Polarity of DNA replication through the avian alpha-globin locus

Polarity of DNA replication through the avian alpha-globin locus
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通过禽类 α 珠蛋白基因座进行 DNA 复制的极性

DOI:
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发表时间:
1986
影响因子:
5.3
通讯作者:
M. Leffak
M. Leffak
中科院分区:
生物学2区
文献类型:
--
作者:
C. James;M. Leffak

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为了了解影响真核染色体复制的控制,我们使用径流复制试验来研究基因的活性是否与其上游或下游复制起点的使用有关。当体内启动的DNA聚合酶在溴脱氧尿苷三磷酸存在下完成体外复制时,密度标记优先掺入DNA的起源远端区域。等密度离心和印迹杂交分析的相对溴脱氧尿苷三磷酸掺入片段跨越鸡α-珠蛋白位点表明,该地区是从上游来源复制在鸡淋巴细胞和红细胞。因此,这些基因的复制极性不改变作为转录活性的函数,与早期的建议,在转录方向上的DNA复制可能是一个必要的,但不是充分的条件基因表达一致。
Toward understanding the controls affecting eucaryotic chromosome replication, we used a runoff replication assay to investigate whether the activity of a gene is related to its use of an upstream or downstream replication origin. When in vivo-initiated DNA polymerases are allowed to complete replication in vitro in the presence of bromodeoxyuridine triphosphate the density label is preferentially incorporated into origin-distal regions of DNA. Isopycnic centrifugation and blot hybridization analysis of the relative bromodeoxyuridine triphosphate incorporation into fragments spanning the chicken alpha-globin locus indicate that this region is replicated from an upstream origin both in chicken lymphocytes and in erythrocytes. Thus the replication polarity of these genes does not change as a function of transcriptional activity, consistent with earlier suggestions that DNA replication in the transcriptional direction may be a necessary but not sufficient condition for gene expression.
胞质蛋白在 Friend 红白血病细胞核 DNA 链生长和染色质复制中的作用。
DOI: 10.1016/0005-2787(81)90195-7
发表时间: 1981
期刊: Biochimica et biophysica acta
影响因子: --
作者:
Muller,MT;Kajiwara,K;Mueller,GC
通讯作者: Mueller,GC
DOI: 10.1093/nar/13.7.2413
发表时间: 1985
影响因子: 14.9
作者:
Small,D;Nelkin,B;Vogelstein,B
通讯作者: Vogelstein,B
DOI: 10.1073/pnas.79.13.4083
发表时间: 1982-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子: --
作者:
HEINTZ, NH;HAMLIN, JL
通讯作者: HAMLIN, JL