| 2963 | Kcnn2 | potassium calcium-activated channel subfamily N member 2 | ENCODES a protein that exhibits calmodulin binding; small conductance calcium-activated potassium channel activity; alpha-actinin binding (ortholog); INVOLVED IN positive regulation of potassium ion transport; potassium ion transport; regulation of neuronal synaptic plasticity; PARTICIPATES IN calci um/calcium-mediated signaling pathway; bile acid transport pathway; ASSOCIATED WITH tremors; ASSOCIATED WITH alcohol use disorder; essential tremor; atrial fibrillation (ortholog); FOUND IN dendritic spine; membrane; neuronal cell body; INTERACTS WITH (+)-pilocarpine; 2,3,7,8-tetrachlorodibenzodioxine; acetamide | 18 | 40004693 | 40445043 | Rat | 217 | symbol , PhenoGen | gene, protein-coding, VALIDATED [RefSeq] |
| 734125 | KCNN2 | potassium calcium-activated channel subfamily N member 2 | Action potentials in vertebrate neurons are followed by an afterhyperpolarization (AHP) that may persist for several seconds and may have profound consequences for the firing pattern of the neuron. Each component of the AHP is kinetically distinct and is mediated by different calcium-activated potas sium channels. The protein encoded by this gene is activated before membrane hyperpolarization and is thought to regulate neuronal excitability by contributing to the slow component of synaptic AHP. This gene is a member of the KCNN family of potassium channel genes. The encoded protein is an integral membrane protein that forms a voltage-independent calcium-activated channel with three other calmodulin-binding subunits. Alternate splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2013] | 5 | 114055978 | 114496496 | Human | 259 | symbol , COSMIC , Human Proteome Map | gene, protein-coding, REVIEWED [RefSeq] |
| 734126 | Kcnn2 | potassium intermediate/small conductance calcium-activated channel, subfamily N, member 2 | Enables small conductance calcium-activated potassium channel activity. Involved in membrane repolarization during atrial cardiac muscle cell action potential; modulation of chemical synaptic transmission; and potassium ion transmembrane transport. Located in several cellular components, including T -tubule; Z disc; and smooth endoplasmic reticulum. Is active in glutamatergic synapse and postsynaptic membrane. Is expressed in brain; heart; and heart ventricle. Used to study Parkinson's disease. Human ortholog(s) of this gene implicated in myoclonic dystonia 34. Orthologous to human KCNN2 (potassium calcium-activated channel subfamily N member 2). [provided by Alliance of Genome Resources, Jul 2025] | 18 | 45401754 | 45818954 | Mouse | 248 | symbol , PhenoGen , description | gene, protein-coding, VALIDATED [RefSeq] |
| 8973442 | Kcnn2 | potassium calcium-activated channel subfamily N member 2 | ENCODES a protein that exhibits alpha-actinin binding (ortholog); calcium-activated potassium channel activity (ortholog); calmodulin binding (ortholog); INVOLVED IN membrane repolarization during atrial cardiac muscle cell action potential (ortholog); modulation of chemical synaptic transmission (o rtholog); monoatomic ion transport (ortholog); PARTICIPATES IN calcium/calcium-mediated signaling pathway; ASSOCIATED WITH alcohol use disorder (ortholog); atrial fibrillation (ortholog); cardiac arrest (ortholog); FOUND IN cell surface (ortholog); dendritic spine (ortholog); glutamatergic synapse (ortholog) | NW_004955408 | 34223523 | 34366191 | Chinchilla | 60 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 11800057 | KCNN2 | potassium calcium-activated channel subfamily N member 2 | ENCODES a protein that exhibits alpha-actinin binding (ortholog); calmodulin binding (ortholog); monoatomic ion channel activity (ortholog); INVOLVED IN membrane repolarization during atrial cardiac muscle cell action potential (ortholog); modulation of chemical synaptic transmission (ortholog); mon oatomic ion transport (ortholog); PARTICIPATES IN calcium/calcium-mediated signaling pathway; ASSOCIATED WITH alcohol use disorder (ortholog); atrial fibrillation (ortholog); cardiac arrest (ortholog); FOUND IN cell surface (ortholog); dendritic spine (ortholog); glutamatergic synapse (ortholog) | 5 | 109722916 | 109862747 | Bonobo | 56 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 12247289 | KCNN2 | potassium calcium-activated channel subfamily N member 2 | ENCODES a protein that exhibits alpha-actinin binding (ortholog); calmodulin binding (ortholog); inward rectifier potassium channel activity (ortholog); INVOLVED IN membrane repolarization during atrial cardiac muscle cell action potential (ortholog); modulation of chemical synaptic transmission (or