THE RNA-POLYMERASE-II CARBOXY-TERMINAL DOMAIN - LINKS TO A BIGGER AND BETTER HOLOENZYME

被引:19
作者
EMILI, A [1 ]
INGLES, CJ [1 ]
机构
[1] UNIV TORONTO, CHARLES H BEST INST, DEPT MOLEC & MED GENET, TORONTO, ON M5G 1L6, CANADA
基金
英国医学研究理事会;
关键词
D O I
10.1016/0959-437X(95)80009-3
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
The largest subunit of eukaryotic RNA polymerase II has an unusual tandemly repeated heptapeptide sequence at its carboxyl terminus. The function of this evolutionarily conserved carboxy-terminal domain is unknown; however, new evidence links it to the formation of a large multi-component RNA polymerase II complex possessing enhanced transcriptional initiation properties. The existence of a pre-assembled RNA polymerase II 'holoenzyme' in the cell calls into question the long held view of transcription initiation as an ordered multi-step process.
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页码:204 / 209
页数:6
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