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3IKP

Crystal structure of inositol phosphate bound trimeric human lung surfactant protein D

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B, C
(A, B, C)
Pulmonary surfactant-associated protein Dpolymer17718835.03UniProt (P35247)
Pfam (PF01391)
Pfam (PF09006)
Pfam (PF00059)
Homo sapiens (human)SP-D, PSP-D, Lung surfactant protein D
2D, E, F, G, H...
(A, B, C)
CALCIUM IONnon-polymer40.110Chemie (CA)
3K, O
(B, C)
D-MYO-INOSITOL-1-PHOSPHATEnon-polymer258.12Chemie (IPD)
4P, Q, R
(A, B, C)
waterwater18.0440Chemie (HOH)
Sequence modifications
A, B, C: 179 - 355 (UniProt: P35247)
PDBExternal DatabaseDetails
Ser 180Pro 200engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains3
Total formula weight56504.9
Non-Polymers*Number of molecules12
Total formula weight917.0
All*Total formula weight57421.9
*Water molecules are not included.

246031

PDB entries from 2025-12-10

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