1C3W

BACTERIORHODOPSIN/LIPID COMPLEX AT 1.55 A RESOLUTION

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.225 
  • R-Value Observed: 0.158 

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This is version 1.3 of the entry. See complete history. 


Literature

Structure of bacteriorhodopsin at 1.55 A resolution.

Luecke, H., Schobert, B., Richter, H.T., Cartailler, J.P., Lanyi, J.K.

(1999) J Mol Biol 291: 899-911

  • DOI: 10.1006/jmbi.1999.3027
  • Primary Citation of Related Structures:  
    1C3W

  • PubMed Abstract: 

    • Th?e atomic structure of the light-driven ion pump bacteriorhodopsin and the surrounding lipid matrix was determined by X-ray diffraction of crystals grown in cubic lipid phase. In the extracellular region, an extensive three-dimensional hydrogen-bonded network of protein residues and seven water molecules leads from the buried retinal Schiff base and the proton acceptor Asp85 to the membrane surface ...

    Th?e atomic structure of the light-driven ion pump bacteriorhodopsin and the surrounding lipid matrix was determined by X-ray diffraction of crystals grown in cubic lipid phase. In the extracellular region, an extensive three-dimensional hydrogen-bonded network of protein residues and seven water molecules leads from the buried retinal Schiff base and the proton acceptor Asp85 to the membrane surface. Near Lys216 where the retinal binds, transmembrane helix G contains a pi-bulge that causes a non-proline? kink. The bulge is stabilized by hydrogen-bonding of the main-chain carbonyl groups of Ala215 and Lys216 with two buried water molecules located between the Schiff base and the proton donor Asp96 in the cytoplasmic region. The results indicate extensive involvement of bound water molecules in both the structure and the function of this seven-helical membrane protein. A bilayer of 18 tightly bound lipid chains forms an annulus around the protein in the crystal. Contacts between the trimers in the membrane plane are mediated almost exclusively by lipids.

    Related Citations: 
    • Proton Transfer Pathways in Bacteriorhodopsin at 2.3 Angstrom Resolution
      Luecke, H., Richter, H.-T., Lanyi, J.K.
      (1998) Science 280: 1934
    Organizational Affiliation: 

    Department of Molecular Biology and Biochemistry, University of California, Irvine, CA, 92697, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
BACTERIORHODOPSIN (GROUND STATE WILD TYPE "BR")A222Halobacterium salinarumMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for P02945 (Halobacterium salinarum (strain ATCC 700922 / JCM 11081 / NRC-1))
Explore P02945 
Go to UniProtKB:  P02945
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02945
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
LI1
Query on LI1
Download Ideal Coordinates CCD File 
B [auth A],
C [auth A],
D [auth A],
E [auth A],
F [auth A],
B [auth A],
C [auth A],
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
I [auth A],
J [auth A],
K [auth A],
L [auth A],
M [auth A],
N [auth A]
1-[2,6,10.14-TETRAMETHYL-HEXADECAN-16-YL]-2-[2,10,14-TRIMETHYLHEXADECAN-16-YL]GLYCEROL
C42 H86 O3
YERVUJAKCNBGCR-BIHSMRAKSA-N		 Ligand Interaction
SQU
Query on SQU
Download Ideal Coordinates CCD File 
O [auth A]2,10,23-TRIMETHYL-TETRACOSANE
C27 H56
ZADHKSJXSZBQFB-HHHXNRCGSA-N		 Ligand Interaction
RET
Query on RET
Download Ideal Coordinates CCD File 
P [auth A]RETINAL
C20 H28 O
NCYCYZXNIZJOKI-OVSJKPMPSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.225 
  • R-Value Observed: 0.158 
  • Space Group: P 63
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 60.631α = 90
b = 60.631β = 90
c = 108.156γ = 120
Software Package:
Software NamePurpose
SHELXL-97refinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

  • Released Date: 1999-09-15 
    • Deposition Author(s): Luecke, H.

Revision History  (Full details and data files)

  • Version 1.0: 1999-09-15
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2018-01-31
    Changes: Experimental preparation