1MOU

Crystal structure of Coral pigment


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.224 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

The 2.2 a crystal structure of a pocilloporin pigment reveals a nonplanar chromophore conformation.

Prescott, M.Ling, M.Beddoe, T.Oakley, A.J.Dove, S.Hoegh-Guldberg, O.Devenish, R.J.Rossjohn, J.

(2003) Structure 11: 275-284

  • DOI: 10.1016/s0969-2126(03)00028-5
  • Primary Citation of Related Structures:  
    1MOU, 1MOV

  • PubMed Abstract: 
  • Reef-building corals contain host pigments, termed pocilloporins, that function to regulate the light environment of their resident microalgae by acting as a photoprotectant in excessive sunlight. We have determined the crystal structure of an intensely blue, nonfluorescent pocilloporin to 2 ...

    Reef-building corals contain host pigments, termed pocilloporins, that function to regulate the light environment of their resident microalgae by acting as a photoprotectant in excessive sunlight. We have determined the crystal structure of an intensely blue, nonfluorescent pocilloporin to 2.2 A resolution and a genetically engineered fluorescent variant to 2.4 A resolution. The pocilloporin chromophore structure adopts a markedly different conformation in comparison with the DsRed chromophore, despite the chromophore sequences (Gln-Tyr-Gly) being identical; the tyrosine ring of the pocilloporin chromophore is noncoplanar and in the trans configuration. Furthermore, the fluorescent variant adopted a noncoplanar chromophore conformation. The data presented here demonstrates that the conformation of the chromophore is highly dependent on its immediate environment.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, 3800, Victoria, Australia. mark.prescott@med.monash.au



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GFP-like non-fluorescent chromoproteinA219Montipora efflorescensMutation(s): 1 
UniProt
Find proteins for P83690 (Montipora efflorescens)
Explore P83690 
Go to UniProtKB:  P83690
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CRQ
Query on CRQ
AL-PEPTIDE LINKINGC16 H16 N4 O5GLN, TYR, GLY
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.224 
  • Space Group: I 41 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 131.7α = 90
b = 131.7β = 90
c = 150.5γ = 90
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-04-08
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description
  • Version 1.4: 2020-03-18
    Changes: Advisory, Database references, Derived calculations