Details of the Drug Transporter (DTP)

General Information of Drug Transporter (DTP) (ID: DTIMSBJ)

• DTP Name: Voltage-gated sodium channel alpha Nav1.6 (SCN8A)
• Gene Name: SCN8A
• UniProt ID: O95788 (SCN8A_HUMAN)
• VARIDT ID: DTD0528
• Synonyms: BFIS5; CERIII; CIAT; EIEE13; MED; MYOCL2; NaCh6; Nav1.6; PN4; SCN8A; Sodium channel protein type VIII subunit alpha; Sodium channel protein type 8 subunit alpha; Voltage-gated sodium channel subunit alpha Nav1.6
• DTP Family: Voltage-Gated Ion Channel (VIC) Superfamily
• Tissue Specificity: Isoform 5 is expressed in non-neuronaltissues, such as monocytes/macrophages.
• Sequence:
  MAARLLAPPGPDSFKPFTPESLANIERRIAESKLKKPPKADGSHREDDEDSKPKPNSDLE
  AGKSLPFIYGDIPQGLVAVPLEDFDPYYLTQKTFVVLNRGKTLFRFSATPALYILSPFNL
  IRRIAIKILIHSVFSMIIMCTILTNCVFMTFSNPPDWSKNVEYTFTGIYTFESLVKIIAR
  GFCIDGFTFLRDPWNWLDFSVIMMAYITEFVNLGNVSALRTFRVLRALKTISVIPGLKTI
  VGALIQSVKKLSDVMILTVFCLSVFALIGLQLFMGNLRNKCVVWPINFNESYLENGTKGF
  DWEEYINNKTNFYTVPGMLEPLLCGNSSDAGQCPEGYQCMKAGRNPNYGYTSFDTFSWAF
  LALFRLMTQDYWENLYQLTLRAAGKTYMIFFVLVIFVGSFYLVNLILAVVAMAYEEQNQA
  TLEEAEQKEAEFKAMLEQLKKQQEEAQAAAMATSAGTVSEDAIEEEGEEGGGSPRSSSEI
  SKLSSKSAKERRNRRKKRKQKELSEGEEKGDPEKVFKSESEDGMRRKAFRLPDNRIGRKF
  SIMNQSLLSIPGSPFLSRHNSKSSIFSFRGPGRFRDPGSENEFADDEHSTVEESEGRRDS
  LFIPIRARERRSSYSGYSGYSQGSRSSRIFPSLRRSVKRNSTVDCNGVVSLIGGPGSHIG
  GRLLPEATTEVEIKKKGPGSLLVSMDQLASYGRKDRINSIMSVVTNTLVEELEESQRKCP
  PCWYKFANTFLIWECHPYWIKLKEIVNLIVMDPFVDLAITICIVLNTLFMAMEHHPMTPQ
  FEHVLAVGNLVFTGIFTAEMFLKLIAMDPYYYFQEGWNIFDGFIVSLSLMELSLADVEGL
  SVLRSFRLLRVFKLAKSWPTLNMLIKIIGNSVGALGNLTLVLAIIVFIFAVVGMQLFGKS
  YKECVCKINQDCELPRWHMHDFFHSFLIVFRVLCGEWIETMWDCMEVAGQAMCLIVFMMV
  MVIGNLVVLNLFLALLLSSFSADNLAATDDDGEMNNLQISVIRIKKGVAWTKLKVHAFMQ
  AHFKQREADEVKPLDELYEKKANCIANHTGADIHRNGDFQKNGNGTTSGIGSSVEKYIID
  EDHMSFINNPNLTVRVPIAVGESDFENLNTEDVSSESDPEGSKDKLDDTSSSEGSTIDIK
  PEVEEVPVEQPEEYLDPDACFTEGCVQRFKCCQVNIEEGLGKSWWILRKTCFLIVEHNWF
  ETFIIFMILLSSGALAFEDIYIEQRKTIRTILEYADKVFTYIFILEMLLKWTAYGFVKFF
  TNAWCWLDFLIVAVSLVSLIANALGYSELGAIKSLRTLRALRPLRALSRFEGMRVVVNAL
  VGAIPSIMNVLLVCLIFWLIFSIMGVNLFAGKYHYCFNETSEIRFEIEDVNNKTECEKLM
  EGNNTEIRWKNVKINFDNVGAGYLALLQVATFKGWMDIMYAAVDSRKPDEQPKYEDNIYM
  YIYFVIFIIFGSFFTLNLFIGVIIDNFNQQKKKFGGQDIFMTEEQKKYYNAMKKLGSKKP
  QKPIPRPLNKIQGIVFDFVTQQAFDIVIMMLICLNMVTMMVETDTQSKQMENILYWINLV
  FVIFFTCECVLKMFALRHYYFTIGWNIFDFVVVILSIVGMFLADIIEKYFVSPTLFRVIR
  LARIGRILRLIKGAKGIRTLLFALMMSLPALFNIGLLLFLVMFIFSIFGMSNFAYVKHEA
  GIDDMFNFETFGNSMICLFQITTSAGWDGLLLPILNRPPDCSLDKEHPGSGFKGDCGNPS
  VGIFFFVSYIIISFLIVVNMYIAIILENFSVATEESADPLSEDDFETFYEIWEKFDPDAT
  QFIEYCKLADFADALEHPLRVPKPNTIELIAMDLPMVSGDRIHCLDILFAFTKRVLGDSG
  ELDILRQQMEERFVASNPSKVSYEPITTTLRRKQEEVSAVVLQRAYRGHLARRGFICKKT
  TSNKLENGGTHREKKESTPSTASLPSYDSVTKPEKEKQQRAEEGRRERAKRQKEVRESKC
• Function: This transporter mediates the voltage-dependent sodium ion permeability of excitable membranes. Assuming opened or closed conformations in response to the voltage difference across the membrane, the protein forms a sodium-selective channel through which Na(+) ions may pass in accordance with their electrochemical gradient. In macrophages and melanoma cells, isoform 5 may participate in the control of podosome and invadopodia formation.
• Endogenous Substrate(s): Na+
• TCDB ID: 1.A.1.10.8
• Gene ID: 6334

