PPore-forming subunit of a voltage-gated sodium channel complex through which Na(+) ions pass in accordance with their electrochemical gradient (PubMed:2559760, PubMed:16303569, PubMed:28012039). Alternates between resting, activated and inactivated states (PubMed:28012039). Required for normal muscle fiber excitability, normal muscle contraction and relaxation cycles, and constant muscle strength in the presence of fluctuating K(+) levels (By similarity).

Belongs to the sodium channel (TC 1.A.1.10) family. Nav1.4/SCN4A subfamily.

1840 amino acids

MASSSLPNLVPPGPHCLRPFTPESLAAIEQRAVEEEARLQRNKQMEIEEPERKPRSDLEAGKNLPLIYGDPPPEVIGIPLEDLDPYYSDKKTFIVLNKGKAIFRFSATPALYLLSPFSIVRRVAIKVLIHALFSMFIMITILTNCVFMTMSNPPSWSKHVEYTFTGIYTFESLIKMLARGFCIDDFTFLRDPWNWLDFSVITMAYVTEFVDLGNISALRTFRVLRALKTITVIPGLKTIVGALIQSVKKLSDVMILTVFCLSVFALVGLQLFMGNLRQKCVRWPPPMNDTNTTWYGNDTWYSNDTWYGNDTWYINDTWNSQESWAGNSTFDWEAYINDEGNFYFLEGSNDALLCGNSSDAGHCPEGYECIKAGRNPNYGYTSYDTFSWAFLALFRLMTQDYWENLFQLTLRAAGKTYMIFFVVIIFLGSFYLINLILAVVAMAYAEQNEATLAEDQEKEEEFQQMLEKYKKHQEELEKAKAAQALESGEEADGDPTHNKDCNGSLDASGEKGPPRPSCSADSAISDAMEELEEAHQKCPPWWYKCAHKVLIWNCCAPWVKFKHIIYLIVMDPFVDLGITICIVLNTLFMAMEHYPMTEHFDNVLSVGNLVFTGIFTAEMVLKLIAMDPYEYFQQGWNIFDSFIVTLSLVELGLANVQGLSVLRSFRLLRVFKLAKSWPTLNMLIKIIGNSVGALGNLTLVLAIIVFIFAVVGMQLFGKSYKECVCKIASDCNLPRWHMNDFFHSFLIVFRILCGEWIETMWDCMEVAGQAMCLTVFLMVMVIGNLVVLNLFLALLLSSFSADSLAASDEDGEMNNLQIAIGRIKWGIGFAKTFLLGLLRGKILSPKEIILSLGEPGGAGENAEESTPEDEKKEPPPEDKELKDNHILNHVGLTDGPRSSIELDHLNFINNPYLTIQVPIASEESDLEMPTEEETDAFSEPEDIKKPLQPLYDGNSSVCSTADYKPPEEDPEEQAEENPEGEQPEECFTEACVKRCPCLYVDISQGRGKMWWTLRRACFKIVEHNWFETFIVFMILLSSGALAFEDIYIEQRRVIRTILEYADKVFTYIFILEMLLKWVAYGFKVYFTNAWCWLDFLIVDVSIISLVANWLGYSELGPIKSLRTLRALRPLRALSRFEGMRVVVNALLGAIPSIMNVLLVCLIFWLIFSIMGVNLFAGKFYYCVNTTTSERFDISVVNNKSESESLMYTGQVRWMNVKVNYDNVGLGYLSLLQVATFKGWMDIMYAAVDSREKEEQPHYEVNLYMYLYFVIFIIFGSFFTLNLFIGVIIDNFNQQKKKFGGKDIFMTEEQKKYYNAMKKLGSKKPQKPIPRPQNKIQGMVYDFVTKQVFDISIMILICLNMVTMMVETDDQSQLKVDILYNINMVFIIIFTGECVLKMFALRHYYFTIGWNIFDFVVVILSIVGLALSDLIQKYFVSPTLFRVIRLARIGRVLRLIRGAKGIRTLLFALMMSLPALFNIGLLLFLVMFIYSIFGMSNFAYVKKESGIDDMFNFETFGNSIICLFEITTSAGWDGLLNPILNSGPPDCDPTLENPGTNVRGDCGNPSIGICFFCSYIIISFLIVVNMYIAIILENFNVATEESSEPLSEDDFEMFYETWEKFDPDATQFIDYSRLSDFVDTLQEPLKIAKPNKIKLITLDLPMVPGDKIHCLDILFALTKEVLGDSGEMDALKQTMEEKFMAANPSKVSYEPITTTLKRKQEEVCAIKIQRAYRRHLLQRSVKQASYMYRHSQDGNDDGAPEKEGLLANTMNKMYGHEKEGDGVQSQGEEEKASTEDAGPTVEPEPTSSSDTALTPSPPPLPPSSSPPQGQTVRPGVKESLV

208.9 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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