2N9P image
Deposition Date 2015-12-01
Release Date 2016-05-25
Last Version Date 2024-05-15
Entry Detail
PDB ID:
2N9P
Keywords:
LIGASE
Title:
Solution structure of RNF126 N-terminal zinc finger domain in complex with BAG6 Ubiquitin-like domain
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
SOLUTION NMR
Conformers Calculated:
100
Conformers Submitted:
20
Selection Criteria:
structures with the lowest energy
2N9P validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:E3 ubiquitin-protein ligase RNF126
Gene (Uniprot):RNF126
Chain IDs:A
Chain Length:42
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:Q9BV68 Pfam ID:PF14369
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Large proline-rich protein BAG6
Gene (Uniprot):BAG6
Chain IDs:B (auth: C)
Chain Length:100
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P46379 Pfam ID:PF00240
Ligand Molecules
ZN
Primary Citation
Structural and functional insights into the E3 ligase, RNF126.
Sci Rep 6 26433 26433 (2016)
PMID: 27193484 DOI: 10.1038/srep26433

Abstact

RNF126 is an E3 ubiquitin ligase that collaborates with the BAG6 sortase complex to ubiquitinate hydrophobic substrates in the cytoplasm that are destined for proteasomal recycling. Composed of a trimeric complex of BAG6, TRC35 and UBL4A the BAG6 sortase is also associated with SGTA, a co-chaperone from which it can obtain hydrophobic substrates. Here we solve the solution structure of the RNF126 zinc finger domain in complex with the BAG6 UBL domain. We also characterise an interaction between RNF126 and UBL4A and analyse the competition between SGTA and RNF126 for the N-terminal BAG6 binding site. This work sheds light on the sorting mechanism of the BAG6 complex and its accessory proteins which, together, decide the fate of stray hydrophobic proteins in the aqueous cytoplasm.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
2N9O