tholog); monoatomic ion transport (ortholog); PARTICIPATES IN calcium/calcium-mediated signaling pathway; ASSOCIATED WITH alcohol use disorder (ortholog); atrial fibrillation (ortholog); cardiac arrest (ortholog); FOUND IN cell surface (ortholog); dendritic spine (ortholog); glutamatergic synapse (ortholog) | 11 | 4279362 | 4423080 | Dog | 61 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 12626373 | Kcnn2 | potassium calcium-activated channel subfamily N member 2 | ENCODES a protein that exhibits alpha-actinin binding (ortholog); calmodulin binding (ortholog); inward rectifier potassium channel activity (ortholog); INVOLVED IN membrane repolarization during atrial cardiac muscle cell action potential (ortholog); modulation of chemical synaptic transmission (or tholog); monoatomic ion transport (ortholog); PARTICIPATES IN calcium/calcium-mediated signaling pathway; ASSOCIATED WITH alcohol use disorder (ortholog); atrial fibrillation (ortholog); cardiac arrest (ortholog); FOUND IN cell surface (ortholog); dendritic spine (ortholog); glutamatergic synapse (ortholog) | NW_004937043 | 133981 | 269593 | Squirrel | 55 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 18908090 | Kcnn2 | potassium calcium-activated channel subfamily N member 2 | ENCODES a protein that exhibits alpha-actinin binding (ortholog); calmodulin binding (ortholog); inward rectifier potassium channel activity (ortholog); INVOLVED IN membrane repolarization during atrial cardiac muscle cell action potential (ortholog); modulation of chemical synaptic transmission (or tholog); monoatomic ion transport (ortholog); PARTICIPATES IN calcium/calcium-mediated signaling pathway; ASSOCIATED WITH alcohol use disorder (ortholog); atrial fibrillation (ortholog); cardiac arrest (ortholog); FOUND IN cell surface (ortholog); dendritic spine (ortholog); glutamatergic synapse (ortholog) | | | | Naked Mole-Rat | 55 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 14147048 | KCNN2 | potassium calcium-activated channel subfamily N member 2 | ENCODES a protein that exhibits alpha-actinin binding (ortholog); calmodulin binding (ortholog); inward rectifier potassium channel activity (ortholog); INVOLVED IN membrane repolarization during atrial cardiac muscle cell action potential (ortholog); modulation of chemical synaptic transmission (or tholog); monoatomic ion transport (ortholog); PARTICIPATES IN calcium/calcium-mediated signaling pathway; ASSOCIATED WITH alcohol use disorder (ortholog); atrial fibrillation (ortholog); cardiac arrest (ortholog); FOUND IN cell surface (ortholog); dendritic spine (ortholog); glutamatergic synapse (ortholog) | | | | Pig | 61 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 626103284 | Kcnn2 | potassium calcium-activated channel subfamily N member 2 | ENCODES a protein that exhibits alpha-actinin binding (ortholog); calcium-activated potassium channel activity (ortholog); calmodulin binding (ortholog); INVOLVED IN membrane repolarization during atrial cardiac muscle cell action potential (ortholog); modulation of chemical synaptic transmission (o rtholog); monoatomic ion transport (ortholog); PARTICIPATES IN calcium/calcium-mediated signaling pathway; ASSOCIATED WITH alcohol use disorder (ortholog); atrial fibrillation (ortholog); cardiac arrest (ortholog); FOUND IN cell surface (ortholog); dendritic spine (ortholog); glutamatergic synapse (ortholog) | | | | Black Rat | 60 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 18534831 | KCNN2 | potassium calcium-activated channel subfamily N member 2 | ENCODES a protein that exhibits alpha-actinin binding (ortholog); calmodulin binding (ortholog); monoatomic ion channel activity (ortholog); INVOLVED IN membrane repolarization during atrial cardiac muscle cell action potential (ortholog); modulation of chemical synaptic transmission (ortholog); mon oatomic ion transport (ortholog); PARTICIPATES IN calcium/calcium-mediated signaling pathway; ASSOCIATED WITH alcohol use disorder (ortholog); atrial fibrillation (ortholog); cardiac arrest (ortholog); FOUND IN cell surface (ortholog); dendritic spine (ortholog); glutamatergic synapse (ortholog) | | | | Green Monkey | 56 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 155237451 | kcnn2 | | | | | | Tropical Clawed Frog | | symbol | gene, null |
| 155237452 | kcnn2.L | | | | | | African Clawed Frog | | symbol | gene, null |
| 155256568 | kcnn2.S | | | | | | African Clawed Frog | | symbol | gene, null |
| 149735330 | Kcnn2Trdk | potassium calcium-activated channel subfamily N member 2; Trdk mutant | ASSOCIATED WITH tremors; ASSOCIATED WITH essential tremor | | | | Rat | 2 | symbol , description | gene, allele |