On the nature of folic-acid-sensitive fragile sites in human chromosomes: an hypothesis.
On the nature of folic-acid-sensitive fragile sites in human chromosomes: an hypothesis.
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关于人类染色体中叶酸敏感脆弱位点的性质:一个假设。
DOI:
10.1002/ajmg.1320160105
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发表时间:
1983
期刊:
影响因子:
--
通讯作者:
Howard-Peebles,PN
中科院分区:
文献类型:
--
作者:
Krumdieck,CL;Howard-Peebles,PN
The methyl groups of thymine and 5‐methylcytosine exposed along the major groove of the DNA double helix are involved in the binding of specific proteins to specific DNA regions. It is hypothesized that folate‐sensitive fragile sites on chromosomes appear as a result of heritable defects of DNA methylation along a region normally binding a folding protein involved in chromosome condensation. Impairment of DNA‐folding‐protein interaction would result. A superimposed folate deficiency, or any condition leading to impaired thymidylate biosynthesis, would promote misincorporation into DNA of uracil in place of thymine, thus producing a further loss of methyl groups at the fragile site and eventually precluding a full DNA‐folding‐protein interaction. A localized collapse of the chromosome structure would follow.
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DOI:
10.1073/pnas.78.2.917
发表时间:
1981
影响因子:
11.1
作者:
Sedwick,WD;Kutler,M;Brown,OE
通讯作者:
Brown,OE
DOI:
10.1056/nejm198111053051918
发表时间:
1981
期刊:
The New England journal of medicine
影响因子:
--
作者:
L. Luzzatto;A. Falusi;E. A. Joju
通讯作者:
E. A. Joju
影响因子:
6.5
作者:
K. Das;V. Herbert
通讯作者:
V. Herbert
影响因子:
64.8
作者:
D. Comings;A. Riggs
通讯作者:
A. Riggs
影响因子:
64.8
作者:
JOHNSON, MH
通讯作者:
JOHNSON, MH