|本期目录/Table of Contents|

[1]王琦琳,牛向丽,刘永胜.玉米两个功能未知转录因子基因的转录后加工[J].应用与环境生物学报,2009,15(04):483-487.[doi:10.3724/SP.J.1145.2009.00483]
 WANG Qilin,NIU Xiangli,LIU Yongsheng.Post-transcriptional Processing of Two Functions of Unknown Transcription Factor Genes in Zea mays[J].Chinese Journal of Applied & Environmental Biology,2009,15(04):483-487.[doi:10.3724/SP.J.1145.2009.00483]
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玉米两个功能未知转录因子基因的转录后加工()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
15卷
期数:
2009年04期
页码:
483-487
栏目:
研究论文
出版日期:
2009-08-25

文章信息/Info

Title:
Post-transcriptional Processing of Two Functions of Unknown Transcription Factor Genes in Zea mays
作者:
王琦琳牛向丽刘永胜
四川大学生命科学学院生物资源与生态环境教育部重点实验室 成都 610064
Author(s):
WANG QilinNIU XiangliLIU Yongsheng
Key Laboratory for Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
关键词:
玉米转录后加工转录因子短正向重复序列
Keywords:
Zea mayspost-transcriptional processingtranscription factorshort-direct repeat
分类号:
Q78 : S513.01
DOI:
10.3724/SP.J.1145.2009.00483
文献标志码:
A
摘要:
ZmBH、ZmWD是玉米中分别具有转录因子bHLH和WD重复蛋白结构的两个功能未知基因,在不同组织中及各种胁迫诱导条件下,这两个基因均发生不同程度的剪接,产生大小各异的转录本. 序列分析发现其剪接方式与经典的mRNA剪接不同,即剪接位点的选择不符合GT-AG或AT-AC规则,而是在剪接位点具有短正向重复序列SDR (Short-direct repeats). ZmBH的转录后加工导致序列发生移码而提前终止,而ZmWD则缺失了大部分结构域序列,经由这种方式产生的转录后加工产物可影响蛋白编码,因而可能是对这两个基因功能进行调控的一种方式. 图6 表1 参18
Abstract:
ZmBH and ZmWD, containing bHLH or WD40-repeat demain, are unknown function transcription factor-like genes in maize. Under different treatments, various transcripts were determined in the two genes. Sequence analyses demonstrated that unlike the classic splicing processes, the splicing sites were neither GT-AG nor AT-AC, but short-direct repeats (SDRs), which present surrounding splicing junctions in the individual splicing events. The unusual post-transcriptional processing led to a premature termination by introducing stop codon in ZmBH, and a deletion of functional domain in ZmWD. Therefore, the majority of the detected transcripts resulting from SDR-mediated post-transcriptional processing might have no capacity to encode functional proteins, suggesting a regulation mechanism of ZmBH and ZmWD. Fig 6, Tab 1, Ref 18

参考文献/References:

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备注/Memo

备注/Memo:
国家自然科学基金项目(No. 30770466)资助
更新日期/Last Update: 2009-08-26