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Crystal structure of the trimeric neck and carbohydrate recognition domain of human surfactant protein D in complex with alpha methyl mannoside

X-ray diffraction
1.8Å resolution
PDB entry 3g81 coloured by chain, front view.
PDB entry 3g81 coloured by chain, side view.
PDB entry 3g81 coloured by chain, top view.
Source organism: Homo sapiens
Assembly composition:
homo trimer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Pulmonary surfactant-associated protein D
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Multimeric state: homo trimer
Accessible surface area: 20503.72 Å2
Buried surface area: 7809.94 Å2
Dissociation area: 3,016.43 Å2
Dissociation energy (ΔGdiss): 34.9 kcal/mol
Dissociation entropy (TΔSdiss): 25.49 kcal/mol
Symmetry number: 3
PDBe Complex ID: PDB-CPX-152870

Macromolecules

Pulmonary surfactant-associated protein D
Chains: A, B, C
Length: 160 amino acids
Theoretical weight: 17.27 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P35247 (Residues: 223-375; Coverage: 43%)
Gene names: COLEC7, PSPD, SFTP4, SFTPD
Pfam:
InterPro:
CATH: Mannose-Binding Protein A, subunit A
Pulmonary surfactant-associated protein D in PDB entry 3g81, assembly 1, front view.
Pulmonary surfactant-associated protein D in PDB entry 3g81, assembly 1, side view.
Pulmonary surfactant-associated protein D in PDB entry 3g81, assembly 1, top view.
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