TRANSCRIPTION FACTOR NUCLEAR FACTOR-I PROTEINS FORM STABLE HOMODIMERS AND HETERODIMERS

被引:117
作者
KRUSE, U [1 ]
SIPPEL, AE [1 ]
机构
[1] UNIV FREIBURG,INST BIOL GENET 3,D-79104 FREIBURG,GERMANY
关键词
TRANSCRIPTION FACTOR; DNA BINDING; DIMERIZATION; NUCLEAR FACTOR I; TGGCA PROTEIN; CCAAT BINDING TRANSCRIPTION FACTOR;
D O I
10.1016/0014-5793(94)00585-0
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Nuclear factor I (NFI) proteins constitute a large family of eukaryotic DNA binding proteins. They are involved in viral and cellular aspects of transcriptional regulation and they are capable of stimulating adenovirus initiation of replication. Using in vitro translated NFI proteins encoded by four different chicken NFI genes, we have detected homodimers as well as heterodimers for all combinations tested. The formation of heterodimers was critically dependent on cotranslation, indicating stable dimer formation in the absence of DNA. The unrestricted heterodimerization of NFI proteins adds, beside gene diversity and alternative splicing, another level of diversity to this protein family.
引用
收藏
页码:46 / 50
页数:5
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