1B33

STRUCTURE OF LIGHT HARVESTING COMPLEX OF ALLOPHYCOCYANIN ALPHA AND BETA CHAINS/CORE-LINKER COMPLEX AP*LC7.8


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.211 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural analysis at 2.2 A of orthorhombic crystals presents the asymmetry of the allophycocyanin-linker complex, AP.LC7.8, from phycobilisomes of Mastigocladus laminosus.

Reuter, W.Wiegand, G.Huber, R.Than, M.E.

(1999) Proc Natl Acad Sci U S A 96: 1363-1368

  • DOI: 10.1073/pnas.96.4.1363
  • Primary Citation of Related Structures:  
    1B33

  • PubMed Abstract: 
  • An electrophoretically purified allophycocyanin-linker complex, AP. LC7.8, from phycobilisomes of Mastigocladus laminosus has been crystallized in the orthorhombic space group P212121. Cryocrystallographic x-ray measurements enabled the structural analysis of the complex at a resolution of 2 ...

    An electrophoretically purified allophycocyanin-linker complex, AP. LC7.8, from phycobilisomes of Mastigocladus laminosus has been crystallized in the orthorhombic space group P212121. Cryocrystallographic x-ray measurements enabled the structural analysis of the complex at a resolution of 2.2 A. The asymmetric unit contains two side-to-side associated "trimeric" (alphabeta)3 allophycocyanin complexes comprising the linker polypeptide in a defined orientation inside the trimer. The linker representing a protein fold related to the prosegment of procarboxypeptidase A is in contact with only two of the three beta-subunits and directly interacts with the corresponding chromophores of these proteins. In addition to a modulation of the chromophores' spectral properties, the linker polypeptide attracts the alphabeta-subcomplexes, thereby bringing the beta-chromophores closer together. These results will enable interpretations of energy-transfer mechanisms within phycobiliproteins.


    Related Citations: 
    • Isolation, Crystallization, Crystal Structure Analysis and Refinement of Allophycocyanin from the Cyanobacterium Spirulina Platensis at 2.3 A Resolution
      Brejc, K., Ficner, R., Huber, R., Steinbacher, S.
      (1995) J Mol Biol 249: 424
    • Minor Polypeptides from the Cyanobacterium Mastigocladus Laminosus
      Fueglistaller, P., Ruembli, R., Suter, F., Zuber, H.
      (1984) Hoppe Seylers Z Physiol Chem 365: 1085
    • The Complete Amino Acid Sequence of Both Subunits of Allophycocyanin, a Light Harvesting Protein-Pigment Complex from the Cyanobacterium Mastigocladus Laminosus
      Sidler, W., Gysi, J., Isker, E., Zuber, H.
      (1981) Hoppe Seylers Z Physiol Chem 362: 611

    Organizational Affiliation

    Max-Planck-Institut für Biochemie, Am Klopferspitz 18A, D-82158 Martinsried, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ALLOPHYCOCYANIN, ALPHA CHAINA, C, E, H, J, L160Mastigocladus laminosusMutation(s): 0 
Gene Names: apcA
UniProt
Find proteins for P00315 (Mastigocladus laminosus)
Explore P00315 
Go to UniProtKB:  P00315
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ALLOPHYCOCYANIN, BETA CHAINB, D, F, I, K, M161Mastigocladus laminosusMutation(s): 1 
Gene Names: apcB
UniProt
Find proteins for P00318 (Mastigocladus laminosus)
Explore P00318 
Go to UniProtKB:  P00318
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
PHYCOBILISOME 7.8 KD LINKER POLYPEPTIDEG [auth N], N [auth O]67Mastigocladus laminosusMutation(s): 0 
Gene Names: apcC
UniProt
Find proteins for P20116 (Mastigocladus laminosus)
Explore P20116 
Go to UniProtKB:  P20116
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CYC (Subject of Investigation/LOI)
Query on CYC

Download Ideal Coordinates CCD File 
AA [auth K] , BA [auth L] , DA [auth M] , Q [auth C] , S [auth D] , T [auth E] , V [auth F] , W [auth H] , 
AA [auth K],  BA [auth L],  DA [auth M],  Q [auth C],  S [auth D],  T [auth E],  V [auth F],  W [auth H],  X [auth I],  Y [auth J]
PHYCOCYANOBILIN
C33 H40 N4 O6
VXTXPYZGDQPMHK-GMXXPEQVSA-N
 Ligand Interaction
BLA (Subject of Investigation/LOI)
Query on BLA

Download Ideal Coordinates CCD File 
O [auth A], P [auth B]BILIVERDINE IX ALPHA
C33 H34 N4 O6
GWZYPXHJIZCRAJ-SRVCBVSDSA-N
 Ligand Interaction
BO4
Query on BO4

Download Ideal Coordinates CCD File 
CA [auth L], R [auth C], U [auth E], Z [auth J]BORATE ION
B H4 O4
KCFLOKKYWBPKFN-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MEN
Query on MEN
B, D, F, I, K, ML-PEPTIDE LINKINGC5 H10 N2 O3ASN
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.211 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 176.12α = 90
b = 151.9β = 90
c = 137.85γ = 90
Software Package:
Software NamePurpose
AMoREphasing
X-PLORrefinement
MOSFLMdata reduction
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-02-23
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance