General Information of This Target
Target ID
BTDT10204
Target Name
Potassium voltage-gated channel subfamily C member 4
Target Bioclass
Transporter and channel
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N.A.
Toxin Information Related to This Target
                           Toxin Name Activity Data Type Activity Data Reference
 Toxin Info    Kappa-theraphotoxin-Ps1a Inhibition rate . [1], [2], [3]
 Toxin Info    Kappa-theraphotoxin-Ps1b Inhibition rate . [1]
 Toxin Info    Kappa-actitoxin-Ael2a Inhibition rate . [4- 10]
 Toxin Info    Alpha/kappa-conotoxin pl14a Inhibition rate . [11]
 Toxin Info    APETx2 Inhibition rate
17 %
[7- 20]
 Toxin Info    APETx2 Inhibition rate
38 %
[7- 20]
 Toxin Info    DeltaKappa-actitoxin-Avd4b Inhibition rate
50 %
[8- 22]
 Toxin Info    Delta/kappa-actitoxin-Avd4a Inhibition rate
56 %
[8- 25]
 Toxin Info    Delta/kappa-actitoxin-Avd4a Inhibition rate
94 %
[8- 25]
 Toxin Info    Delta/kappa-actitoxin-Avd4a IC50
47 nM
[8- 25]
 Toxin Info    DeltaKappa-actitoxin-Avd4b IC50
56 nM
[8- 22]
 Toxin Info    DeltaKappa-actitoxin-Avd4b IC50
750 nM
[8- 22]
References
Ref 1 Effects of phrixotoxins on the Kv4 family of potassium channels and implications for the role of Ito1 in cardiac electrogenesis. Br J Pharmacol. 1999 Jan;126(1):251-63. doi: 10.1038/sj.bjp.0702283.
Ref 2 Studies examining the relationship between the chemical structure of protoxin II and its activity on voltage gated sodium channels. J Med Chem. 2014 Aug 14;57(15):6623-31. doi: 10.1021/jm500687u. Epub 2014 Jul 24.
Ref 3 Solution structure of Phrixotoxin 1, a specific peptide inhibitor of Kv4 potassium channels from the venom of the theraphosid spider Phrixotrichus auratus. Protein Sci. 2004 May;13(5):1197-208. doi: 10.1110/ps.03584304.
Ref 4 APETx1, a new toxin from the sea anemone Anthopleura elegantissima, blocks voltage-gated human ether-a-go-go-related gene potassium channels. Mol Pharmacol. 2003 Jul;64(1):59-69. doi: 10.1124/mol.64.1.59.
Ref 5 Species diversity and peptide toxins blocking selectivity of ether-a-go-go-related gene subfamily K+ channels in the central nervous system. Mol Pharmacol. 2006 May;69(5):1673-83. doi: 10.1124/mol.105.019729. Epub 2006 Feb 23.
Ref 6 APETx1 from sea anemone Anthopleura elegantissima is a gating modifier peptide toxin of the human ether-a-go-go- related potassium channel. Mol Pharmacol. 2007 Aug;72(2):259-68. doi: 10.1124/mol.107.035840. Epub 2007 May 1.
Ref 7 A natural point mutation changes both target selectivity and mechanism of action of sea anemone toxins. FASEB J. 2012 Dec;26(12):5141-51. doi: 10.1096/fj.12-218479. Epub 2012 Sep 12.
Ref 8 Development of a rational nomenclature for naming peptide and protein toxins from sea anemones. Toxicon. 2012 Sep 15;60(4):539-50. doi: 10.1016/j.toxicon.2012.05.020. Epub 2012 Jun 5.
Ref 9 Defensin-neurotoxin dyad in a basally branching metazoan sea anemone. FEBS J. 2017 Oct;284(19):3320-3338. doi: 10.1111/febs.14194. Epub 2017 Sep 6.
Ref 10 Solution structure of APETx1 from the sea anemone Anthopleura elegantissima: a new fold for an HERG toxin. Proteins. 2005 May 1;59(2):380-6. doi: 10.1002/prot.20425.
