Structure analysis

Structure of Phycoerythrobilin Synthase PebS from the Cyanophage P-SSM2 in Complex with the bound Substrate Biliverdin IXa

X-ray diffraction
1.8Å resolution
Source organism: Prochlorococcus phage P-SSM2
Assembly composition:
monomeric (preferred)
Entry contents: 1 distinct polypeptide molecule

Assemblies

Assembly 1 (preferred)
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Multimeric state: monomeric
Accessible surface area: 9465.65 Å2
Buried surface area: 1256.91 Å2
Dissociation area: 628.45 Å2
Dissociation energy (ΔGdiss): 14.24 kcal/mol
Dissociation entropy (TΔSdiss): 5.9 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-176753
Assembly 2
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Multimeric state: monomeric
Accessible surface area: 9297.66 Å2
Buried surface area: 1258.94 Å2
Dissociation area: 629.47 Å2
Dissociation energy (ΔGdiss): 14.8 kcal/mol
Dissociation entropy (TΔSdiss): 5.91 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-176753
Assembly 3
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Multimeric state: monomeric
Accessible surface area: 9503.53 Å2
Buried surface area: 1255.09 Å2
Dissociation area: 627.55 Å2
Dissociation energy (ΔGdiss): 13.8 kcal/mol
Dissociation entropy (TΔSdiss): 5.87 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-176753
Assembly 4
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Multimeric state: monomeric
Accessible surface area: 9662.44 Å2
Buried surface area: 1256.06 Å2
Dissociation area: 628.03 Å2
Dissociation energy (ΔGdiss): 16.37 kcal/mol
Dissociation entropy (TΔSdiss): 5.92 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-176753

Macromolecules

Chains: A, B, C, D
Length: 233 amino acids
Theoretical weight: 27.62 KDa
Source organism: Prochlorococcus phage P-SSM2
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q58MU6 (Residues: 1-233; Coverage: 100%)
Gene names: PSSM2_058, pebS
Pfam: Ferredoxin-dependent bilin reductase
InterPro: Ferredoxin-dependent bilin reductase
CATH: oxygen-dependent coproporphyrinogen oxidase

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