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CRYSTAL STRUCTURE OF C-PHYCOCYANIN FROM SPIRULINA PLATENSIS

X-ray diffraction
2.2Å resolution
PDB entry 1gh0 coloured by chain, front view.
PDB entry 1gh0 coloured by chain, side view.
PDB entry 1gh0 coloured by chain, top view.
Source organism: Arthrospira platensis
Assemblies composition:
hetero dodecamer (preferred)
hetero 24-mer
Entry contents: 2 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Assembly Name: C-phycocyanin beta subunit and C-phycocyanin alpha subunit
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Multimeric state: hetero dodecamer
Accessible surface area: 68171.32 Å2
Buried surface area: 61921.29 Å2
Dissociation area: 6,402.31 Å2
Dissociation energy (ΔGdiss): 66.24 kcal/mol
Dissociation entropy (TΔSdiss): 17.53 kcal/mol
Symmetry number: 6
PDBe Complex ID: PDB-CPX-159853
Assembly 2
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Assembly Name: C-phycocyanin beta subunit and C-phycocyanin alpha subunit
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Multimeric state: hetero dodecamer
Accessible surface area: 68137.04 Å2
Buried surface area: 61859.3 Å2
Dissociation area: 6,482.52 Å2
Dissociation energy (ΔGdiss): 66.24 kcal/mol
Dissociation entropy (TΔSdiss): 17.55 kcal/mol
Symmetry number: 6
PDBe Complex ID: PDB-CPX-159853
Assembly 3
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Assembly Name: C-phycocyanin beta subunit and C-phycocyanin alpha subunit
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Multimeric state: hetero 24-mer
Accessible surface area: 135037.73 Å2
Buried surface area: 125051.22 Å2
Dissociation area: 13,137.45 Å2
Dissociation energy (ΔGdiss): 134.38 kcal/mol
Dissociation entropy (TΔSdiss): 35.64 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-159852
Assembly 4
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Assembly Name: C-phycocyanin beta subunit and C-phycocyanin alpha subunit
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Multimeric state: hetero 24-mer
Accessible surface area: 134511.04 Å2
Buried surface area: 125577.9 Å2
Dissociation area: 13,019.68 Å2
Dissociation energy (ΔGdiss): 133.49 kcal/mol
Dissociation entropy (TΔSdiss): 35.6 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-159852

Macromolecules

C-phycocyanin alpha subunit
Chains: A, C, E, G, I, K, M, O, Q, S, U, W
Length: 162 amino acids
Theoretical weight: 17.6 KDa
Source organism: Arthrospira platensis
UniProt:
  • Canonical: P72509 (Residues: 1-162; Coverage: 100%)
Gene name: cpcA
Pfam: Phycobilisome protein
InterPro:
CATH: Phycocyanins
SCOP: Phycocyanin-like phycobilisome proteins
C-phycocyanin alpha subunit in PDB entry 1gh0, assembly 1, front view.
C-phycocyanin alpha subunit in PDB entry 1gh0, assembly 1, side view.
C-phycocyanin alpha subunit in PDB entry 1gh0, assembly 1, top view.
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C-phycocyanin beta subunit
Chains: B, D, F, H, J, L, N, P, R, T, V, X
Length: 172 amino acids
Theoretical weight: 18.09 KDa
Source organism: Arthrospira platensis
UniProt:
  • Canonical: P72508 (Residues: 1-172; Coverage: 100%)
Gene name: cpcB
Pfam: Phycobilisome protein
InterPro:
CATH: Phycocyanins
SCOP: Phycocyanin-like phycobilisome proteins
C-phycocyanin beta subunit in PDB entry 1gh0, assembly 1, front view.
C-phycocyanin beta subunit in PDB entry 1gh0, assembly 1, side view.
C-phycocyanin beta subunit in PDB entry 1gh0, assembly 1, top view.
Molecule details ›

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