| Transporter Information: | |
| Name: | sodium channel, voltage-gated, type IX, alpha |
|---|---|
| Symbol: | SCN9A |
| TC: | 1.A.1.10.1 |
| Locations: | 2q24 |
| Aliases: | NE-NA, PN1 |
| GenBank: | X82835 |
| Swiss-Prot: | Q15858 |
| Accession Number: | NM_002977 |
| Old Name: | sodium channel, voltage-gated, type IX, alpha polypeptide |
| GDB | GDB:3750013 |
| LocusLink | 6335 |
| OMIM | 603415 |
| PubMed (7720699): | Klugbauer N, Lacinova L, Flockerzi V, Hofmann F. Structure and functional expression of a new member of thetetrodotoxin-sensitive voltage-activated sodium channel family from humanneuroendocrine cells.EMBO J. 1995 Mar 15;14(6):1084-90. PMID: 7720699 [PubMed - indexed for MEDLINE] A member of a new subclass of the voltage-activated sodium channel genes has been cloned from the human medullary thyroid carcinoma (hMTC) cell line. The cDNA of hNE-Na (human neuroendocrine sodium channel) encodes a 1977 amino acid protein which phylogenetically represents a link between sodium channels isolated from skeletal muscle and brain. The hNE-Na alpha subunit was transiently expressed in human embryonic kidney cells either alone or in combination with the human sodium channel beta 1 subunit. The channel exhibited rapid activation and inactivation kinetics, and was blocked by tetrodotoxin and cadmium with IC50 values of 24.5 nM and 1.1 mM, respectively. Action potentials were generated in cells expressing high levels of hNE-Na. Northern blot and reverse transcription-polymerase chain reaction (RT-PCR) analyses demonstrated its expression in hMTC cells, in a C-cell carcinoma, and in thyroid and adrenal gland. Transcripts were not identified in pituitary gland, brain, heart, liver or kidney, indicating that the hNE-Na is a sodium channel solely expressed in neuroendocrine cells. |
>sp|Q15858|SCN9A_HUMAN Sodium channel protein type 9 subunit alpha OS=Homo sapiens GN=SCN9A PE=1 SV=2
MAMLPPPGPQSFVHFTKQSLALIEQRIAERKSKEPKEEKKDDDEEAPKPSSDLEAGKQLPFIYGDIPPGMVSEPLEDLDP
YYADKKTFIVLNKGKTIFRFNATPALYMLSPFSPLRRISIKILVHSLFSMLIMCTILTNCIFMTMNNPPDWTKNVEYTFT
GIYTFESLVKILARGFCVGEFTFLRDPWNWLDFVVIVFAYLTEFVNLGNVSALRTFRVLRALKTISVIPGLKTIVGALIQ
SVKKLSDVMILTVFCLSVFALIGLQLFMGNLKHKCFRNSLENNETLESIMNTLESEEDFRKYFYYLEGSKDALLCGFSTD
SGQCPEGYTCVKIGRNPDYGYTSFDTFSWAFLALFRLMTQDYWENLYQQTLRAAGKTYMIFFVVVIFLGSFYLINLILAV
VAMAYEEQNQANIEEAKQKELEFQQMLDRLKKEQEEAEAIAAAAAEYTSIRRSRIMGLSESSSETSKLSSKSAKERRNRR
KKKNQKKLSSGEEKGDAEKLSKSESEDSIRRKSFHLGVEGHRRAHEKRLSTPNQSPLSIRGSLFSARRSSRTSLFSFKGR
GRDIGSETEFADDEHSIFGDNESRRGSLFVPHRPQERRSSNISQASRSPPMLPVNGKMHSAVDCNGVVSLVDGRSALMLP
NGQLLPEVIIDKATSDDSGTTNQIHKKRRCSSYLLSEDMLNDPNLRQRAMSRASILTNTVEELEESRQKCPPWWYRFAHK
FLIWNCSPYWIKFKKCIYFIVMDPFVDLAITICIVLNTLFMAMEHHPMTEEFKNVLAIGNLVFTGIFAAEMVLKLIAMDP
YEYFQVGWNIFDSLIVTLSLVELFLADVEGLSVLRSFRLLRVFKLAKSWPTLNMLIKIIGNSVGALGNLTLVLAIIVFIF
AVVGMQLFGKSYKECVCKINDDCTLPRWHMNDFFHSFLIVFRVLCGEWIETMWDCMEVAGQAMCLIVYMMVMVIGNLVVL
NLFLALLLSSFSSDNLTAIEEDPDANNLQIAVTRIKKGINYVKQTLREFILKAFSKKPKISREIRQAEDLNTKKENYISN
HTLAEMSKGHNFLKEKDKISGFGSSVDKHLMEDSDGQSFIHNPSLTVTVPIAPGESDLENMNAEELSSDSDSEYSKVRLN
RSSSSECSTVDNPLPGEGEEAEAEPMNSDEPEACFTDGCVRRFSCCQVNIESGKGKIWWNIRKTCYKIVEHSWFESFIVL
MILLSSGALAFEDIYIERKKTIKIILEYADKIFTYIFILEMLLKWIAYGYKTYFTNAWCWLDFLIVDVSLVTLVANTLGY
SDLGPIKSLRTLRALRPLRALSRFEGMRVVVNALIGAIPSIMNVLLVCLIFWLIFSIMGVNLFAGKFYECINTTDGSRFP
ASQVPNRSECFALMNVSQNVRWKNLKVNFDNVGLGYLSLLQVATFKGWTIIMYAAVDSVNVDKQPKYEYSLYMYIYFVVF
IIFGSFFTLNLFIGVIIDNFNQQKKKLGGQDIFMTEEQKKYYNAMKKLGSKKPQKPIPRPGNKIQGCIFDLVTNQAFDIS
IMVLICLNMVTMMVEKEGQSQHMTEVLYWINVVFIILFTGECVLKLISLRHYYFTVGWNIFDFVVVIISIVGMFLADLIE
TYFVSPTLFRVIRLARIGRILRLVKGAKGIRTLLFALMMSLPALFNIGLLLFLVMFIYAIFGMSNFAYVKKEDGINDMFN
FETFGNSMICLFQITTSAGWDGLLAPILNSKPPDCDPKKVHPGSSVEGDCGNPSVGIFYFVSYIIISFLVVVNMYIAVIL
ENFSVATEESTEPLSEDDFEMFYEVWEKFDPDATQFIEFSKLSDFAAALDPPLLIAKPNKVQLIAMDLPMVSGDRIHCLD
ILFAFTKRVLGESGEMDSLRSQMEERFMSANPSKVSYEPITTTLKRKQEDVSATVIQRAYRRYRLRQNVKNISSIYIKDG
DRDDDLLNKKDMAFDNVNENSSPEKTDATSSTTSPPSYDSVTKPDKEKYEQDRTEKEDKGKDSKESKK
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