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Crystal Structure of Schizosaccharomyces pombe Riboflavin Kinase Reveals a Novel ATP and Riboflavin Binding Fold

X-ray diffraction
2Å resolution
PDB entry 1n06 coloured by chain, front view.
PDB entry 1n06 coloured by chain, side view.
PDB entry 1n06 coloured by chain, top view.
Source organism: Schizosaccharomyces pombe
Assembly composition:
monomeric (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Riboflavin kinase
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Multimeric state: monomeric
Accessible surface area: 8861.92 Å2
Buried surface area: 809.99 Å2
Dissociation area: 405 Å2
Dissociation energy (ΔGdiss): 6.71 kcal/mol
Dissociation entropy (TΔSdiss): 4.92 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-130800
Assembly 2
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Assembly Name: Riboflavin kinase
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Multimeric state: monomeric
Accessible surface area: 8889.55 Å2
Buried surface area: 803.81 Å2
Dissociation area: 401.9 Å2
Dissociation energy (ΔGdiss): 6.57 kcal/mol
Dissociation entropy (TΔSdiss): 4.95 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-130800

Macromolecules

Riboflavin kinase
Chains: A, B
Length: 163 amino acids
Theoretical weight: 18.94 KDa
Source organism: Schizosaccharomyces pombe
Expression system: Escherichia coli
UniProt:
  • Canonical: O74866 (Residues: 1-163; Coverage: 100%)
Gene names: SPCC18.16c, fmn1
Pfam: Riboflavin kinase
InterPro:
CATH: Riboflavin kinase-like
SCOP: ATP-dependent riboflavin kinase-like
Riboflavin kinase in PDB entry 1n06, assembly 1, front view.
Riboflavin kinase in PDB entry 1n06, assembly 1, side view.
Riboflavin kinase in PDB entry 1n06, assembly 1, top view.
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