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9OA8

Cryo-EM structure of KCa3.1/calmodulin channel in complex with NS309

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B, C, D
(A, B, C, D)
Intermediate conductance calcium-activated potassium channel protein 4polymer37842598.64UniProt (O15554)
Pfam (PF03530)
Pfam (PF07885)
Pfam (PF02888)
Homo sapiens (human)SKCa 4,SKCa4,hSK4,Gardos channel,IKCa1,hIK1,KCa3.1,Putative Gardos channel,hKCa4
2E, F, G, H
(E, F, G, H)
Calmodulin-1polymer14616521.14UniProt (P0DP29)
Pfam (PF13499)
Rattus norvegicus (Norway rat)
3I, J, K
(A)
POTASSIUM IONnon-polymer39.13Chemie (K)
4L, O, R, U
(E, F, G, H)
(3E)-6,7-dichloro-3-(hydroxyimino)-1,3-dihydro-2H-indol-2-onenon-polymer231.04Chemie (1KP)
5M, N, P, Q, S...
(E, F, G, H)
CALCIUM IONnon-polymer40.18Chemie (CA)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains8
Total formula weight236478.9
Non-Polymers*Number of molecules15
Total formula weight1362.1
All*Total formula weight237841.0
*Water molecules are not included.

246905

PDB entries from 2025-12-31

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