Potassium voltage-gated channel subfamily KQT member 2

NamePotassium voltage-gated channel subfamily KQT member 2
Synonyms
  • KQT-like 2
  • Neuroblastoma-specific potassium channel subunit alpha KvLQT2
  • Voltage-gated potassium channel subunit Kv7.2
Gene NameKCNQ2
OrganismHuman
Amino acid sequence
>lcl|BSEQ0001787|Potassium voltage-gated channel subfamily KQT member 2
MVQKSRNGGVYPGPSGEKKLKVGFVGLDPGAPDSTRDGALLIAGSEAPKRGSILSKPRAG
GAGAGKPPKRNAFYRKLQNFLYNVLERPRGWAFIYHAYVFLLVFSCLVLSVFSTIKEYEK
SSEGALYILEIVTIVVFGVEYFVRIWAAGCCCRYRGWRGRLKFARKPFCVIDIMVLIASI
AVLAAGSQGNVFATSALRSLRFLQILRMIRMDRRGGTWKLLGSVVYAHSKELVTAWYIGF
LCLILASFLVYLAEKGENDHFDTYADALWWGLITLTTIGYGDKYPQTWNGRLLAATFTLI
GVSFFALPAGILGSGFALKVQEQHRQKHFEKRRNPAAGLIQSAWRFYATNLSRTDLHSTW
QYYERTVTVPMYSSQTQTYGASRLIPPLNQLELLRNLKSKSGLAFRKDPPPEPSPSKGSP
CRGPLCGCCPGRSSQKVSLKDRVFSSPRGVAAKGKGSPQAQTVRRSPSADQSLEDSPSKV
PKSWSFGDRSRARQAFRIKGAASRQNSEEASLPGEDIVDDKSCPCEFVTEDLTPGLKVSI
RAVCVMRFLVSKRKFKESLRPYDVMDVIEQYSAGHLDMLSRIKSLQSRVDQIVGRGPAIT
DKDRTKGPAEAELPEDPSMMGRLGKVEKQVLSMEKKLDFLVNIYMQRMGIPPTETEAYFG
AKEPEPAPPYHSPEDSREHVDRHGCIVKIVRSSSSTGQKNFSAPPAAPPVQCPPSTSWQP
QSHPRQGHGTSPVGDHGSLVRIPPPPAHERSLSAYGGGNRASMEFLRQEDTPGCRPPEGN
LRDSDTSISIPSVDHEELERSFSGFSISQSKENLDALNSCYAAVAPCAKVRPYIAEGESD
TDSDLCTPCGPPPRSATGEGPFGDVGWAGPRK
Number of residues872
Molecular Weight95846.575
Theoretical pI9.59
GO Classification
Functions
  • voltage-gated potassium channel activity
  • potassium channel activity
  • ankyrin binding
  • delayed rectifier potassium channel activity
Processes
  • potassium ion transport
  • transmission of nerve impulse
  • synaptic transmission
  • axon guidance
  • nervous system development
  • potassium ion transmembrane transport
Components
  • plasma membrane
  • voltage-gated potassium channel complex
  • integral component of membrane
  • axon initial segment
  • node of Ranvier
General FunctionVoltage-gated potassium channel activity
Specific FunctionProbably important in the regulation of neuronal excitability. Associates with KCNQ3 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. KCNQ2/KCNQ3 current is blocked by linopirdine and XE991, and activated by the anticonvulsant retigabine. Muscarinic agonist oxotremorine-M strongly suppress KCNQ2/KCNQ3 current in cells in which cloned KCNQ2/KCNQ3 channels were coexpressed with M1 muscarinic receptors.
