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High resolution crystal structure of pterin-4a-carbinolamine dehydratase from Toxoplasma gondii

X-ray diffraction
1.6Å resolution
PDB entry 2v6u coloured by chain, front view.
PDB entry 2v6u coloured by chain, side view.
PDB entry 2v6u coloured by chain, top view.
Source organism: Toxoplasma gondii RH
Assembly composition:
homo tetramer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: 4a-hydroxytetrahydrobiopterin dehydratase
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Multimeric state: homo tetramer
Accessible surface area: 18649.24 Å2
Buried surface area: 6090.34 Å2
Dissociation area: 2,891.89 Å2
Dissociation energy (ΔGdiss): -0.08 kcal/mol
Dissociation entropy (TΔSdiss): 34.83 kcal/mol
Symmetry number: 4
PDBe Complex ID: PDB-CPX-173878

Macromolecules

4a-hydroxytetrahydrobiopterin dehydratase
Chains: A, B
Length: 104 amino acids
Theoretical weight: 11.95 KDa
Source organism: Toxoplasma gondii RH
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q2Q449 (Residues: 1-104; Coverage: 100%)
Gene names: TGRH88_045670, pcd
Pfam: Pterin 4 alpha carbinolamine dehydratase
InterPro:
CATH: Transcriptional coactivator/pterin dehydratase
4a-hydroxytetrahydrobiopterin dehydratase in PDB entry 2v6u, assembly 1, front view.
4a-hydroxytetrahydrobiopterin dehydratase in PDB entry 2v6u, assembly 1, side view.
4a-hydroxytetrahydrobiopterin dehydratase in PDB entry 2v6u, assembly 1, top view.
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