2C61

Crystal structure of the non-catalytic B subunit of A-type ATPase from M. mazei Go1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 

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This is version 1.2 of the entry. See complete history


Literature

Crystal Structure of the Archaeal A1Ao ATP Synthase Subunit B from Methanosarcina Mazei Go1: Implications of Nucleotide-Binding Differences in the Major A1Ao Subunits a and B. Subunits a and B

Schaefer, I.Bailer, S.M.Dueser, M.Boersch, M.Bernal, R.A.Stock, D.Grueber, G.

(2006) J Mol Biol 358: 725

  • DOI: 10.1016/j.jmb.2006.02.057
  • Primary Citation of Related Structures:  
    2C61

  • PubMed Abstract: 
  • The A1Ao ATP synthase from archaea represents a class of chimeric ATPases/synthases, whose function and general structural design share characteristics both with vacuolar V1Vo ATPases and with F1Fo ATP synthases. The primary sequences of the two large polypeptides A and B, from the catalytic part, are closely related to the eukaryotic V1Vo ATPases ...

    The A1Ao ATP synthase from archaea represents a class of chimeric ATPases/synthases, whose function and general structural design share characteristics both with vacuolar V1Vo ATPases and with F1Fo ATP synthases. The primary sequences of the two large polypeptides A and B, from the catalytic part, are closely related to the eukaryotic V1Vo ATPases. The chimeric nature of the A1Ao ATP synthase from the archaeon Methanosarcina mazei Gö1 was investigated in terms of nucleotide interaction. Here, we demonstrate the ability of the overexpressed A and B subunits to bind ADP and ATP by photoaffinity labeling. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry was used to map the peptide of subunit B involved in nucleotide interaction. Nucleotide affinities in both subunits were determined by fluorescence correlation spectroscopy, indicating a weaker binding of nucleotide analogues to subunit B than to A. In addition, the nucleotide-free crystal structure of subunit B is presented at 1.5 A resolution, providing the first view of the so-called non-catalytic subunit of the A1Ao ATP synthase. Superposition of the A-ATP synthase non-catalytic B subunit and the F-ATP synthase non-catalytic alpha subunit provides new insights into the similarities and differences of these nucleotide-binding ATPase subunits in particular, and into nucleotide binding in general. The arrangement of subunit B within the intact A1Ao ATP synthase is presented.


    Organizational Affiliation

    Universität des Saarlandes, Fachrichtung 2.3 & 2.5, D-66421 Homburg, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
A-TYPE ATP SYNTHASE NON-CATALYTIC SUBUNIT BA, B469Methanosarcina mazei Go1Mutation(s): 0 
Gene Names: atpBahaBMM_0779
EC: 3.6.3.14
Find proteins for Q60187 (Methanosarcina mazei (strain ATCC BAA-159 / DSM 3647 / Goe1 / Go1 / JCM 11833 / OCM 88))
Explore Q60187 
Go to UniProtKB:  Q60187
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.623α = 90
b = 96.418β = 90
c = 130.715γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
SOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-12-11
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance