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:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Blattner,FR
Blattner,FR
中科院分区:
--
文献类型:
--
作者:
Zahn,K;Blattner,FR

文献摘要

参考文献

被引文献

相似文献

λ噬菌体中的复制起始似乎需要将起始DNA包裹在具有起始蛋白O的复合物中或周围约50埃半径上。由于短的DNA没有那么灵活,所以可能是连续间隔的脱氧腺苷酸残基构成了ori序列中的弯曲位点,促进了这一过程。早期的数据表明,ori DNA具有弯曲位点的电泳异常特征,并且这些特征通过起始蛋白结合而增强。在这里,原点弯曲是通过直接测量聚合的ori序列形成小圆圈的能力来检查的。观察到的最小圆(84个残基)与所需的曲率半径一致。O蛋白结合位点内的弯曲位点、它们之间的间隔区中的弯曲位点,加上原点中非弯曲DNA的固有柔性,都可能有助于原点弯曲。数据还表明O蛋白与DNA结合需要一个弯曲位点。
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.
质粒自主复制控制所需的 mini-F 质粒编码的 E 蛋白的纯化和特性。
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
复制 λ DNA 时分支点的位置
DOI: 10.1016/0022-2836(70)90270-6
发表时间: 1970
影响因子: 5.6
作者:
M. Schnös;R. Inman
通讯作者: R. Inman
DNA 结合蛋白使 DNA 发生静电变形。
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
DOI: 10.1016/0022-2836(85)90396-1
发表时间: 1985-12-20
影响因子: 5.6
作者:
DREW, HR;TRAVERS, AA
通讯作者: TRAVERS, AA