2V8A

The structure of Thermosynechococcus elongatus allophycocyanin at 3.5 Angstroems.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.260 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The Structure of Allophycocyanin from Thermosynechococcus Elongatus at 3.5 A Resolution.

Murray, J.W.Maghlaoui, K.Barber, J.

(2007) Acta Crystallogr.,Sect.F 63: 998

  • DOI: 10.1107/S1744309107050920

  • PubMed Abstract: 
  • Cyanobacteria and red algae use light-harvesting pigments bound by proteins to capture solar radiation and to channel excitation energy into their reaction centres. In most cyanobacteria, a multi-megadalton soluble structure known as the phycobilisom ...

    Cyanobacteria and red algae use light-harvesting pigments bound by proteins to capture solar radiation and to channel excitation energy into their reaction centres. In most cyanobacteria, a multi-megadalton soluble structure known as the phycobilisome is a major light-harvesting system. Allophycocyanin is the main component of the phycobilisome core, forming a link between the rest of the phycobilisome and the reaction-centre core. The crystal structure of allophycocyanin from Thermosynechococcus elongatus (TeAPC) has been determined and refined at 3.5 A resolution to a crystallographic R value of 26.0% (R(free) = 28.5%). The structure was solved by molecular replacement using the allophycocyanin structure from Spirulina platensis as the search model. The asymmetric unit contains an (alphabeta) monomer which is expanded by symmetry to a crystallographic trimer.


    Organizational Affiliation

    Division of Molecular Biosciences, Imperial College, Exhibition Road, London SW7 2AZ, England.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ALLOPHYCOCYANIN ALPHA CHAIN
A
161Thermosynechococcus elongatus (strain BP-1)Mutation(s): 0 
Gene Names: apcA
Find proteins for P50030 (Thermosynechococcus elongatus (strain BP-1))
Go to UniProtKB:  P50030
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ALLOPHYCOCYANIN BETA CHAIN
B
161Thermosynechococcus elongatus (strain BP-1)Mutation(s): 0 
Gene Names: apcB
Find proteins for P50031 (Thermosynechococcus elongatus (strain BP-1))
Go to UniProtKB:  P50031
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: 3.5 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.260 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 102.177α = 90.00
b = 102.177β = 90.00
c = 193.984γ = 120.00
Software Package:
Software NamePurpose
PHASERphasing
SCALAdata scaling
REFMACrefinement
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-12-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance