Structural basis for genome wide recognition of 5-bp GC motifs by SMAD transcription factors.
Structural basis for genome wide recognition of 5-bp GC motifs by SMAD transcription factors.
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DOI:
10.1038/s41467-017-02054-6
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发表时间:
2017-12-12
影响因子:
16.6
通讯作者:
Macias MJ
中科院分区:
文献类型:
--
作者:
Martin-Malpartida P;Batet M;Kaczmarska Z;Freier R;Gomes T;Aragón E;Zou Y;Wang Q;Xi Q;Ruiz L;Vea A;Márquez JA;Massagué J;Macias MJ
Smad transcription factors activated by TGF-β or by BMP receptors form trimeric complexes with Smad4 to target specific genes for cell fate regulation. The CAGAC motif has been considered as the main binding element for Smad2/3/4, whereas Smad1/5/8 have been thought to preferentially bind GC-rich elements. However, chromatin immunoprecipitation analysis in embryonic stem cells showed extensive binding of Smad2/3/4 to GC-rich cis-regulatory elements. Here, we present the structural basis for specific binding of Smad3 and Smad4 to GC-rich motifs in the goosecoid promoter, a nodal-regulated differentiation gene. The structures revealed a 5-bp consensus sequence GGC(GC)|(CG) as the binding site for both TGF-β and BMP-activated Smads and for Smad4. These 5GC motifs are highly represented as clusters in Smad-bound regions genome-wide. Our results provide a basis for understanding the functional adaptability of Smads in different cellular contexts, and their dependence on lineage-determining transcription factors to target specific genes in TGF-β and BMP pathways. Smad transcription factors are part of the TGF-β signal transduction pathways and are recruited to the genome by cell lineage-defining factors. Here, the authors identify specific Smad binding GC-rich motifs and provide structural information showing Smad3 and Smad4 bound to these motifs.
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影响因子:
4.8
作者:
Chai, JJ;Wu, JW;Shi, YG
通讯作者:
Shi, YG
DOI:
10.1107/s0907444905036693
发表时间:
2006-01-01
影响因子:
2.2
作者:
Evans, P
通讯作者:
Evans, P
影响因子:
14.9
作者:
Lavery R;Moakher M;Maddocks JH;Petkeviciute D;Zakrzewska K
通讯作者:
Zakrzewska K
影响因子:
2.5
作者:
Collery, Ross F.;Link, Brian A.
通讯作者:
Link, Brian A.
影响因子:
64.8
作者:
Lagna, G;Hata, A;Massague, J
通讯作者:
Massague, J