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5K89

Crystal Structure of Human Calcium-Bound S100A1

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B, C
(A, C, H)
Protein S100-A1polymer9410556.83UniProt (P23297)
Pfam (PF01023)
Pfam (PF00036)
Homo sapiens (Human)S-100 protein alpha chain,S-100 protein subunit alpha,S100 calcium-binding protein A1
2D
(A)
2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOLnon-polymer122.11Chemie (TRS)
3E, F, G, H, I...
(A, C, H)
CALCIUM IONnon-polymer40.16Chemie (CA)
4K, L, M
(A, C, H)
waterwater18.014Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains3
Total formula weight31670.3
Non-Polymers*Number of molecules7
Total formula weight362.6
All*Total formula weight32033.0
*Water molecules are not included.

247536

PDB entries from 2026-01-14

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