1JBO

The 1.45A Three-Dimensional Structure of c-Phycocyanin from the Thermophylic Cyanobacterium Synechococcus elongatus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.146 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The 1.45A three-dimensional structure of C-phycocyanin from the thermophilic cyanobacterium Synechococcus elongatus

Nield, J.Rizkallah, P.J.Barber, J.Chayen, N.E.

(2003) J.STRUCT.BIOL. 141: 149-155


  • PubMed Abstract: 
  • The conversion of solar radiation to chemical energy by photosynthetic organisms provides the primary driving force for life on earth. Light energy is captured by a variety of pigments, usually bound to proteins, which vary with different types of or ...

    The conversion of solar radiation to chemical energy by photosynthetic organisms provides the primary driving force for life on earth. Light energy is captured by a variety of pigments, usually bound to proteins, which vary with different types of organisms. We report here the 1.45 A resolution three-dimensional structure of one such pigment protein, C-phycocyanin, from Synechococcus elongatus. The structure is at the highest resolution achieved for any such phycobiliprotein. This level of resolution was made possible by implementing a novel crystallization method whereby nucleation is decoupled from subsequent growth, by incubating crystallizing drops for 7h under nucleation conditions and then transferring them to metastable conditions for growth. This is done without touching the crystallization drops throughout the process.


    Organizational Affiliation

    Wolfson Laboratories, Department of Biological Sciences, Imperial College London SW7 2AZ, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
C-Phycocyanin alpha chain
A
162Thermosynechococcus elongatus (strain BP-1)Mutation(s): 0 
Gene Names: cpcA
Find proteins for P50032 (Thermosynechococcus elongatus (strain BP-1))
Go to UniProtKB:  P50032
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
C-Phycocyanin beta chain
B
172Thermosynechococcus elongatus (strain BP-1)Mutation(s): 0 
Gene Names: cpcB
Find proteins for P50033 (Thermosynechococcus elongatus (strain BP-1))
Go to UniProtKB:  P50033
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CYC
Query on CYC

Download SDF File 
Download CCD File 
A, B
PHYCOCYANOBILIN
C33 H40 N4 O6
VXTXPYZGDQPMHK-GMXXPEQVSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MEN
Query on MEN
B
L-PEPTIDE LINKINGC5 H10 N2 O3ASN
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.146 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 187.995α = 90.00
b = 187.995β = 90.00
c = 60.542γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
CCP4data scaling
AMoREphasing
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-03-18
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance