KCNS1_CHLAE
ID KCNS1_CHLAE Reviewed; 529 AA.
AC A4K2Y2;
DT 29-MAY-2007, integrated into UniProtKB/Swiss-Prot.
DT 01-MAY-2007, sequence version 1.
DT 25-MAY-2022, entry version 50.
DE RecName: Full=Potassium voltage-gated channel subfamily S member 1;
DE AltName: Full=Delayed-rectifier K(+) channel alpha subunit 1;
DE AltName: Full=Voltage-gated potassium channel subunit Kv9.1;
GN Name=KCNS1;
OS Chlorocebus aethiops (Green monkey) (Cercopithecus aethiops).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini;
OC Cercopithecidae; Cercopithecinae; Chlorocebus.
OX NCBI_TaxID=9534;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=17267810; DOI=10.1101/gr.6004607;
RG NISC comparative sequencing program;
RA Hurle B., Swanson W., Green E.D.;
RT "Comparative sequence analyses reveal rapid and divergent evolutionary
RT changes of the WFDC locus in the primate lineage.";
RL Genome Res. 17:276-286(2007).
CC -!- FUNCTION: Potassium channel subunit that does not form functional
CC channels by itself. Can form functional heterotetrameric channels with
CC KCNB1 and KCNB2; modulates the delayed rectifier voltage-gated
CC potassium channel activation and deactivation rates of KCNB1 and KCNB2.
CC {ECO:0000250|UniProtKB:O35173}.
CC -!- SUBUNIT: Heteromultimer with KCNB1 and KCNB2. Does not form
CC homomultimers. {ECO:0000250|UniProtKB:O35173}.
CC -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000250|UniProtKB:O35173};
CC Multi-pass membrane protein {ECO:0000250|UniProtKB:O35173}. Note=May
CC not reach the plasma membrane but remain in an intracellular
CC compartment in the absence of KCNB1 or KCNB2.
CC {ECO:0000250|UniProtKB:O35173}.
CC -!- DOMAIN: The transmembrane segment S4 functions as voltage-sensor and is
CC characterized by a series of positively charged amino acids at every
CC third position. Channel opening and closing is effected by a
CC conformation change that affects the position and orientation of the
CC voltage-sensor paddle formed by S3 and S4 within the membrane. A
CC transmembrane electric field that is positive inside would push the
CC positively charged S4 segment outwards, thereby opening the pore, while
CC a field that is negative inside would pull the S4 segment inwards and
CC close the pore. Changes in the position and orientation of S4 are then
CC transmitted to the activation gate formed by the inner helix bundle via
CC the S4-S5 linker region. {ECO:0000250|UniProtKB:P63142}.
CC -!- SIMILARITY: Belongs to the potassium channel family. S (TC 1.A.1.2)
CC subfamily. Kv9.1/KCNS1 sub-subfamily. {ECO:0000305}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; DP000048; ABO53017.1; -; Genomic_DNA.
DR AlphaFoldDB; A4K2Y2; -.
DR SMR; A4K2Y2; -.
DR GO; GO:0048471; C:perinuclear region of cytoplasm; ISS:UniProtKB.
DR GO; GO:0005886; C:plasma membrane; ISS:UniProtKB.
DR GO; GO:0008076; C:voltage-gated potassium channel complex; IEA:InterPro.
DR GO; GO:0005249; F:voltage-gated potassium channel activity; IEA:InterPro.
DR GO; GO:0006813; P:potassium ion transport; ISS:UniProtKB.
DR GO; GO:0051260; P:protein homooligomerization; IEA:InterPro.
DR GO; GO:1902259; P:regulation of delayed rectifier potassium channel activity; ISS:UniProtKB.
DR Gene3D; 1.20.120.350; -; 1.
DR Gene3D; 3.30.710.10; -; 1.
DR InterPro; IPR000210; BTB/POZ_dom.
DR InterPro; IPR005821; Ion_trans_dom.
DR InterPro; IPR003968; K_chnl_volt-dep_Kv.
