Evidence for DNA Translocation by the ISWI Chromatin-Remodeling Enzyme
Evidence for DNA Translocation by the ISWI Chromatin-Remodeling Enzyme
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ISWI 染色质重塑酶 DNA 易位的证据
DOI:
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发表时间:
2003
影响因子:
5.3
通讯作者:
T. Owen
中科院分区:
文献类型:
--
作者:
I. Whitehouse;Chris Stockdale;A. Flaus;M. Szczelkun;T. Owen
ABSTRACT The ISWI proteins form the catalytic core of a subset of ATP-dependent chromatin-remodeling activities. Here, we studied the interaction of the ISWI protein with nucleosomal substrates. We found that the ability of nucleic acids to bind and stimulate the ATPase activity of ISWI depends on length. We also found that ISWI is able to displace triplex-forming oligonucleotides efficiently when they are introduced at sites close to a nucleosome but successively less efficiently 30 to 60 bp from its edge. The ability of ISWI to direct triplex displacement was specifically impeded by the introduction of 5- or 10-bp gaps in the 3′-5′ strand between the triplex and the nucleosome. In combination, these observations suggest that ISWI is a 3′-5′-strand-specific, ATP-dependent DNA translocase that may be capable of forcing DNA over the surface of nucleosomes.
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影响因子:
3.1
作者:
Maine,IP;Kodadek,T
通讯作者:
Kodadek,T
影响因子:
2.9
作者:
WINTER, RB;VONHIPPEL, PH
通讯作者:
VONHIPPEL, PH
影响因子:
56.9
作者:
COTE, J;QUINN, J;PETERSON, CL
通讯作者:
PETERSON, CL
影响因子:
14.9
作者:
EISEN, JA;SWEDER, KS;HANAWALT, PC
通讯作者:
HANAWALT, PC
影响因子:
2.9
作者:
BERG, OG;WINTER, RB;VONHIPPEL, PH
通讯作者:
VONHIPPEL, PH