377916533ENSG00000145936ENSMUSG00000020155Q16558Q8CAE3NM_004137NM_031169NP_004128NP_112446Calcium-activated potassium channel subunit beta-1 is a protein that in humans is encoded by the KCNMB1 gene.

[5][6][7] MaxiK channels are large conductance, voltage and calcium-sensitive potassium channels which are fundamental to the control of smooth muscle tone and neuronal excitability.

Intracellular calcium regulates the physical association between the alpha and beta subunits.

Beta-1 is also known to be expressed in urinary bladder and in some regions of the brain.

[8] This article incorporates text from the United States National Library of Medicine, which is in the public domain.