Ref 11 A novel conotoxin inhibitor of Kv1.6 channel and nAChR subtypes defines a new superfamily of conotoxins. Biochemistry. 2006 Jul 11;45(27):8331-40. doi: 10.1021/bi060263r.
Ref 12 A new sea anemone peptide, APETx2, inhibits ASIC3, a major acid-sensitive channel in sensory neurons. EMBO J. 2004 Apr 7;23(7):1516-25. doi: 10.1038/sj.emboj.7600177. Epub 2004 Mar 25.
Ref 13 ASIC3, a sensor of acidic and primary inflammatory pain. EMBO J. 2008 Nov 19;27(22):3047-55. doi: 10.1038/emboj.2008.213. Epub 2008 Oct 16.
Ref 14 Chemical synthesis and folding of APETx2, a potent and selective inhibitor of acid sensing ion channel 3. Toxicon. 2009 Jul;54(1):56-61. doi: 10.1016/j.toxicon.2009.03.014. Epub 2009 Mar 21.
Ref 15 Expression in Pichia pastoris and characterization of APETx2, a specific inhibitor of acid sensing ion channel 3. Toxicon. 2010 Dec;56(8):1388-97. doi: 10.1016/j.toxicon.2010.08.004. Epub 2010 Sep 9.
Ref 16 Inhibition of voltage-gated Na(+) currents in sensory neurones by the sea anemone toxin APETx2. Br J Pharmacol. 2012 Apr;165(7):2167-77. doi: 10.1111/j.1476-5381.2011.01674.x.
Ref 17 Cyclisation increases the stability of the sea anemone peptide APETx2 but decreases its activity at acid-sensing ion channel 3. Mar Drugs. 2012 Jul;10(7):1511-1527. doi: 10.3390/md10071511. Epub 2012 Jul 16.
Ref 18 Functional expression in Escherichia coli of the disulfide-rich sea anemone peptide APETx2, a potent blocker of acid-sensing ion channel 3. Mar Drugs. 2012 Jul;10(7):1605-1618. doi: 10.3390/md10071605. Epub 2012 Jul 23.
Ref 19 Solution structure of APETx2, a specific peptide inhibitor of ASIC3 proton-gated channels. Protein Sci. 2005 Aug;14(8):2003-10. doi: 10.1110/ps.051378905. Epub 2005 Jun 29.
Ref 20 Understanding the molecular basis of toxin promiscuity: the analgesic sea anemone peptide APETx2 interacts with acid-sensing ion channel 3 and hERG channels via overlapping pharmacophores. J Med Chem. 2014 Nov 13;57(21):9195-203. doi: 10.1021/jm501400p. Epub 2014 Nov 4.
Ref 21 Sea anemone peptides with a specific blocking activity against the fast inactivating potassium channel Kv3.4. J Biol Chem. 1998 Mar 20;273(12):6744-9. doi: 10.1074/jbc.273.12.6744.
Ref 22 Modulation of Kv3 subfamily potassium currents by the sea anemone toxin BDS: significance for CNS and biophysical studies. J Neurosci. 2005 Sep 21;25(38):8735-45. doi: 10.1523/JNEUROSCI.2119-05.2005.
Ref 23 Modulation of neuronal sodium channels by the sea anemone peptide BDS-I. J Neurophysiol. 2012 Jun;107(11):3155-67. doi: 10.1152/jn.00785.2011. Epub 2012 Mar 21.
Ref 24 A proton nuclear magnetic resonance study of the antihypertensive and antiviral protein BDS-I from the sea anemone Anemonia sulcata: sequential and stereospecific resonance assignment and secondary structure. Biochemistry. 1989 Mar 7;28(5):2178-87. doi: 10.1021/bi00431a032.
Ref 25 Determination of the three-dimensional solution structure of the antihypertensive and antiviral protein BDS-I from the sea anemone Anemonia sulcata: a study using nuclear magnetic resonance and hybrid distance geometry-dynamical simulated annealing. Biochemistry. 1989 Mar 7;28(5):2188-98. doi: 10.1021/bi00431a033.
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