The DNA binding arm of lambda repressor: critical contacts from a flexible region.
The DNA binding arm of lambda repressor: critical contacts from a flexible region.
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lambda 阻遏物的 DNA 结合臂:来自柔性区域的关键接触。
DOI:
10.1126/science.254.5029.267
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发表时间:
1991
期刊:
影响因子:
--
通讯作者:
Pabo,CO
中科院分区:
文献类型:
--
作者:
Clarke,ND;Beamer,LJ;Goldberg,HR;Berkower,C;Pabo,CO
Segments of protein that do not adopt a well-ordered conformation in the absence of DNA can still contribute to site-specific recognition of DNA. The first six residues (NH2-Ser1-Thr2-Lys3-Lys4-Lys5-Pro6-) of phage lambda repressor are flexible but are important for site-specific binding. Low-temperature x-ray crystallography and codondirected saturation mutagenesis were used to study the role of this segment. All of the functional sequences have the form [X]1-[X]2-[Lys or Arg]3-[Lys]4-[Lys or Arg]5-[X]6. A high-resolution (1.8 angstrom) crystal structure shows that Lys3 and Lys4 each make multiple hydrogen bonds with guanines and that Lys5 interacts with the phosphate backbone. The symmetry of the complex breaks down near the center of the site, and these results suggest a revision in the traditional alignment of the six lambda operator sites.
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影响因子:
64.8
作者:
C. Pabo;W. Krovatin;A. Jeffrey;R. Sauer
通讯作者:
R. Sauer
影响因子:
64.5
作者:
A. Hochschild;J. Douhan;M. Ptashne
通讯作者:
M. Ptashne
影响因子:
64.8
作者:
C. Pabo;M. Lewis
通讯作者:
M. Lewis
影响因子:
5.6
作者:
MEYER, BJ;MAURER, R;PTASHNE, M
通讯作者:
PTASHNE, M
影响因子:
64.8
作者:
R. Sauer;C. Pabo;B. Meyer;M. Ptashne;K. Backman
通讯作者:
K. Backman