Crystal Structure of the coiled coil domain of MuRF1

Experimental Data Snapshot

  • Resolution: 2.10 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.214 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Molecular basis for the fold organization and sarcomeric targeting of the muscle atrogin MuRF1.

Franke, B.Gasch, A.Rodriguez, D.Chami, M.Khan, M.M.Rudolf, R.Bibby, J.Hanashima, A.Bogomolovas, J.von Castelmur, E.Rigden, D.J.Uson, I.Labeit, S.Mayans, O.

(2014) Open Biol 4: 130172-130172

  • DOI: https://doi.org/10.1098/rsob.130172
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    MuRF1 is an E3 ubiquitin ligase central to muscle catabolism. It belongs to the TRIM protein family characterized by a tripartite fold of RING, B-box and coiled-coil (CC) motifs, followed by variable C-terminal domains. The CC motif is hypothesized to be responsible for domain organization in the fold as well as for high-order assembly into functional entities. But data on CC from this family that can clarify the structural significance of this motif are scarce. We have characterized the helical region from MuRF1 and show that, contrary to expectations, its CC domain assembles unproductively, being the B2- and COS-boxes in the fold (respectively flanking the CC) that promote a native quaternary structure. In particular, the C-terminal COS-box seemingly forms an α-hairpin that packs against the CC, influencing its dimerization. This shows that a C-terminal variable domain can be tightly integrated within the conserved TRIM fold to modulate its structure and function. Furthermore, data from transfected muscle show that in MuRF1 the COS-box mediates the in vivo targeting of sarcoskeletal structures and points to the pharmacological relevance of the COS domain for treating MuRF1-mediated muscle atrophy.

  • Organizational Affiliation

    Institute of Integrative Biology, University of Liverpool, Biosciences Building, Crown Street, Liverpool L69 7ZB, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
E3 ubiquitin-protein ligase TRIM63A,
B [auth C],
C [auth B],
61Homo sapiensMutation(s): 1 
EC: 6.3.2
UniProt & NIH Common Fund Data Resources
Find proteins for Q969Q1 (Homo sapiens)
Explore Q969Q1 
Go to UniProtKB:  Q969Q1
GTEx:  ENSG00000158022 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ969Q1
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on MPD

Download Ideal Coordinates CCD File 
C6 H14 O2
Query on GOL

Download Ideal Coordinates CCD File 
F [auth A]
G [auth A]
J [auth C]
K [auth C]
M [auth C]
F [auth A],
G [auth A],
J [auth C],
K [auth C],
M [auth C],
N [auth C],
Q [auth B],
R [auth B],
S [auth B],
V [auth B],
X [auth D]
C3 H8 O3
Query on ACT

Download Ideal Coordinates CCD File 
H [auth A]
I [auth A]
L [auth C]
O [auth C]
P [auth C]
H [auth A],
I [auth A],
L [auth C],
O [auth C],
P [auth C],
T [auth B],
U [auth B],
W [auth B],
Y [auth D]
C2 H3 O2
Experimental Data & Validation

Experimental Data

  • Resolution: 2.10 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.214 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.79α = 90
b = 24.41β = 107.65
c = 75.39γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-03-26
    Type: Initial release
  • Version 1.1: 2018-10-10
    Changes: Data collection, Database references, Structure summary
  • Version 1.2: 2024-02-28
    Changes: Data collection, Database references, Derived calculations, Structure summary