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1SU4

Crystal structure of calcium ATPase with two bound calcium ions

Replaces:  1EUL
Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Sarcoplasmic/endoplasmic reticulum calcium ATPase 1polymer994109602.61UniProt (P04191)
Pfam (PF00690)
Pfam (PF00122)
Pfam (PF13246)
Pfam (PF00702)
Pfam (PF00689)
Oryctolagus cuniculus (rabbit)Calcium-transproting ATPase sarcoplasmic reticulum type, Fast twitch skeletal muscle, SERCA1A
2B, C
(A)
CALCIUM IONnon-polymer40.12Chemie (CA)
3D
(A)
SODIUM IONnon-polymer23.01Chemie (NA)
4E
(A)
waterwater18.0117Chemie (HOH)
Sequence modifications
A: 1 - 994 (UniProt: P04191)
PDBExternal DatabaseDetails
Gly 994Asp 994SEE REMARK 999
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight109602.6
Non-Polymers*Number of molecules3
Total formula weight103.1
All*Total formula weight109705.7
*Water molecules are not included.

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PDB entries from 2025-10-22

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