1AP9

X-RAY STRUCTURE OF BACTERIORHODOPSIN FROM MICROCRYSTALS GROWN IN LIPIDIC CUBIC PHASES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.258 
  • R-Value Observed: 0.258 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

X-ray structure of bacteriorhodopsin at 2.5 angstroms from microcrystals grown in lipidic cubic phases.

Pebay-Peyroula, E.Rummel, G.Rosenbusch, J.P.Landau, E.M.

(1997) Science 277: 1676-1681

  • DOI: 10.1126/science.277.5332.1676
  • Primary Citation of Related Structures:  
    1AP9

  • PubMed Abstract: 
  • Lipidic cubic phases provide a continuous three-dimensional bilayer matrix that facilitates nucleation and growth of bacteriorhodopsin microcrystals. The crystals diffract x-rays isotropically to 2.0 angstroms. The structure of this light-driven prot ...

    Lipidic cubic phases provide a continuous three-dimensional bilayer matrix that facilitates nucleation and growth of bacteriorhodopsin microcrystals. The crystals diffract x-rays isotropically to 2.0 angstroms. The structure of this light-driven proton pump was solved at a resolution of 2.5 angstroms by molecular replacement, using previous results from electron crystallographic studies as a model. The earlier structure was generally confirmed, but several differences were found, including loop conformations and side chain residues. Eight water molecules are now identified experimentally in the proton pathway. These findings reveal the constituents of the proton translocation pathway in the ground state.


    Related Citations: 
    • Crystallisation of a Polar Protein and Small Molecules from the Aqueous Compartment of Lipidic Cubic Phases
      Landau, E.M., Rummel, G., Cowan-Jacob, S.W., Rosenbusch, J.P.
      (1997) J Phys Chem B 101: 1935

    Organizational Affiliation

    Institut de Biologie Structurale/CEA-CNRS/Université Joseph Fourier, 41 Avenue des Martyrs, F-38027 Grenoble Cedex 1, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
BACTERIORHODOPSINA248Halobacterium salinarumMutation(s): 0 
Find proteins for P02945 (Halobacterium salinarum (strain ATCC 700922 / JCM 11081 / NRC-1))
Explore P02945 
Go to UniProtKB:  P02945
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
RET
Query on RET

Download CCD File 
A
RETINAL
C20 H28 O
NCYCYZXNIZJOKI-OVSJKPMPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.258 
  • R-Value Observed: 0.258 
  • Space Group: P 63
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.76α = 90
b = 61.76β = 90
c = 104.16γ = 120
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
CCP4data scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-09-16
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance