3GQB

Crystal Structure of the A3B3 complex from V-ATPase

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.250 
  • R-Value Observed: 0.251 

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This is version 1.1 of the entry. See complete history. 


Literature

Crystal structure of A(3)B(3) complex of V-ATPase from Thermus thermophilus.

Maher, M.J., Akimoto, S., Iwata, M., Nagata, K., Hori, Y., Yoshida, M., Yokoyama, S., Iwata, S., Yokoyama, K.

(2009) EMBO J 28: 3771-3779

  • DOI: 10.1038/emboj.2009.310
  • Primary Citation of Related Structures:  
    3GQB

  • PubMed Abstract: 

    • Vacuolar-type ATPases (V-ATPases) exist in various cellular membranes of many organisms to regulate physiological processes by controlling the acidic environment. Here, we have determined the crystal structure of the A(3)B(3) subcomplex of V-ATPase at 2.8 A resolution ...

    Vacuolar-type ATPases (V-ATPases) exist in various cellular membranes of many organisms to regulate physiological processes by controlling the acidic environment. Here, we have determined the crystal structure of the A(3)B(3) subcomplex of V-ATPase at 2.8 A resolution. The overall construction of the A(3)B(3) subcomplex is significantly different from that of the alpha(3)beta(3) sub-domain in F(o)F(1)-ATP synthase, because of the presence of a protruding 'bulge' domain feature in the catalytic A subunits. The A(3)B(3) subcomplex structure provides the first molecular insight at the catalytic and non-catalytic interfaces, which was not possible in the structures of the separate subunits alone. Specifically, in the non-catalytic interface, the B subunit seems to be incapable of binding ATP, which is a marked difference from the situation indicated by the structure of the F(o)F(1)-ATP synthase. In the catalytic interface, our mutational analysis, on the basis of the A(3)B(3) structure, has highlighted the presence of a cluster composed of key hydrophobic residues, which are essential for ATP hydrolysis by V-ATPases.

    Organizational Affiliation: 

    Division of Molecular Biosciences, Imperial College London, South Kensington Campus, London, UK.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
V-type ATP synthase alpha chainA, C578Thermus thermophilus HB8Mutation(s): 4 
Gene Names: atpA, TTHA1273
EC: 3.6.3.14 (PDB Primary Data), 7.1.2.2 (UniProt)
Find proteins for Q56403 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Explore Q56403 
Go to UniProtKB:  Q56403
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
V-type ATP synthase beta chainB, D464Thermus thermophilus HB8Mutation(s): 1 
Gene Names: atpB, TTHA1272
Find proteins for Q56404 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Explore Q56404 
Go to UniProtKB:  Q56404
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.250 
  • R-Value Observed: 0.251 
  • Space Group: P 3 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 199.368α = 90
b = 199.368β = 90
c = 179.005γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-11-24
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance