8XFB image
Entry Detail
PDB ID:
8XFB
EMDB ID:
Title:
Cryo-EM structure of partial dimeric WDR11-FAM91A1 complex
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2023-12-13
Release Date:
2024-08-14
Method Details:
Experimental Method:
Resolution:
3.40 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Protein FAM91A1
Chain IDs:B (auth: A)
Chain Length:847
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:WD repeat-containing protein 11
Chain IDs:A (auth: D), C (auth: B)
Chain Length:1224
Number of Molecules:2
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
The WDR11 complex is a receptor for acidic-cluster-containing cargo proteins.
Cell 187 4272 ? (2024)
PMID: 39013469 DOI: 10.1016/j.cell.2024.06.024

Abstact

Vesicle trafficking is a fundamental process that allows for the sorting and transport of specific proteins (i.e., "cargoes") to different compartments of eukaryotic cells. Cargo recognition primarily occurs through coats and the associated proteins at the donor membrane. However, it remains unclear whether cargoes can also be selected at other stages of vesicle trafficking to further enhance the fidelity of the process. The WDR11-FAM91A1 complex functions downstream of the clathrin-associated AP-1 complex to facilitate protein transport from endosomes to the TGN. Here, we report the cryo-EM structure of human WDR11-FAM91A1 complex. WDR11 directly and specifically recognizes a subset of acidic clusters, which we term super acidic clusters (SACs). WDR11 complex assembly and its binding to SAC-containing proteins are indispensable for the trafficking of SAC-containing proteins and proper neuronal development in zebrafish. Our studies thus uncover that cargo proteins could be recognized in a sequence-specific manner downstream of a protein coat.

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Primary Citation of related structures