6CNI

Crystal structure of H105A PGAM5 dimer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.172 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Functional role of PGAM5 multimeric assemblies and their polymerization into filaments.

Ruiz, K.Thaker, T.M.Agnew, C.Miller-Vedam, L.Trenker, R.Herrera, C.Ingaramo, M.Toso, D.Frost, A.Jura, N.

(2019) Nat Commun 10: 531-531

  • DOI: https://doi.org/10.1038/s41467-019-08393-w
  • Primary Citation of Related Structures:  
    6CNI, 6CNL

  • PubMed Abstract: 

    PGAM5 is a mitochondrial protein phosphatase whose genetic ablation in mice results in mitochondria-related disorders, including neurodegeneration. Functions of PGAM5 include regulation of mitophagy, cell death, metabolism and aging. However, mechanisms regulating PGAM5 activation and signaling are poorly understood. Using electron cryo-microscopy, we show that PGAM5 forms dodecamers in solution. We also present a crystal structure of PGAM5 that reveals the determinants of dodecamer formation. Furthermore, we observe PGAM5 dodecamer assembly into filaments both in vitro and in cells. We find that PGAM5 oligomerization into a dodecamer is not only essential for catalytic activation, but this form also plays a structural role on mitochondrial membranes, which is independent of phosphatase activity. Together, these findings suggest that modulation of the oligomerization of PGAM5 may be a regulatory switch of potential therapeutic interest.


  • Organizational Affiliation

    Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, 94158, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Serine/threonine-protein phosphatase PGAM5, mitochondrial
A, B
223Homo sapiensMutation(s): 1 
Gene Names: PGAM5
EC: 3.1.3.16
UniProt & NIH Common Fund Data Resources
Find proteins for Q96HS1 (Homo sapiens)
Explore Q96HS1 
Go to UniProtKB:  Q96HS1
PHAROS:  Q96HS1
GTEx:  ENSG00000247077 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96HS1
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.172 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.003α = 90
b = 72.018β = 90
c = 81.941γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-02-13
    Type: Initial release
  • Version 1.1: 2023-10-04
    Changes: Data collection, Database references, Derived calculations, Refinement description