Structures of SAP-1 bound to DNA targets from the E74 and c-fos promoters: Insights into DNA sequence discrimination by ETS proteins

被引：95

作者：

Mo, Y

Vaessen, B

Johnston, K

Marmorstein, R ^{[1
]}

机构：

[1] Univ Penn, Wistar Inst, Philadelphia, PA 19104 USA

[2] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA

来源：

MOLECULAR CELL | 1998年 / 2卷 / 02期

基金：

美国国家卫生研究院;

关键词：

D O I：

10.1016/S1097-2765(00)80130-6

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：

SAP-1 is a member of the Ets transcription factors and cooperates with SRF protein to activate transcription of the c-fos protooncogene. The crystal structures of the conserved ETS domain of SAP-1 bound to DNA sequences from the E74 and c-fos promoters reveal that a set of conserved residues contact a GGA core DNA sequence. Discrimination for sequences outside this core is mediated by DNA contacts from conserved and nonconserved protein residues and sequence-dependent DNA structural properties characteristic of A-form DNA structure. Comparison with the related PU.1/DNA and GABP alpha/beta/DNA complexes provides general insights into DNA discrimination between Ets proteins. Modeling studies of a SAP-1/SRF/DNA complex suggest that SRF may modulate SAP-1 binding to DNA by interacting with its ETS domain.

引用

页码：201 / 212

页数：12

共 69 条

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