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9ZRK

Cryo-EM structure of KCa3.1_I/calmodulin channel in complex with SKA111.

This is a non-PDB format compatible entry.
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 4polymer36040753.64UniProt (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 (P0DP23)
Pfam (PF13499)
Homo sapiens (human)
3I, N, O, P
(A, B, C, D)
5-methylnaphtho[1,2-d][1,3]thiazol-2-aminenon-polymer214.34Chemie (A1C3U)
4J, K, L, M
(A)
POTASSIUM IONnon-polymer39.14Chemie (K)
5AA, BA, CA, DA, EA...
(G, H, E, F)
CALCIUM IONnon-polymer40.116Chemie (CA)
Sequence modifications
A, B, C, D: 9 - 386 (UniProt: O15554)
PDBExternal DatabaseDetails
-Gly 124deletion
-Pro 125deletion
-Pro 126deletion
-Cys 127deletion
-Val 128deletion
-Gln 129deletion
-Asp 130deletion
-Leu 131deletion
-Gly 132deletion
-Ala 133deletion
-Pro 134deletion
-Leu 135deletion
-Thr 136deletion
-Ser 137deletion
-Pro 138deletion
-Gln 139deletion
-Pro 140deletion
-Trp 141deletion
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains8
Total formula weight229098.7
Non-Polymers*Number of molecules24
Total formula weight1654.8
All*Total formula weight230753.4
*Water molecules are not included.

247947

PDB entries from 2026-01-21

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