Inhibition of DNA replication and DNA polymerase alpha activity by monoclonal anti-(DNA polymerase alpha) immunoglobulin G and F(ab) fragments.
Inhibition of DNA replication and DNA polymerase alpha activity by monoclonal anti-(DNA polymerase alpha) immunoglobulin G and F(ab) fragments.
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单克隆抗(DNA 聚合酶 α)免疫球蛋白 G 和 F(ab) 片段抑制 DNA 复制和 DNA 聚合酶 α 活性。
DOI:
10.1021/bi00346a061
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发表时间:
1985
期刊:
影响因子:
2.9
通讯作者:
Ulrich,RG
中科院分区:
文献类型:
--
作者:
Miller,MR;Seighman,C;Ulrich,RG
Department of Biochemistry, West Virginia University Medical School, Morgantown, West Virginia 26506, and Pathology and Toxicology Research, The Upjohn Company, Kalamazoo, Michigan 49001 Received June 13, 1985 abstract: The effect of monoclonal anti-(DNA polymerase a) immunoglobulin G (IgG) and F (ab) fragments on DNA replication in lysolecithin-permeabilized human cells and on DNA polymerase a activity was determined. DNA polymerase a activity in vitro was inhibited equally by the same concentrations of monoclonal IgGs and F (ab) fragments. However, the IgGs and F (ab) fragments were not equally potent in inhibiting DNA replication in permeable cells. In general, the F (ab) fragments were 0-fold more potent than IgGs in inhibiting DNA replication, suggesting the F (ab) fragments cross the nuclear membrane more readily than IgGs. Immunocytochemical studies demonstrated that at least a fraction ofanti-(DNA polymerase a) IgGs entered the nucleus of permeable cells. For most antibodies tested, the IgG or F (ab) concentration needed to inhibit replication was several orders of magnitude higher than that needed to neutralize polymerase a activity extracted from the same number of cells. Anti-(DNA polymerase a) F (ab) fragments were shown to inhibit the discontinuous synthesis of Okazaki DNA, as well as the maturation of Okazaki DNA to larger DNA, thereby implicating DNA polymerase a in both of these processes.
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影响因子:
7.8
作者:
L. Einck;M. Bustin
通讯作者:
M. Bustin
影响因子:
5.6
作者:
B. Tseng;M. Goulian
通讯作者:
M. Goulian
影响因子:
2.9
作者:
M. R. Miller;J. Castellot;A. Pardee
通讯作者:
A. Pardee
DOI:
10.1016/s0021-9258(18)34005-5
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
M. R. Miller;D. N. Chinault
通讯作者:
D. N. Chinault
DOI:
10.1073/pnas.80.22.6735
发表时间:
1983-01-01
期刊:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子:
--
作者:
EINCK, L;BUSTIN, M
通讯作者:
BUSTIN, M