KCNMB4
potassium calcium-activated channel subfamily M regulatory beta subunit 4
Summary
MaxiK channels are large conductance, voltage and calcium-sensitive potassium channels which are fundamental to the control of smooth muscle tone and neuronal excitability. MaxiK channels can be formed by 2 subunits: the pore-forming alpha subunit and the modulatory beta subunit. The protein encoded by this gene is an auxiliary beta subunit which slows activation kinetics, leads to steeper calcium sensitivity, and shifts the voltage range of current activation to more negative potentials than does the beta 1 subunit. [provided by RefSeq, Jul 2008]
Known Variants12 total
| rsid | Position (GRCh37) | Alleles | Class | ClinVar |
|---|---|---|---|---|
| rs2499348909 | 12:70,760,530 | G/T | — | uncertain significance |
| rs1414173995 | 12:70,760,537 | A/C | — | uncertain significance |
| rs374031800 | 12:70,760,590 | A/G | — | uncertain significance |
| rs36123350 | 12:70,785,226 | A/T | intron variant | — |
| rs79237130 | 12:70,790,112 | T/A | intron variant | — |
| rs146558731 | 12:70,794,092 | C/T | — | uncertain significance |
| rs767144236 | 12:70,824,353 | G/T | — | uncertain significance |
| rs150219259 | 12:70,824,374 | A/G | — | uncertain significance |
| rs1379749132 | 12:70,824,385 | G/T | — | uncertain significance |
| rs780176319 | 12:70,824,419 | C/T | — | uncertain significance |
| rs906603152 | 12:70,824,420 | G/A | — | uncertain significance |
| rs398702 | 12:70,827,779 | G/T | 3 prime UTR variant | — |
Gene information from NCBI Gene. Variant classifications from ClinVar.