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4RFD

Human carbonic anhydrase II in complex with 4-(4-sulfamoyl-phenoxy)-butylammonium

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Carbonic anhydrase 2polymer26029289.11UniProt (P00918)
Pfam (PF00194)
Homo sapiens (human)Carbonate dehydratase II, Carbonic anhydrase C, CAC, Carbonic anhydrase II, CA-II
2B
(A)
ZINC IONnon-polymer65.41Chemie (ZN)
3C, D
(A)
4-(4-sulfamoyl-phenoxy)-butylammoniumnon-polymer244.32Chemie (3O5)
4E
(A)
BICARBONATE IONnon-polymer61.01Chemie (BCT)
5F
(A)
waterwater18.0140Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight29289.1
Non-Polymers*Number of molecules4
Total formula weight615.0
All*Total formula weight29904.1
*Water molecules are not included.

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PDB entries from 2025-12-10

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