The Drug Therapeutic Target (DTT) Role of This DTP

• DTP DTT Name: Voltage-gated sodium channel alpha Nav1.6 (SCN8A) DTT Info
• DTP DTT Type: Clinical trial

3 Clinical Trial Drug(s) Targeting This DTP

Drug Name	Drug ID	Indication	ICD 11	Highest Status	REF
NBI-921352	DMTTW9V	Epileptic encephalopathy	8A62	Phase 2	[1]
PRAX-330	DMHIS3M	Epilepsy	8A60-8A68	Phase 1	[2]
XEN901	DMRP9YF	Epilepsy	8A60-8A68	Phase 1	[3]

3 Investigative Drug(s) Targeting This DTP

Drug Name	Drug ID	Indication	ICD 11	Highest Status	REF
4,9-anhydro-tetrodotoxin	DMEKI1B	Discovery agent	N.A.	Investigative	[4]
batrachotoxin	DMYH9SU	Discovery agent	N.A.	Investigative	[5]
veratridine	DMUF8JZ	Discovery agent	N.A.	Investigative	[5]

References

• [1] Clinical pipeline report, company report or official report of Neurocrine Biosciences
• [2] Clinical pipeline report, company report or official report of the Pharmaceutical Research and Manufacturers of America (PhRMA)
• [3] Antibodies and venom peptides: new modalities for ion channels. Nat Rev Drug Discov. 2019 May;18(5):339-357.
• [4] The TTX metabolite 4,9-anhydro-TTX is a highly specific blocker of the Na(v1.6) voltage-dependent sodium channel. Am J Physiol Cell Physiol. 2007 Aug;293(2):C783-9.
• [5] URL: http://www.guidetopharmacology.org Nucleic Acids Res. 2015 Oct 12. pii: gkv1037. The IUPHAR/BPS Guide to PHARMACOLOGY in 2016: towards curated quantitative interactions between 1300 protein targets and 6000 ligands. (Target id: 583).