Target Information

General Information of This Target
Target ID
BTDT00158
Target Name
Inward rectifier potassium channel 2 (Kcnj2)
Target Bioclass
Transporter and channel
Uniprot ID
Q64273
3D Structure
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2D Sequence
3D Structure
Source
Predict by Alphafold2
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Alphafold Parameters: msa_mode: mmseqs2_uniref_env model_type: auto num_recycles: auto
Gene Name
Kcnj2
Gene ID
29712
Synonym
Irk1; Inward rectifier K(+) channel Kir2.1; Potassium channel, inwardly rectifying subfamily J member 2
Sequence
MGSVRTNRYSIVSSEEDGMKLATMAVANGFGNGKSKVHTRQQCRSRFVKKDGHCNVQFIN
VGEKGQRYLADIFTTCVDIRWRWMLVIFCLAFVLSWLFFGCVFWLIALLHGDLDASKESK
ACVSEVNSFTAAFLFSIETQTTIGYGFRCVTDECPIAVFMVVFQSIVGCIIDAFIIGAVM
AKMAKPKKRNETLVFSHNAVIAMRDGKLCLMWRVGNLRKSHLVEAHVRAQLLKSRITSEG
EYIPLDQIDINVGFDSGIDRIFLVSPITIVHEIDEDSPLYDLSKQDIDNADFEIVVILEG
MVEATAMTTQCRSSYLANEILWGHRYEPVLFEEKHCYKVDYSRFHKTYEVPNTPLCSARD
LAEKKYILSNANSFCYENEVALTSKEEEDSENGVPESTSTDSPPGIDLHNQASVPLEPRP
LRRESEI

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Family
the inward rectifier-type potassium channel family
Function
Probably participates in establishing action potential waveform and excitability of neuronal and muscle tissues. Inward rectifier potassium channels are characterized by a greater tendency to allow potassium to flow into the cell rather than out of it. Their voltage dependence is regulated by the concentration of extracellular potassium; as external potassium is raised, the voltage range of the channel opening shifts to more positive voltages. The inward rectification is mainly due to the blockage of outward current by internal magnesium. Can be blocked by extracellular barium and cesium.

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Taxonomy ID
10116
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Kingdom: Metazoa
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Muridae
Genus: Rattus
Species: Rattus norvegicus
Toxin Information Related to This Target
                           Toxin Name Activity Data Type Activity Data Reference
 Toxin Info    Potassium channel toxin ShK ([pTyr][AEEA]) Inhibition rate . [1]
References
Ref 1 Targeting effector memory T cells with a selective peptide inhibitor of Kv1.3 channels for therapy of autoimmune diseases. Mol Pharmacol. 2005 Apr;67(4):1369-81. doi: 10.1124/mol.104.008193. Epub 2005 Jan 21.
Ref 2 Design and characterization of a highly selective peptide inhibitor of the small conductance calcium-activated K+ channel, SkCa2. J Biol Chem. 2001 Nov 16;276(46):43145-51. doi: 10.1074/jbc.M106981200. Epub 2001 Aug 29.
Ref 3 Antidepressive effect of an inward rectifier K+ channel blocker peptide, tertiapin-RQ. PLoS One. 2020 Nov 13;15(11):e0233815. doi: 10.1371/journal.pone.0233815. eCollection 2020.
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