1NM7 image
Deposition Date 2003-01-09
Release Date 2003-03-04
Last Version Date 2024-05-29
Entry Detail
PDB ID:
1NM7
Keywords:
PROTEIN TRANSPORT
Title:
Solution structure of the ScPex13p SH3 domain
Biological Source:
Source Organism:
Saccharomyces cerevisiae (Taxon ID: 4932)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
SOLUTION NMR
Conformers Calculated:
100
Conformers Submitted:
10
Selection Criteria:
structures with the lowest energy
1NM7 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Peroxisomal Membrane Protein PAS20
Gene (Uniprot):PEX13
Chain IDs:A
Chain Length:69
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P80667 Pfam ID:PF00018
Ligand Molecules
NA
Primary Citation
The ScPex13p SH3 Domain Exposes Two Distinct Binding Sites for Pex5p and Pex14p
J.Mol.Biol. 326 1427 1435 (2003)
PMID: 12595255 DOI: 10.1016/S0022-2836(03)00039-1

Abstact

Pex13p is an essential component of the peroxisomal protein import machinery and interacts via its C-terminal SH3 domain with the type II SH3-ligand Pex14p and the non-PXXP protein Pex5p. We report the solution structure of the SH3 domain of Pex13p from Saccharomyces cerevisiae and the identification of a novel-binding pocket, which binds a non-PXXP-peptide representing the binding site of Pex5p. Chemical shift assays revealed the binding sites for Pex5p and Pex14p ligand peptides to be distinct and spatially separated. Competition assays demonstrated that the two ligand peptides can bind simultaneously to the SH3 domain.

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Primary Citation of related structures
1N5Z