D202K mutant of P. denitrificans Atp12p

Experimental Data Snapshot

  • Resolution: 1.80 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.225 

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Chaperones of F1-ATPase

Ludlam, A.Brunzelle, J.Pribyl, T.Xu, X.Gatti, D.L.Ackerman, S.H.

(2009) J Biol Chem 284: 17138-17146

  • DOI: https://doi.org/10.1074/jbc.M109.002568
  • Primary Citation of Related Structures:  
    2R31, 2ZD2

  • PubMed Abstract: 

    Mitochondrial F(1)-ATPase contains a hexamer of alternating alpha and beta subunits. The assembly of this structure requires two specialized chaperones, Atp11p and Atp12p, that bind transiently to beta and alpha. In the absence of Atp11p and Atp12p, the hexamer is not formed, and alpha and beta precipitate as large insoluble aggregates. An early model for the mechanism of chaperone-mediated F(1) assembly (Wang, Z. G., Sheluho, D., Gatti, D. L., and Ackerman, S. H. (2000) EMBO J. 19, 1486-1493) hypothesized that the chaperones themselves look very much like the alpha and beta subunits, and proposed an exchange of Atp11p for alpha and of Atp12p for beta; the driving force for the exchange was expected to be a higher affinity of alpha and beta for each other than for the respective chaperone partners. One important feature of this model was the prediction that as long as Atp11p is bound to beta and Atp12p is bound to alpha, the two F(1) subunits cannot interact at either the catalytic site or the noncatalytic site interface. Here we present the structures of Atp11p from Candida glabrata and Atp12p from Paracoccus denitrificans, and we show that some features of the Wang model are correct, namely that binding of the chaperones to alpha and beta prevents further interactions between these F(1) subunits. However, Atp11p and Atp12p do not resemble alpha or beta, and it is instead the F(1) gamma subunit that initiates the release of the chaperones from alpha and beta and their further assembly into the mature complex.

  • Organizational Affiliation

    From the Department of Biochemistry and Molecular Biology, Wayne State University School of Medicine, Detroit, Michigan 48201.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ATP12 ATPase
A, B
234Paracoccus denitrificans PD1222Mutation(s): 1 
Gene Names: PDEN_0792
Find proteins for A1B060 (Paracoccus denitrificans (strain Pd 1222))
Explore A1B060 
Go to UniProtKB:  A1B060
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA1B060
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.80 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.225 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.16α = 102.91
b = 51.047β = 105.45
c = 67.117γ = 90.07
Software Package:
Software NamePurpose
Acceldata collection
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-03-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Source and taxonomy, Version format compliance
  • Version 1.2: 2021-11-10
    Changes: Database references
  • Version 1.3: 2023-11-01
    Changes: Data collection, Refinement description