5UI2

CRYSTAL STRUCTURE OF ORANGE CAROTENOID PROTEIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structure of a cyanobacterial water-soluble carotenoid binding protein.

Kerfeld, C.A.Sawaya, M.R.Brahmandam, V.Cascio, D.Ho, K.K.Trevithick-Sutton, C.C.Krogmann, D.W.Yeates, T.O.

(2003) Structure 11: 55-65

  • Primary Citation of Related Structures:  
  • Also Cited By: 3MG3, 3MG2, 3MG1, 3I1X, 3I1W, 3I1V

  • PubMed Abstract: 
  • Carotenoids undergo a wide range of photochemical reactions in animal, plant, and microbial systems. In photosynthetic organisms, in addition to light harvesting, they perform an essential role in protecting against light-induced damage by quenching ...

    Carotenoids undergo a wide range of photochemical reactions in animal, plant, and microbial systems. In photosynthetic organisms, in addition to light harvesting, they perform an essential role in protecting against light-induced damage by quenching singlet oxygen, superoxide anion radicals, or triplet-state chlorophyll. We have determined the crystal structure of a water-soluble orange carotenoid protein (OCP) isolated from the cyanobacterium Arthrospira maxima at a resolution of 2.1 A. OCP forms a homodimer with one carotenoid molecule per monomer. The carotenoid binding site is lined by a striking number of methionine residues. The structure reveals several possible ways in which the protein environment influences the spectral properties of the pigment and provides insight into how the OCP carries out its putative functions in photoprotection.


    Related Citations: 
    • CRYSTALS OF THE CAROTENOID PROTEIN FROM ARTHROSPIRA MAXIMA CONTAINING UNIFORMLY ORIENTED PIGMENT MOLECULES
      KERFELD, C.A.,WU, Y.P.,CHAN, C.,KROGMANN, D.W.,YEATES, T.O.
      (1997) ACTA CRYSTALLOGR., SECT.D 53: 720


    Organizational Affiliation

    Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA. kerfeld@mbi.ucla.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Orange carotenoid-binding protein
A, B
317Arthrospira maximaMutation(s): 0 
Find proteins for P83689 (Arthrospira maxima)
Go to UniProtKB:  P83689
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SUC
Query on SUC

Download SDF File 
Download CCD File 
A
SUCROSE
C12 H22 O11
CZMRCDWAGMRECN-UGDNZRGBSA-N
 Ligand Interaction
EQ3
Query on EQ3

Download SDF File 
Download CCD File 
A, B
(3'R)-3'-hydroxy-beta,beta-caroten-4-one
3'-Hydroxyechinenone, 3'-OH-Echinenone
C40 H54 O2
ZRCXVNZZDQGBQT-BANQPSJHSA-N
 Ligand Interaction
CL
Query on CL

Download SDF File 
Download CCD File 
A, B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.213 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 217.200α = 90.00
b = 40.761β = 95.80
c = 75.460γ = 90.00
Software Package:
Software NamePurpose
BUSTERrefinement
PDB_EXTRACTdata extraction
DENZOdata reduction
SCALEPACKdata scaling
MLPHAREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesNIH GM 31299
U.S. Department of AgricultureUnited StatesUSDA1999-01759

Revision History 

  • Version 1.0: 2017-01-25
    Type: Initial release
  • Version 1.1: 2017-09-27
    Type: Author supporting evidence
  • Version 1.2: 2018-10-10
    Type: Data collection, Database references, Structure summary