CPLM 1.0 - Compendium of Protein Lysine Modification
TagContent
CPLM ID CPLM-001428
UniProt Accession
Genbank Protein ID
Genbank Nucleotide ID
Protein Name
 Potassium voltage-gated channel subfamily KQT member 3 
Protein Synonyms/Alias
 KQT-like 3; Potassium channel subunit alpha KvLQT3; Voltage-gated potassium channel subunit Kv7.3 
Gene Name
 Kcnq3 
Gene Synonyms/Alias
  
Created Date
 July 27, 2013 
Organism
 Rattus norvegicus (Rat) 
NCBI Taxa ID
 10116 
Lysine Modification
Position
Peptide
Type
References
424LEAAASQKLGLLDRVubiquitination[1]
Reference
 [1] Synaptic protein ubiquitination in rat brain revealed by antibody-based ubiquitome analysis.
 Na CH, Jones DR, Yang Y, Wang X, Xu Y, Peng J.
 J Proteome Res. 2012 Sep 7;11(9):4722-32. [PMID: 22871113
Functional Description
 Probably important in the regulation of neuronal excitability. Associates with KCNQ2 to form a potassium channel with essentially identical properties to the channel underlying the native M-current, a slowly activating and deactivating potassium conductance which plays a critical role in determining the subthreshold electrical excitability of neurons as well as the responsiveness to synaptic inputs. 
Sequence Annotation
 MOTIF 317 322 Selectivity filter (By similarity).
 MOD_RES 34 34 Phosphoserine (By similarity).
 MOD_RES 599 599 Phosphoserine (By similarity).  
Keyword
 Alternative splicing; Complete proteome; Ion channel; Ion transport; Membrane; Phosphoprotein; Potassium; Potassium channel; Potassium transport; Reference proteome; Transmembrane; Transmembrane helix; Transport; Voltage-gated channel. 
Sequence Source
 UniProt (SWISSPROT/TrEMBL); GenBank; EMBL 
Protein Length
 873 AA 
Protein Sequence
MGLKARRAAG AAGGGGGEGG GGGGGAANPA GGDSAVAGDE ERKVGLAPGD VEQVTLALGT 60
GADKDGTLLL EGGGREEGQR RTPQGIGLLA KTPLSRPVKR NNAKYRRIQT LIYDALERPR 120
GWALLYHALV FLIVLGCLIL AVLTTFKEYE TVSGDWLLLL ETFAIFIFGA EFALRIWAAG 180
CCCRYKGWRG RLKFARKPLC MLDIFVLIAS VPVVAVGNQG NVLATSLRSL RFLQILRMLR 240
MDRRGGTWKL LGSAICAHSK ELITAWYIGF LTLILSSFLV YLVEKDVPEM DAQGEEMKEE 300
FETYADALWW GLITLATIGY GDKTPKTWEG RLIAATFSLI GVSFFALPAG ILGSGLALKV 360
QEQHRQKHFE KRRKPAAELI QAAWRYYATN PNRLDLVATW RFYESVVSFP FFRKEQLEAA 420
ASQKLGLLDR VRLSNPRGSN TKGKLFTPLN VDAIEESPSK EPKPVGLNNK ERFRTAFRMK 480
AYAFWQSSED AGTGDPMTED RGYGNDFLIE DMIPTLKAAI RAVRILQFRL YKKKFKETLR 540
PYDVKDVIEQ YSAGHLDMLS RIKYLQTRID MIFTPGPPST PKHKKSQKGS AFTYPSQQSP 600
RNEPYVARAA TSETEDQSMM GKFVKVERQV HDMGKKLDFL VDMHMQHMER LQVHVTEYYP 660
TKGASSPAEG EKKEDNRYSD LKTIICNYSE SGPPDPPYSF HQVPIDRVGP YGFFAHDPVK 720
LTRGGPSSTK AQANLPSSGS TYAERPTVLP ILTLLDSCVS YHSQTELQGP YSDHISPRQR 780
RSITRDSDTP LSLMSVNHEE LERSPSGFSI SQDRDDYVFG PSGGSSWMRE KRYLAEGETD 840
TDTDPFTPSG SMPMSSTGDG ISDSIWTPSN KPT 873 
Gene Ontology
 GO:0043194; C:axon initial segment; IEA:Compara.
 GO:0033268; C:node of Ranvier; IEA:Compara.
 GO:0008076; C:voltage-gated potassium channel complex; IEA:InterPro.
 GO:0005251; F:delayed rectifier potassium channel activity; IBA:RefGenome.
 GO:0060081; P:membrane hyperpolarization; IEA:Compara. 
Interpro
 IPR020969; Ankyrin-G_BS.
 IPR005821; Ion_trans_dom.
 IPR003091; K_chnl.
 IPR003937; K_chnl_volt-dep_KCNQ.
 IPR003948; K_chnl_volt-dep_KCNQ3.
 IPR013821; K_chnl_volt-dep_KCNQ_C. 
Pfam
 PF00520; Ion_trans
 PF03520; KCNQ_channel
 PF11956; KCNQC3-Ank-G_bd 
SMART
  
PROSITE
  
PRINTS
 PR00169; KCHANNEL.
 PR01462; KCNQ3CHANNEL.
 PR01459; KCNQCHANNEL.