ISDA: 1DEV

Deposition Date 1999-11-15

Release Date 2000-01-21

Last Version Date 2024-02-07

Entry Detail

PDB ID:

1DEV

Keywords:

SIGNALING PROTEIN

Title:

CRYSTAL STRUCTURE OF SMAD2 MH2 DOMAIN BOUND TO THE SMAD-BINDING DOMAIN OF SARA

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.20 Å

R-Value Free:

0.27

R-Value Work:

0.21

R-Value Observed:

0.22

Space Group:

P 31 2 1

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:MAD (mothers against decapentaplegic, Drosophila) homolog 2
Gene (Uniprot):SMAD2
Chain IDs:A, C
Chain Length:196
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:Q15796 Pfam ID:PF03166

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Smad anchor for receptor activation
Gene (Uniprot):ZFYVE9
Chain IDs:B, D
Chain Length:41
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:O95405 Pfam ID:PF11409

Ligand Molecules

Primary Citation

Structural basis of Smad2 recognition by the Smad anchor for receptor activation.

Wu, G, Chen, Y.G, Ozdamar, B, Gyuricza, C.A, Chong, P.A, Wrana, J.L, Massague, J, Shi, Y.Show

Science 287 92 97 (2000)

PMID: 10615055 DOI: 10.1126/science.287.5450.92

Abstact

The Smad proteins mediate transforming growth factor-beta (TGFbeta) signaling from the transmembrane serine-threonine receptor kinases to the nucleus. The Smad anchor for receptor activation (SARA) recruits Smad2 to the TGFbeta receptors for phosphorylation. The crystal structure of a Smad2 MH2 domain in complex with the Smad-binding domain (SBD) of SARA has been determined at 2.2 angstrom resolution. SARA SBD, in an extended conformation comprising a rigid coil, an alpha helix, and a beta strand, interacts with the beta sheet and the three-helix bundle of Smad2. Recognition between the SARA rigid coil and the Smad2 beta sheet is essential for specificity, whereas interactions between the SARA beta strand and the Smad2 three-helix bundle contribute significantly to binding affinity. Comparison of the structures between Smad2 and a comediator Smad suggests a model for how receptor-regulated Smads are recognized by the type I receptors.

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Chemical

Disease

Primary Citation of related structures

Abstact

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