DR InterPro; IPR003971; K_chnl_volt-dep_Kv9.
DR InterPro; IPR011333; SKP1/BTB/POZ_sf.
DR InterPro; IPR003131; T1-type_BTB.
DR InterPro; IPR028325; VG_K_chnl.
DR InterPro; IPR027359; Volt_channel_dom_sf.
DR PANTHER; PTHR11537; PTHR11537; 1.
DR Pfam; PF02214; BTB_2; 1.
DR Pfam; PF00520; Ion_trans; 1.
DR PRINTS; PR01494; KV9CHANNEL.
DR PRINTS; PR01491; KVCHANNEL.
DR SMART; SM00225; BTB; 1.
DR SUPFAM; SSF54695; SSF54695; 1.
PE 3: Inferred from homology;
KW Cell membrane; Ion channel; Ion transport; Membrane; Potassium;
KW Potassium channel; Potassium transport; Transmembrane; Transmembrane helix;
KW Transport; Voltage-gated channel.
FT CHAIN 1..529
FT /note="Potassium voltage-gated channel subfamily S member
FT 1"
FT /id="PRO_0000289614"
FT TOPO_DOM 1..217
FT /note="Cytoplasmic"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT TRANSMEM 218..239
FT /note="Helical; Name=Segment S1"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT TOPO_DOM 240..270
FT /note="Extracellular"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT TRANSMEM 271..293
FT /note="Helical; Name=Segment S2"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT TOPO_DOM 294..304
FT /note="Cytoplasmic"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT TRANSMEM 305..322
FT /note="Helical; Name=Segment S3"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT TOPO_DOM 323..340
FT /note="Extracellular"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT TRANSMEM 341..361
FT /note="Helical; Voltage-sensor; Name=Segment S4"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT TOPO_DOM 362..376
FT /note="Cytoplasmic"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT TRANSMEM 377..398
FT /note="Helical; Name=Segment S5"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT TOPO_DOM 399..411
FT /note="Extracellular"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT INTRAMEM 412..423
FT /note="Helical; Name=Pore helix"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT INTRAMEM 424..431
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT TOPO_DOM 432..438
FT /note="Extracellular"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT TRANSMEM 439..467
FT /note="Helical; Name=Segment S6"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT TOPO_DOM 468..529
FT /note="Cytoplasmic"
FT /evidence="ECO:0000250|UniProtKB:P63142"
FT REGION 494..529
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT MOTIF 424..429
FT /note="Selectivity filter"
FT /evidence="ECO:0000250|UniProtKB:P63142"
SQ SEQUENCE 529 AA; 58320 MW; 763DEF7F5FE4F953 CRC64;
MLMLLVRGTH YESLRSKVVL PTPLGGRGTE ALVSECPSPD TGIRWRQSDE ALRVNVGGVR
RLLSARALAR FPGTRLGRLQ AAASEEQARR LCDDYDAAAR EFYFDRHPGF FLGLLHFYRT
GHLHVLDELC VFAFGQEADY WGLGENALAA CCRARYLERR LSQPRAWDED SDTPSSVDPC
PDEISDVQRE LARYGAARCG RLRRRLWLTM ENPGYSLPSK LFSCVSISVV LASIAAMCIH
SLPEYQAREA AAAVAAVAAG RSPEGVRDDP VLRRLEYFCI AWFSFEVSSR LLLAPSTRNF
FCHPLNLIDI VSVLPFYLTL LAGVALGDQG GTGGKELGHL GKVVQVFRLM RIFRVLKLAR
HSTGLRSLGA TLKHSYREVG ILLLYLAVGV SVFSGVAYTA EKEEDVGFNT IPACWWWGTV
SMTTVGYGDV VPVTVAGKLA ASGCILGGIL VVALPITIIF NKFSHFYRRQ KALEAAVRNS
NHQEFEDLLS SVDGVSEASL ETSRETSQEG RSADLETQAP SEPPHPQMY
