Voltage-gated potassium channel subunit beta-3 (K(+) channel subunit beta-3) (Kv-beta-3)
1_MQVSI 6_ ACTEQ 11_ NLRSR 16_ SSEDR 21_ LCGPR 26_ PGPGG 31_ GNGGP 36_ AGGGH 41_ GNPPG 46_ GGGSG 51_ PKARA 56_ ALVPR 61_ PPAPA 66_ GALRE 71_ STGRG 76_ TGMKY 81_ RNLGK 86_ SGLRV 91_ SCLGL 96_ GTWVT 101_ FGSQI 106_ SDETA 111_ EDVLT 116_ VAYEH 121_ GVNLF 126_ DTAEV 131_ YAAGK 136_ AERTL 141_ GNILK 146_ SKGWR 151_ RSSYV 156_ ITTKI 161_ FWGGQ 166_ AETER 171_ GLSRK 176_ HIIEG 181_ LRGSL 186_ ERLQL 191_ GYVDI 196_ VFANR 201_ SDPNC 206_ PMEEI 211_ VRAMT 216_ YVINQ 221_ GLALY 226_ WGTSR 231_ WGAAE 236_ IMEAY 241_ SMARQ 246_ FNLIP 251_ PVCEQ 256_ AEHHL 261_ FQREK 266_ VEMQL 271_ PELYH 276_ KIGVG 281_ SVTWY 286_ PLACG 291_ LITSK 296_ YDGRV 301_ PDTCR 306_ ASIKG 311_ YQWLK 316_ DKVQS 321_ EDGKK 326_ QQAKV 331_ MDLLP 336_ VAHQL 341_ GCTVA 346_ QLAIA 351_ WCLRS 356_ EGVSS 361_ VLLGV 366_ SSAEQ 371_ LIEHL 376_ GALQV 381_ LSQLT 386_ PQTVM 391_ EIDGL 396_LGNKP
1: Regulatory subunit of the voltage-gated potassium (Kv) channels composed of pore-forming and potassium-conducting alpha subunits and of regulatory beta subunit (PubMed:9857044). The beta-3/KCNAB3 subunit may mediate closure of potassium channels (By similarity). Increases inactivation of Kv1.5/KCNA5 alpha subunit-containing channels (PubMed:9857044). May display nicotinamide adenine dinucleotide phosphate (NADPH)-dependent aldoketoreductase activity (By similarity). The binding of oxidized and reduced NADP(H) cofactors may be required for the regulation of potassium channel activity (By similarity)