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6B8L

Crystal Structure of the Apo/CaM:Kv7.4 (KCNQ4) AB Domain Complex

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, C, E, G
(A, C, E, G)
Potassium voltage-gated channel subfamily KQT member 4polymer829913.74UniProt (P56696)Homo sapiens (Human)KQT-like 4,Potassium channel subunit alpha KvLQT4,Voltage-gated potassium channel subunit Kv7.4
2B, D, F, H
(B, D, F, H)
Calmodulin-1polymer14916852.54UniProt (P0DP23)
Pfam (PF13499)
Homo sapiens (Human)
3I, J, K, L, M
(D, G, H)
SULFATE IONnon-polymer96.15Chemie (SO4)
4N, O, P, Q, R...
(A, B, C, D, E...)
waterwater18.0284Chemie (HOH)
Sequence modifications
A, C, E, G: 325 - 367 (UniProt: P56696)
PDBExternal DatabaseDetails
Gly 322-expression tag
His 323-expression tag
Met 324-expression tag
A, C, E, G: 524 - 557 (UniProt: P56696)
PDBExternal DatabaseDetails
Lys 368-linker
Leu 369-linker
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains8
Total formula weight107065.1
Non-Polymers*Number of molecules5
Total formula weight480.3
All*Total formula weight107545.4
*Water molecules are not included.

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PDB entries from 2025-06-11

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