BIOPHYSICAL CHARACTERIZATION OF THE C-MYB DNA-BINDING DOMAIN

被引：14
|
作者：
EBNETH, A
SCHWEERS, O
THOLE, H
FAGIN, U
URBANKE, C
MAASS, G
WOLFES, H
机构：
[1] HANNOVER MED SCH,ZENTRUM BIOCHEM,D-30623 HANNOVER,GERMANY
[2] MAX PLANCK ARBEITSGRP STRUKTURELLE MOLEK BIOL,D-22607 HAMBURG,GERMANY
[3] MAX PLANCK INST EXPTL ENDOCRINOL,D-30625 HANNOVER,GERMANY
来源：
BIOCHEMISTRY | 1994年 / 33卷 / 48期
关键词：
D O I：
10.1021/bi00252a026
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：
We have examined proteins containing the DNA-binding domain of c-Myb with biophysical methods. This DNA-binding domain consists of three imperfect repeats (R1, R2, and R3) conserved among many species, Our results indicate that the DNA-binding domain forms unspecific and specific complexes with oligodeoxynucleotides. In the presence of R1, DNA sequences related to a canonical c-Myb-binding site are better discriminated. Furthermore, although R2 and R3 are sufficient for sequence-specific DNA binding, a structural change of the DNA-binding domain upon specific complex formation is induced only when R1 is present. Therefore, R1 might serve as an important element required for secondary structure alteration upon binding and its stabilization as well as for better discrimination between specific and related DNA sequences.
引用
收藏
页码：14586 / 14593
页数：8
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