Sequence definition and organization of a human repeated DNA.

Sequence definition and organization of a human repeated DNA.
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人类重复 DNA 的序列定义和组织。

DOI:
10.1016/0022-2836(80)90277-6
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发表时间:
1980
影响因子:
5.6
通讯作者:
Manuelidis,L
Manuelidis,L
中科院分区:
生物学2区
文献类型:
--
作者:
Wu,JC;Manuelidis,L

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相似文献

提供了DNA重复序列的DNA序列数据,该DNA重复序列主要存在于特定人类染色体的着丝粒中。该序列由两个串联的169和171个碱基对单位组成,它们彼此之间有27%的碱基变异。相反,二聚体在更长的串联重复序列中被更忠实地复制,例如测序的680碱基对四聚体。在四聚体的主序列中,与完整的二聚体相比,碱基只有1%的变化。这个序列的形成至少需要两个步骤,包括人类基因组中一个相关家族的两个170个碱基对变异单位的串联二聚体的进化,以及后来这个二聚体的突变或扩增。没有证据表明这些序列包含或进化出更简单的6到20个碱基对重复序列,也没有发现与已知更简单的人类卫星的同源性。在回顾和比较关于重复DNA的文献中,似乎全长和串联重复是将这些序列定义为一类及其特殊的着丝粒功能和更高的染色体顺序的关键特征,而不是单个单位重复长度或二级结构潜力。讨论了这样的序列产生于至少几个物种共有的散布序列储集库的可能性。
DNA sequence data for a DNA repeated sequence, found largely in centromeres of specific human chromosomes is presented. The sequence consists of two tandem 169 and 171 base-pair units that show 27% base variation with each other. In contrast the dimer is more faithfully copied in longer tandem repeats, such as the sequenced 680 base-pair tetramer. In the major sequence of the tetramer, base variation of the order of only 1%, in comparison to the complete dimer is seen. A minimum of two steps in the formation of this sequence is proposed, consisting of evolution of a tandem dimer of two 170 base-pair variant units of a related family within the human genome, and later saltation or amplification of this dimer. No evidence that these sequences contained or evolved from a simpler 6 to 20 base-pair repeat was found, and no homology with known simpler human satellites could be discerned. In reviewing and comparing the literature on repeated DNAs it appears that overall length and tandem repetition are the critical features, rather than individual unit repeat length or secondary structural potential, in defining these sequences as a class and their special centromeric functions and higher chromosome order. The possibility that such sequences arise from a reservoir of interspersed sequences that are common to at least several species is discussed.
非洲绿猴基因组和染色质中高度重复的 DNA 序列的排列。
DOI: 10.1016/s0021-9258(18)50624-4
发表时间: 1979
期刊: The Journal of biological chemistry
影响因子: --
作者:
D. Singer
通讯作者: D. Singer
姬鼠相关基因组中序列的保守性:卫星 DNA 序列维护的限制。
DOI: 10.1093/nar/6.7.2423
发表时间: 1979
影响因子: 14.9
作者:
S. Brown;G. Dover
通讯作者: G. Dover
DOI: 10.1126/science.205944
发表时间: 1978-01-01
期刊: SCIENCE
影响因子: 56.9
作者:
ROSENBERG, H;SINGER, M;ROSENBERG, M
通讯作者: ROSENBERG, M
DNA 核苷酸序列的直接测定:噬菌体 phiX172 DNA 片段的结构。
DOI: 10.1016/0022-2836(74)90093-x
发表时间: 1974
影响因子: 5.6
作者:
F. Galibert;J. Sedat;E. Ziff
通讯作者: E. Ziff
DOI: 10.1093/jnci/56.1.43
发表时间: 1976
期刊: Journal of the National Cancer Institute
影响因子: --
作者:
L. Manuelidis;E. E. Manuelidis
通讯作者: E. E. Manuelidis