共 56 条
MAPPING FUNCTIONAL REGIONS OF THE SEGMENT-SPECIFIC TRANSCRIPTION FACTOR KROX-20
被引:36
作者:

VESQUE, C
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机构:
ECOLE NORM SUPER,CNRS,D 1302,GENET MOLEC LAB,46 RUE ULM,F-75230 PARIS 05,FRANCE ECOLE NORM SUPER,CNRS,D 1302,GENET MOLEC LAB,46 RUE ULM,F-75230 PARIS 05,FRANCE

CHARNAY, P
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ECOLE NORM SUPER,CNRS,D 1302,GENET MOLEC LAB,46 RUE ULM,F-75230 PARIS 05,FRANCE ECOLE NORM SUPER,CNRS,D 1302,GENET MOLEC LAB,46 RUE ULM,F-75230 PARIS 05,FRANCE
机构:
[1] ECOLE NORM SUPER,CNRS,D 1302,GENET MOLEC LAB,46 RUE ULM,F-75230 PARIS 05,FRANCE
关键词:
D O I:
10.1093/nar/20.10.2485
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:
Krox-20, a zinc finger transcription factor with similarity to Spl, is likely to play an important role in the development of the vertebrate central nervous system. A knowledge of its molecular properties will help to understand its physiological functions. We have therefore performed a structure-function analysis of the protein to identify the regions involved in DNA-binding and transcriptional activation. Our data suggest that only the zinc fingers are required for high affinity, specific DNA-binding. Transcriptional activation was not affected by deletion of the C-terminal tail of the protein. In contrast, deletion of the N-terminal half, upstream of the zinc fingers, completely abolished transactivation without affecting DNA-binding or nuclear localization. Two transcriptional activation domains were identified in this region. They cooperate to establish full activity. They are rich in negatively-charged amino acids and are therefore may constitute acidic activation domains. Comparative analysis of the amino acid sequences of several zinc finger proteins belonging to the Krox-20 subfamily indicates that they contain acidic regions at similar locations within their N-terminal region, suggesting that the functional organization of these proteins has been conserved during evolution.
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页码:2485 / 2492
页数:8
相关论文
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