Voltage-gated potassium channel subunit beta (KCAB) from Arabidopsis thaliana and Egeria densa are founding members of aldo-keto reductase family 6 member C1 (AKR6C1) and C2 (AKR6C2), respectively. KCAB, also called Shaker channel b-subunit, or K(+) channel subunit beta, or potassium voltage beta 1, or KV-beta1, or KAB1, is a probable accessory potassium channel protein which modulates the activity of the pore-forming alpha subunit.
Jiyao W et al.(2023). "The conserved domain database in 2023.",