The complete sequences of the galago and rabbit beta-globin locus control regions: extended sequence and functional conservation outside the cores of DNase hypersensitive sites.
The complete sequences of the galago and rabbit beta-globin locus control regions: extended sequence and functional conservation outside the cores of DNase hypersensitive sites.
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夜猴和兔 β 珠蛋白基因座控制区的完整序列:DNA 酶超敏位点核心外的扩展序列和功能保守性。
DOI:
10.1006/geno.1996.4458
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发表时间:
1997
期刊:
影响因子:
--
通讯作者:
Hardison,R
中科院分区:
文献类型:
--
作者:
Slightom,JL;Bock,JH;Tagle,DA;Gumucio,DL;Goodman,M;Stojanovic,N;Jackson,J;Miller,W;Hardison,R
The locus control region (LCR) of mammalian β-globin genes covers at least 17 kb at the 5′ end of the gene cluster and has been implicated in chromatin domain opening, enhancement, and insulation from neighboring sequences. Functional dissection of the LCR has defined the minimal cores for four of the five major DNase hypersensitive sites (HSs) that mark this regulatory region. To examine fully the patterns of conserved sequences in the mammalian homologs to the β-globin LCR, we determined the complete DNA sequence of the galago β-globin LCR and completed previously unsequenced regions of the rabbit LCR. Simultaneous alignment of these sequences with the human, goat, and mouse LCRs revealed conserved sequences (phylogenetic footprints) detected using three largely independent methods. The most highly conserved segments are found both within the HS cores and in some but not all regions flanking the cores. These results argue for an extended pattern of well-conserved sequences, many of which lie outside the minimal cores, and we show that a key sequence required for domain opening by the region including HS3 maps about 1 kb 5′ to the minimal core. Differential phylogenetic footprints, containing sequences conserved in nonhuman mammals but not in humans, are found primarily around HS3, consistent with some species-specific differences in function that may be important for differences in hemoglobin switching during development.
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影响因子:
--
作者:
G. Stormo
通讯作者:
G. Stormo
DOI:
--
发表时间:
1993
期刊:
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
影响因子:
--
作者:
F. Grosveld;M. Antoniou;M. Berry;E. de Boer;N. Dillon;J. Ellis;P. Fraser;O. Hanscombe;J. Hurst;A. Imam
通讯作者:
A. Imam
影响因子:
3.5
作者:
Jinghua Yu;J. H. Bock;J. Slightom;B. Villeponteau
通讯作者:
B. Villeponteau
DOI:
10.1073/pnas.87.19.7693
发表时间:
1990
影响因子:
11.1
作者:
Moon,AM;Ley,TJ
通讯作者:
Ley,TJ
DOI:
--
发表时间:
1991
期刊:
影响因子:
--
作者:
Qiliang Li;Qiliang Li;B. Zhou;P. Powers;T. Enver;G. Stamatoyannopoulos
通讯作者:
G. Stamatoyannopoulos