Direct evidence for DNA bending at the lambda replication origin.
Direct evidence for DNA bending at the lambda replication origin.
复制标题
DNA 在 lambda 复制起点弯曲的直接证据。
DOI:
10.1126/science.2951850
复制
发表时间:
1987
期刊:
影响因子:
--
通讯作者:
Blattner,FR
中科院分区:
文献类型:
--
作者:
Zahn,K;Blattner,FR
Replication initiation in bacteriophage lambda appears to require wrapping of origin DNA on an approximately 50 angstrom radius in or around the complex with the initiator protein O. Since short lengths of DNA are not that flexible, it may be that runs of coherently spaced deoxyadenylate residues constitute bend sites in the ori sequence that facilitate the process. Earlier data showed that ori DNA has electrophoretic anomalies characteristic of bend sites and that these are augmented by initiator protein binding. Here origin bending is examined by direct measurement of the ability of polymerized ori sequences to form small circles. The smallest circles observed (84 residues) are compatible with the required radius of curvature. Bend sites within the O protein binding sites, bend sites in the spacers between them, plus the inherent flexibility of non-bent DNA in the origin may all contribute to origin bending. The data also show that a bend site is required for O protein binding to DNA.
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DOI:
10.1073/pnas.83.12.4109
发表时间:
1986
影响因子:
11.1
作者:
T. Tokino;T. Murotsu;K. Matsubara
通讯作者:
K. Matsubara
影响因子:
5.6
作者:
M. Schnös;R. Inman
通讯作者:
R. Inman
DOI:
10.1016/s0021-9258(18)88903-7
发表时间:
1985
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
J. B. Matthew;D. Ohlendorf
通讯作者:
D. Ohlendorf
DOI:
10.1016/s0021-9258(17)38425-9
发表时间:
1986
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
S. Wickner;K. Zahn
通讯作者:
K. Zahn
影响因子:
5.6
作者:
DREW, HR;TRAVERS, AA
通讯作者:
TRAVERS, AA