xUBF contains a novel dimerization domain essential for RNA polymerase I transcription.
xUBF contains a novel dimerization domain essential for RNA polymerase I transcription.
复制标题
xUBF 包含 RNA 聚合酶 I 转录所必需的新型二聚化结构域。
DOI:
10.1101/gad.5.11.1957
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发表时间:
1991
影响因子:
10.5
通讯作者:
Reeder,RH
中科院分区:
文献类型:
--
作者:
McStay,B;Frazier,MW;Reeder,RH
Xenopus laevis upstream binding factor (xUBF) is an RNA polymerase I transcription factor that is required for formation of the stable initiation complex. The 701-amino-acid protein contains three regions of homology to the chromosomal protein HMG1 (the HMG boxes), which act in comparative independence to cause DNA binding. DNA binding is augmented by a 102-residue amino-terminal domain that causes xUBF to form dimers. The dimerization domain is bipartite in structure, consisting of two regions with the potential to form amphipathic helices, separated by a gap of at least 22 amino acids. The carboxyl half of xUBF is relatively dispensable for transcription (including an 87-residue acidic tail). However, either altering the number of HMG boxes or interfering with dimerization eliminates transcription. The gap region of the dimerization domain is dispensable for dimerization but is absolutely required for transcription. This suggests that the gap region has a critical function in transcription distinct from any effect on dimerization or DNA binding.
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DOI:
--
发表时间:
1991
影响因子:
11.1
作者:
Daniel J. O'Mahony;L. Rothblum
通讯作者:
L. Rothblum
影响因子:
11.4
作者:
KELLY, M;BURKE, J;BEACH, D
通讯作者:
BEACH, D
影响因子:
14.9
作者:
A. Schnapp;J. Clos;W. Hädelt;R. Schreck;A. Cvekl;I. Grummt
通讯作者:
I. Grummt
影响因子:
10.5
作者:
TRAVIS, A;AMSTERDAM, A;GROSSCHEDL, R
通讯作者:
GROSSCHEDL, R
影响因子:
10.5
作者:
McStay,B;Reeder,RH
通讯作者:
Reeder,RH