费专项(XDJK2012B020),国家大学生创新项目(201210635045)
摘    要:以结球甘蓝E1 为材料,提取花蕾总RNA,反转录cDNA。根据拟南芥SPT 基因设计引物,
采用同源克隆的方法从中克隆SPT 基因序列1 085 bp,开放阅读框1 062 bp。通过cDNA 推导得到的氨
基酸序列分析表明,BoSPT 编码353 个氨基酸残基,预测分子量为37.67 kD,pI 为6.83。经过EcoRⅠ和
KpnⅠ限制酶双酶切后,构建原核表达质粒pET43.1a-BoSPT 转化表达菌株E. coli Rosetta( DE3),通过
SDS-PAGE 检测该蛋白的表达。经Smart-embl 预测其具有bHLH 家族结构域,位于序列第173~221 位氨
基酸残基处。进化树表明结球甘蓝BoSPT 与拟南芥AtSPT 和筷子芥AlSPT 的亲缘关系较近。BoSPT 基因
的原核表达得到纯化的融合蛋白。

关 键 词:结球甘蓝  雌蕊  SPT  基因克隆  序列分析  

Moclecular Cloning and Sequence Analysis of SPT Gene Transcription Factor
Regulation of Pistil from Cabbage
YANG Pu-Li,XU Jun-Qiang,LIU Zhi-Yu,WANG Zhi-Min,ZHANG Dan-Hua,TANG Qing-Lin,SONG  Ming. Moclecular Cloning and Sequence Analysis of SPT Gene Transcription Factor
Regulation of Pistil from Cabbage[J]. China Vegetables, 2013, 1(20): 24-31
Authors:YANG Pu-Li  XU Jun-Qiang  LIU Zhi-Yu  WANG Zhi-Min  ZHANG Dan-Hua  TANG Qing-Lin  SONG  Ming
Affiliation:College of Horticulture and Landscape Architecture, Southwest University, Key Laboratory of Horticulture Science for;Southern Mountainous Regions, Ministry of Education, Key Laboratory of Olericulture, Chongqing 400715, China
Abstract:Taking cabbage(Brassica oleracea L.) E1 as materials,We extracted total RNA
from capullo,reverse transcribed cDNA. According to SPT gene sequence of Arabidopsis,primers
were designed and 1 085 bp SPT gene with 1 062 bp open reading frame(ORF)was cloned by homology
cloning techniques. The deduced BoSPT protein contained 353 amino acids,with a molecular
weight of 37.67 kD and pI of 6.83. After double enzyme of EcoRI and KpnI restriction enzymes,
and then construct the recombinant plasmids pET43.1a-BoSPT. After transformation to E. coli Rosetta(
DE3),the expression of recombinant proteins were detected via SDS-PAGE. The structural
analysis of BoSPT though Smart-embl showed that it contained bHLH family domain,which located
at the position of 173-221 amino acid residues,The phylogenetic tree indicated that the BoSPT had close genetic relationship with AtSPT and AlSPT. Prokaryotic expression showed that the molecular
mass of BoSPT protein was purified.
Keywords:Cabbage  Pistil  SPT  Moclecular cloning  Sequence analysis  
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