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Ca+2-activated K+ channel
Function:
- alpha subunit(s) including KCNMA1 seem to form K+ channels
- beta subunit(s) seem to regulate alpha subunits
General
K+ channel
multisubunit protein
Properties
COMPARTMENT: plasma membrane
MOTIF: membrane region
ION-PERMEABILITY: K+
SUBUNITS: K+ channel subfamily N member 4
COMPARTMENT: plasma membrane
MOTIF: cytoplasmic domain {1-28}
transmembrane domain {29-49}
exoplasmic loop {50-58}
transmembrane domain {59-79}
cytoplasmic loop {80-107}
transmembrane domain {108-128}
exoplasmic loop {129-142}
transmembrane domain {143-163}
cytoplasmic loop {164-206}
transmembrane domain {207-227}
exoplasmic loop {228-264}
MOTIF: H5 (K+) pore-forming region {241-261}
transmembrane domain {265-285}
cytoplasmic domain {286-427}
MOTIF: calmodulin binding site
SITE: 286-347
FOR-BINDING-OF: calmodulin
ION-PERMEABILITY: K+
K+ channel subfamily M
MOTIF: membrane region
ION-PERMEABILITY: K+
K+ channel subfamily N
MOTIF: membrane region
ION-PERMEABILITY: K+
Components
K+ channel subfamily M
K+ channel subfamily N
K+ channel subfamily N member 4; intermediate conductance Ca+2-activated K+ channel protein 4; SK4; SKCa 4; SKCa4; IKCa1; IK1; KCa3.1; KCa4; Gardos channel (KCNN4, IK1, IKCA1, KCA4, SK4)