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: 9500 Å2
Buried surface area: 1300 Å2
Dissociation area: 650 Å2
Dissociation energy (ΔGdiss): 14 kcal/mol
Dissociation entropy (TΔSdiss): 6 kcal/mol
Interface energy (ΔGint): -17 kcal/mol
Symmetry number: 1
Assembly 2
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Multimeric state: monomeric
Accessible surface area: 9300 Å2
Buried surface area: 1300 Å2
Dissociation area: 650 Å2
Dissociation energy (ΔGdiss): 15 kcal/mol
Dissociation entropy (TΔSdiss): 6 kcal/mol
Interface energy (ΔGint): -17 kcal/mol
Symmetry number: 1
Assembly 3
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Multimeric state: monomeric
Accessible surface area: 9500 Å2
Buried surface area: 1300 Å2
Dissociation area: 650 Å2
Dissociation energy (ΔGdiss): 14 kcal/mol
Dissociation entropy (TΔSdiss): 6 kcal/mol
Interface energy (ΔGint): -16 kcal/mol
Symmetry number: 1
Assembly 4
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Multimeric state: monomeric
Accessible surface area: 9700 Å2
Buried surface area: 1300 Å2
Dissociation area: 650 Å2
Dissociation energy (ΔGdiss): 16 kcal/mol
Dissociation entropy (TΔSdiss): 6 kcal/mol
Interface energy (ΔGint): -18 kcal/mol
Symmetry number: 1

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

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