1Z2X image
Entry Detail
PDB ID:
1Z2X
Title:
Crystal structure of mouse Vps29
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2005-03-10
Release Date:
2005-06-21
Method Details:
Experimental Method:
Resolution:
2.22 Å
R-Value Free:
0.22
R-Value Work:
0.17
R-Value Observed:
0.17
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Vacuolar protein sorting 29
Chain IDs:A, B
Chain Length:192
Number of Molecules:2
Biological Source:Mus musculus
Primary Citation
Vps29 has a phosphoesterase fold that acts as a protein interaction scaffold for retromer assembly
NAT.STRUCT.MOL.BIOL. 12 594 602 (2005)
PMID: 15965486 DOI: 10.1038/nsmb954

Abstact

The retromer complex is responsible for the retrieval of mannose 6-phosphate receptors from the endosomal system to the Golgi. Here we present the crystal structure of the mammalian retromer subunit mVps29 and show that it has structural similarity to divalent metal-containing phosphoesterases. mVps29 can coordinate metals in a similar manner but has no detectable phosphoesterase activity in vitro, suggesting a unique specificity or function. The mVps29 and mVps26 subunits bind independently to mVps35 and together form a high-affinity heterotrimeric subcomplex. Mutagenesis reveals the structural basis for the interaction of mVps29 with mVps35 and subsequent association with endosomal membranes in vivo. A conserved hydrophobic surface distinct from the primary Vps35p binding site mediates assembly of the Vps29p-Vps26p-Vps35p subcomplex with sorting nexins in yeast, and mutation of either site results in a defect in retromer-dependent membrane trafficking.

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