1GZM

Structure of Bovine Rhodopsin in a Trigonal Crystal Form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.202 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 2.1 of the entry. See complete history

Re-refinement Note

A newer entry is available that reflects an alternative modeling of the original data: 3C9L


Literature

Structure of Bovine Rhodopsin in a Trigonal Crystal Form

Li, J.Edwards, P.Burghammer, M.Villa, C.Schertler, G.F.X.

(2004) J Mol Biol 343: 1409

  • DOI: https://doi.org/10.1016/j.jmb.2004.08.090
  • Primary Citation of Related Structures:  
    1GZM

  • PubMed Abstract: 

    We have determined the structure of bovine rhodopsin at 2.65 A resolution using untwinned native crystals in the space group P3(1), by molecular replacement from the 2.8 A model (1F88) solved in space group P4(1). The new structure reveals mechanistically important details unresolved previously, which are considered in the membrane context by docking the structure into a cryo-electron microscopy map of 2D crystals. Kinks in the transmembrane helices facilitate inter-helical polar interactions. Ordered water molecules extend the hydrogen bonding networks, linking Trp265 in the retinal binding pocket to the NPxxY motif near the cytoplasmic boundary, and the Glu113 counterion for the protonated Schiff base to the extracellular surface. Glu113 forms a complex with a water molecule hydrogen bonded between its main chain and side-chain oxygen atoms. This can be expected to stabilise the salt-bridge with the protonated Schiff base linking the 11-cis-retinal to Lys296. The cytoplasmic ends of helices H5 and H6 have been extended by one turn. The G-protein interaction sites mapped to the cytoplasmic ends of H5 and H6 and a spiral extension of H5 are elevated above the bilayer. There is a surface cavity next to the conserved Glu134-Arg135 ion pair. The cytoplasmic loops have the highest temperature factors in the structure, indicative of their flexibility when not interacting with G protein or regulatory proteins. An ordered detergent molecule is seen wrapped around the kink in H6, stabilising the structure around the potential hinge in H6. These findings provide further explanation for the stability of the dark state structure. They support a mechanism for the activation, initiated by photo-isomerisation of the chromophore to its all-trans form, that involves pivoting movements of kinked helices, which, while maintaining hydrophobic contacts in the membrane interior, can be coupled to amplified translation of the helix ends near the membrane surfaces.


  • Organizational Affiliation

    Medical Research Council Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, UK. jl@mrc-lmb.cam.ca.uk


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RHODOPSIN
A, B
349Bos taurusMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for P02699 (Bos taurus)
Explore P02699 
Go to UniProtKB:  P02699
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02699
Glycosylation
Glycosylation Sites: 2
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

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Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
C, D, E, F
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE
GlyCosmos:  G15407YE
GlyGen:  G15407YE
Small Molecules
Ligands 6 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
PEF
Query on PEF

Download Ideal Coordinates CCD File 
J [auth A],
X [auth B]
DI-PALMITOYL-3-SN-PHOSPHATIDYLETHANOLAMINE
C37 H74 N O8 P
SLKDGVPOSSLUAI-PGUFJCEWSA-N
C8E
Query on C8E

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AA [auth B]
BA [auth B]
CA [auth B]
L [auth A]
M [auth A]
AA [auth B],
BA [auth B],
CA [auth B],
L [auth A],
M [auth A],
N [auth A],
O [auth A],
P [auth A],
Q [auth A],
V [auth B],
W [auth B],
Z [auth B]
(HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE
C16 H34 O5
FEOZZFHAVXYAMB-UHFFFAOYSA-N
RET
Query on RET

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G [auth A],
S [auth B]
RETINAL
C20 H28 O
NCYCYZXNIZJOKI-OVSJKPMPSA-N
PLM
Query on PLM

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H [auth A],
I [auth A],
T [auth B],
U [auth B]
PALMITIC ACID
C16 H32 O2
IPCSVZSSVZVIGE-UHFFFAOYSA-N
LDA
Query on LDA

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DA [auth B],
K [auth A],
Y [auth B]
LAURYL DIMETHYLAMINE-N-OXIDE
C14 H31 N O
SYELZBGXAIXKHU-UHFFFAOYSA-N
ZN
Query on ZN

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EA [auth B],
R [auth A]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.202 
  • Space Group: P 31
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.82α = 90
b = 103.82β = 90
c = 76.59γ = 120
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling
AMoREphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

  • Released Date: 2003-11-20 
  • Deposition Author(s): Li, J.

Revision History  (Full details and data files)

  • Version 1.0: 2003-11-20
    Type: Initial release
  • Version 1.1: 2011-10-19
    Changes: Derived calculations, Non-polymer description, Other, Refinement description, Version format compliance
  • Version 1.2: 2019-05-08
    Changes: Data collection, Derived calculations, Experimental preparation, Other
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary
  • Version 2.1: 2023-12-13
    Changes: Data collection, Database references, Refinement description, Structure summary