Pfam Domain Function
Transmembrane Regions92-112 123-143 167-187 196-218 232-252 292-312
GenBank Protein ID1841342
UniProtKB IDO43526
UniProtKB Entry NameKCNQ2_HUMAN
Cellular LocationMembrane
Gene sequence
>lcl|BSEQ0010632|Potassium voltage-gated channel subfamily KQT member 2 (KCNQ2)
ATGGTGCAGAAGTCGCGCAACGGCGGCGTATACCCCGGCCCGAGCGGGGAGAAGAAGCTG
AAGGTGGGCTTCGTGGGGCTGGACCCCGGCGCGCCCGACTCCACCCGGGACGGGGCGCTG
CTGATCGCCGGCTCCGAGGCCCCCAAGCGCGGCAGCATCCTCAGCAAACCTCGCGCGGGC
GGCGCGGGCGCCGGGAAGCCCCCCAAGCGCAACGCCTTCTACCGCAAGCTGCAGAATTTC
CTCTACAACGTGCTGGAGCGGCCGCGCGGCTGGGCGTTCATCTACCACGCCTACGTGTTC
CTCCTGGTTTTCTCCTGCCTCGTGCTGTCTGTGTTTTCCACCATCAAGGAGTATGAGAAG
AGCTCGGAGGGGGCCCTCTACATCCTGGAAATCGTGACTATCGTGGTGTTTGGCGTGGAG
TACTTCGTGCGGATCTGGGCCGCAGGCTGCTGCTGCCGGTACCGTGGCTGGAGGGGGCGG
CTCAAGTTTGCCCGGAAACCGTTCTGTGTGATTGACATCATGGTGCTCATCGCCTCCATT
GCGGTGCTGGCCGCCGGCTCCCAGGGCAACGTCTTTGCCACATCTGCGCTCCGGAGCCTG
CGCTTCCTGCAGATTCTGCGGATGATCCGCATGGACCGGCGGGGAGGCACCTGGAAGCTG
CTGGGCTCTGTGGTCTATGCCCACAGCAAGGAGCTGGTCACTGCCTGGTACATCGGCTTC
CTTTGTCTCATCCTGGCCTCGTTCCTGGTGTACTTGGCAGAGAAGGGGGAGAACGACCAC
TTTGACACCTACGCGGATGCACTCTGGTGGGGCCTGATCACGCTGACCACCATTGGCTAC
GGGGACAAGTACCCCCAGACCTGGAACGGCAGGCTCCTTGCGGCAACCTTCACCCTCATC
GGTGTCTCCTTCTTCGCGCTGCCTGCAGGCATCTTGGGGTCTGGGTTTGCCCTGAAGGTT
CAGGAGCAGCACAGGCAGAAGCACTTTGAGAAGAGGCGGAACCCGGCAGCAGGCCTGATC
CAGTCGGCCTGGAGATTCTACGCCACCAACCTCTCGCGCACAGACCTGCACTCCACGTGG
CAGTACTACGAGCGAACGGTCACCGTGCCCATGTACAGACTTATCCCCCCGCTGAACCAG
CTGGAGCTGCTGAGGAACCTCAAGAGTAAATCTGGACTCGCTTTCAGGAAGGACCCCCCG
CCGGAGCCGTCTCCAAGCCAGAAGGTCAGTTTGAAAGATCGTGTCTTCTCCAGCCCCCGA
GGCGTGGCTGCCAAGGGGAAGGGGTCCCCGCAGGCCCAGACTGTGAGGCGGTCACCCAGC
GCCGACCAGAGCCTCGAGGACAGCCCCAGCAAGGTGCCCAAGAGCTGGAGCTTCGGGGAC
CGCAGCCGGGCACGCCAGGCTTTCCGCATCAAGGGTGCCGCGTCACGGCAGAACTCAGAA
GAAGCAAGCCTCCCCGGAGAGGACATTGTGGATGACAAGAGCTGCCCCTGCGAGTTTGTG
ACCGAGGACCTGACCCCGGGCCTCAAAGTCAGCATCAGAGCCGTGTGTGTCATGCGGTTC
CTGGTGTCCAAGCGGAAGTTCAAGGAGAGCCTGCGGCCCTACGACGTGATGGACGTCATC
GAGCAGTACTCAGCCGGCCACCTGGACATGCTGTCCCGAATTAAGAGCCTGCAGTCCAGA
GTGGACCAGATCGTGGGGCGGGGCCCAGCGATCACGGACAAGGACCGCACCAAGGGCCCG
GCCGAGGCGGAGCTGCCCGAGGACCCCAGCATGATGGGACGGCTCGGGAAGGTGGAGAAG
CAGGTCTTGTCCATGGAGAAGAAGCTGGACTTCCTGGTGAATATCTACATGCAGCGGATG
GGCATCCCCCCGACAGAGACCGAGGCCTACTTTGGGGCCAAAGAGCCGGAGCCGGCGCCG
CCGTACCACAGCCCGGAAGACAGCCGGGAGCATGTCGACAGGCACGGCTGCATTGTCAAG
ATCGTGCGCTCCAGCAGCTCCACGGGCCAGAAGAACTTCTCGGCGCCCCCGGCCGCGCCC
CCTGTCCAGTGTCCGCCCTCCACCTCCTGGCAGCCACAGAGCCACCCGCGCCAGGGCCAC
GGCACCTCCCCCGTGGGGGACCACGGCTCCCTGGTGCGCATCCCGCCGCCGCCTGCCCAC
GAGCGGTCGCTGTCCGCCTACGGCGGGGGCAACCGCGCCAGCATGGAGTTCCTGCGGCAG
GAGGACACCCCGGGCTGCAGGCCCCCCGAGGGGAACCTGCGGGACAGCGACACGTCCATC
TCCATCCCGTCCGTGGACCACGAGGAGCTGGAGCGTTCCTTCAGCGGCTTCAGCATCTCC
CAGTCCAAGGAGAACCTGGATGCTCTCAACAGCTGCTACGCGGCCGTGGCGCCTTGTGCC
AAAGTCAGGCCCTACATTGCGGAGGGAGAGTCAGACACCGACTCCGACCTCTGTACCCCG
TGCGGGCCCCCGCCACGCTCGGCCACCGGCGAGGGTCCCTTTGGTGACGTGGGCTGGGCC
GGGCCCAGGAAGTGA
GenBank Gene IDD82346
GeneCard IDNot Available
GenAtlas IDKCNQ2
HGNC IDHGNC:6296
Chromosome Location20
Locus20q13.3
References
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