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4QE7

Open MthK pore structure soaked in 10 mM Ba2+/100 mM Na+

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Calcium-gated potassium channel MthKpolymer818935.51UniProt (O27564)
Pfam (PF07885)
Methanothermobacter thermautotrophicus
2B, C, D
(A)
BARIUM IONnon-polymer137.33Chemie (BA)
3E
(A)
waterwater18.028Chemie (HOH)
Sequence modifications
A: 19 - 99 (UniProt: O27564)
PDBExternal DatabaseDetails
His 68Ser 68engineered mutation
Cys 77Val 77engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight8935.5
Non-Polymers*Number of molecules3
Total formula weight412.0
All*Total formula weight9347.4
*Water molecules are not included.

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PDB entries from 2025-12-10

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