2V8A

The structure of Thermosynechococcus elongatus allophycocyanin at 3.5 Angstroems.

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.260 
  • R-Value Observed: 0.261 

Starting Model: experimental
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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 Struct Biol Cryst Commun 63: 998

  • DOI: https://doi.org/10.1107/S1744309107050920
  • Primary Citation of Related Structures:  
    2V8A

  • 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 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
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ALLOPHYCOCYANIN ALPHA CHAIN161Thermosynechococcus vestitus BP-1Mutation(s): 0 
UniProt
Find proteins for P50030 (Thermosynechococcus vestitus (strain NIES-2133 / IAM M-273 / BP-1))
Explore P50030 
Go to UniProtKB:  P50030
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP50030
Sequence Annotations
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
ALLOPHYCOCYANIN BETA CHAIN161Thermosynechococcus vestitus BP-1Mutation(s): 0 
UniProt
Find proteins for P50031 (Thermosynechococcus vestitus (strain NIES-2133 / IAM M-273 / BP-1))
Explore P50031 
Go to UniProtKB:  P50031
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP50031
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
MEN
Query on MEN
B
L-PEPTIDE LINKINGC5 H10 N2 O3ASN
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.260 
  • R-Value Observed: 0.261 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.177α = 90
b = 102.177β = 90
c = 193.984γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-12-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2019-05-08
    Changes: Data collection, Derived calculations, Experimental preparation, Other
  • Version 1.3: 2023-12-13
    Changes: Data collection, Database references, Other, Refinement description