Chromatin-associated periodicity in genetic variation downstream of transcriptional start sites.

Chromatin-associated periodicity in genetic variation downstream of transcriptional start sites.
复制标题

DOI:
10.1126/science.1163183
复制
发表时间:
2009-01-16
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Morishita S
Morishita S
中科院分区:
其他
文献类型:
--
作者:
Sasaki S;Mello CC;Shimada A;Nakatani Y;Hashimoto S;Ogawa M;Matsushima K;Gu SG;Kasahara M;Ahsan B;Sasaki A;Saito T;Suzuki Y;Sugano S;Kohara Y;Takeda H;Fire A;Morishita S

文献摘要

参考文献

被引文献

相似文献

DNA序列变异是否反映了种系的遗传活性和潜在的染色质结构?使用两种青鳉(日本鳉,Oryzias latipes),我们比较了基因组序列,并绘制了青鳉Hd-RR囊胚的~ 3730万个核小体核心,以及6个胚胎阶段的11,654个代表性转录起始位点。我们观察到转录起始位点下游约200-bp的周期性遗传变异模式;大于1bp的插入和缺失率在大约+200、+400和+600bp的位置达到峰值,而点突变率则显示相应的谷值。这种~200-bp的周期性与染色质结构相关,在0、+200、+400和+600 bp的位置核小体占据最小。这些数据证实了遗传活性(转录)和染色质结构在进化时间尺度上塑造DNA序列的潜力。
Might DNA sequence variation reflect germline genetic activity and underlying chromatin structure? Using two strains of medaka (Japanese killifish, Oryzias latipes), we compared genomic sequence and mapped ~37.3 million nucleosome cores from medaka Hd-rR blastulae, together with 11,654 representative transcription start sites from six embryonic stages. We observed a ~200-bp periodic pattern of genetic variation downstream of transcription start sites; the rate of insertions and deletions longer than 1bp peaked at positions approximately +200, +400, and +600bp, while the point mutation rate showed corresponding valleys. This ~200-bp periodicity was correlated with the chromatin structure, with nucleosome occupancy minimized at positions 0, +200, +400, and +600bp. These data exemplify the potential for genetic activity (transcription) and chromatin structure to contribute in molding the DNA sequence on an evolutionary timescale.
DOI: 10.1186/1471-2148-7-72
发表时间: 2007-05-09
影响因子: 3.4
作者:
Prendergast JG;Campbell H;Gilbert N;Dunlop MG;Bickmore WA;Semple CA
通讯作者: Semple CA
DOI: 10.1038/ng1878
发表时间: 2006-10-01
期刊: NATURE GENETICS
影响因子: 30.8
作者:
Ioshikhes, Ilya P.;Albert, Istvan;Pugh, B. Franklin
通讯作者: Pugh, B. Franklin
DOI: 10.1038/nature06391
发表时间: 2007-12-13
期刊: NATURE
影响因子: 64.8
作者:
Whitehouse, Iestyn;Rando, Oliver J.;Tsukiyama, Toshio
通讯作者: Tsukiyama, Toshio
DOI: 10.1126/science.272.5258.107
发表时间: 1996-04-05
期刊: SCIENCE
影响因子: 56.9
作者:
Francino, MP;Chao, L;Ochman, H
通讯作者: Ochman, H
DOI: 10.1038/nature05846
发表时间: 2007-06-07
期刊: NATURE
影响因子: 64.8
作者:
Kasahara, Masahiro;Naruse, Kiyoshi;Kohara, Yuji
通讯作者: Kohara, Yuji