4WWR

Crystal Structure of Bag6-Ubl4A Dimerization Domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.225 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Bag6 complex contains a minimal tail-anchor-targeting module and a mock BAG domain.

Mock, J.Y.Chartron, J.W.Zaslaver, M.Xu, Y.Ye, Y.Clemons, W.M.

(2015) Proc.Natl.Acad.Sci.USA 112: 106-111

  • DOI: 10.1073/pnas.1402745112

  • PubMed Abstract: 
  • BCL2-associated athanogene cochaperone 6 (Bag6) plays a central role in cellular homeostasis in a diverse array of processes and is part of the heterotrimeric Bag6 complex, which also includes ubiquitin-like 4A (Ubl4A) and transmembrane domain recogn ...

    BCL2-associated athanogene cochaperone 6 (Bag6) plays a central role in cellular homeostasis in a diverse array of processes and is part of the heterotrimeric Bag6 complex, which also includes ubiquitin-like 4A (Ubl4A) and transmembrane domain recognition complex 35 (TRC35). This complex recently has been shown to be important in the TRC pathway, the mislocalized protein degradation pathway, and the endoplasmic reticulum-associated degradation pathway. Here we define the architecture of the Bag6 complex, demonstrating that both TRC35 and Ubl4A have distinct C-terminal binding sites on Bag6 defining a minimal Bag6 complex. A crystal structure of the Bag6-Ubl4A dimer demonstrates that Bag6-BAG is not a canonical BAG domain, and this finding is substantiated biochemically. Remarkably, the minimal Bag6 complex defined here facilitates tail-anchored substrate transfer from small glutamine-rich tetratricopeptide repeat-containing protein α to TRC40. These findings provide structural insight into the complex network of proteins coordinated by Bag6.


    Organizational Affiliation

    Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125; and.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin-like protein 4A
B, H, D, F
47Homo sapiensGene Names: UBL4A (DXS254E, GDX, UBL4)
Find proteins for P11441 (Homo sapiens)
Go to Gene View: UBL4A
Go to UniProtKB:  P11441
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Large proline-rich protein BAG6
A, G, C, E
53Homo sapiensGene Names: BAG6 (BAT3, G3)
Find proteins for P46379 (Homo sapiens)
Go to Gene View: BAG6
Go to UniProtKB:  P46379
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.225 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 47.235α = 90.00
b = 56.494β = 96.23
c = 75.545γ = 90.00
Software Package:
Software NamePurpose
Aimlessdata scaling
XDSdata scaling
PDB_EXTRACTdata extraction
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationCountryGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesR01GM097572

Revision History 

  • Version 1.0: 2014-12-24
    Type: Initial release
  • Version 1.1: 2015-01-07
    Type: Database references
  • Version 1.2: 2015-01-21
    Type: Database references
  • Version 1.3: 2017-09-06
    Type: Author supporting evidence, Database references, Derived calculations, Other, Source and taxonomy, Structure summary
  • Version 1.4: 2017-11-22
    Type: Refinement description