中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
酵母内含子在基因序列中的分布对基因转录效率的影响

文献类型:期刊论文

作者张静[*]1,2; 石秀凡3; 杨恒芬1
刊名生物化学与生物物理进展
出版日期2003
卷号30期号:6页码:945-949
关键词酵母 基因转录频率 内含子长度 内含子位置
ISSN号1000-2382
其他题名Transcription Rates of Yeast Genes Are Influenced by The Distribution of Introns
通讯作者zhangjing@ynu.edu.cn
合作状况其它
中文摘要对酵母中高效转录和低效转录基因内含子序列寡核苷酸使用情况的对照分析 ,显示两类内含子的序列结构有差异 ,并且高效转录基因内含子序列含有较多潜在的转录因子结合位点 ,由此推测内含子可能参与基因转录的调控 .这个结论有待更多的数据证实 .对内含子和外显子在两组基因序列中的分布 (长度、位置等 )进行详细比较分析后显示 ,高效转录基因内含子和低效转录基因内含子的长度有比较明显的界限 .两组基因中外显子长度的均值虽然有些差异 ,却没有明显的界限 .基因序列长度与外显子长度的情况相似 .虽然内含子的相对位置在两类基因中都很靠近 5′端 ,但是从实际位置看 ,高效转录基因中比较多的内含子很靠近基因的 5′端 ,有些则位于 5′ UTR区域 .这些结果提示 ,基因的转录效率与内含子的长度有关 ,与外显子及基因序列的长度无关 ,内含子的位置也可能影响转录效率 ,内含子对基因转录的调控可能与基因上游的转录调控有关联 ,或者是上游调控的延续.
英文摘要A comparative analysis on the intron sequence oligonucleotide usages in two sets of yeast genes with higher and lower transcription frequencies , respectively , has shown that the intron sequence structures of the two sets of genes are different. There are more potential binding sites for transcription factors in the introns of the genes with high transcription frequencies. So it is speculated that introns regulate the transcription of genes. But more evidences are needed to favor this speculation. The detailed comparative analyses on the distribution (length and position) of introns and exons in the two sets of gene sequences also show that there is an obvious boundary between the lengths of the two sets of introns. There is no boundary between the lengths of the two sets of exons , although the means of their lengths are of discrepancy. The situation of the gene lengths (length of intron and exon) is similar to exon lengths. As far as the relative position , the introns in two sets of genes all have a bias toward the 5 ′ ends of genes. But as the actual position is considered , more introns in high transcription genes have a tendency to be located toward the 5 ′ ends of genes , some even located at 5 ′2 UTR. These results suggest that the gene transcription rates are related to the length of intron , but not to the lengths of exons and genes sequences. The positions of introns may also influence the transcription rates. The transcriptional regulation of introns may be correlative with the transcriptional regulation of the upstream of genes , or be its continuous action.
资助信息国家自然科学基金资助项目( 30 36 0 0 27);云南大学理 (工 )科校级科研项目资助 ( 2 0 0 2T0 0 9XX ).
原文出处2003306945.pdf
语种中文
公开日期2010-08-24
源URL[http://159.226.149.42:8088/handle/152453/3935]  
专题昆明动物研究所_其他
昆明动物研究所_细胞与分子进化重点实验室
作者单位1.云南大学应用统计中心,昆明650091
2.云南财贸学院计算机科学系,昆明650221
3.中国科学院昆明动物研究所,中国科学院细胞与分子进化重点实验室,昆明650223
推荐引用方式
GB/T 7714
张静[*],石秀凡,杨恒芬. 酵母内含子在基因序列中的分布对基因转录效率的影响[J]. 生物化学与生物物理进展,2003,30(6):945-949.
APA 张静[*],石秀凡,&杨恒芬.(2003).酵母内含子在基因序列中的分布对基因转录效率的影响.生物化学与生物物理进展,30(6),945-949.
MLA 张静[*],et al."酵母内含子在基因序列中的分布对基因转录效率的影响".生物化学与生物物理进展 30.6(2003):945-949.

入库方式: OAI收割

来源:昆明动物研究所

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