Q99250 (SCN2A_HUMAN) Homo sapiens (Human)

Sodium channel protein type 2 subunit alpha UniProtKBInterProSTRINGInteractive Modelling

2005 aa; Sequence (Fasta) ; (Isoform 2; )

Sequence Features

 330Binds Mu-conotoxin KIIIA
 362Binds Mu-conotoxin KIIIA
 909Binds SCN2B; via carbonyl oxygen
 916Binds Mu-conotoxin KIIIA; via amide nitrogen
 920Binds Mu-conotoxin KIIIA; via carbonyl oxygen
 945Binds Mu-conotoxin KIIIA
 949Binds Mu-conotoxin KIIIA
 1374Binds Mu-conotoxin KIIIA; via amide nitrogen
 1429Binds Mu-conotoxin KIIIA
 1443Binds Mu-conotoxin KIIIA
 1489Important for channel closure
 910Interchain; with SCN2B or SCN4B
 910Interchain; with the conotoxin GVIIJ (when the channel is not linked to SCN2B or SCN4B; the bond to SCN2B or SCN4B protects the channel from the inhibition by toxin)
 12D -> N (probable disease-associated mutation found in a patient with autism spectrum disorder; decreased voltage-gated sodium channel activity; faster channel inactivation; loss of function) VAR_078448
 19R -> K (in dbSNP:rs17183814) VAR_029732 dbSNP
 82D -> G (probable disease-associated mutation found in a patient with autism spectrum disorder; decreased voltage-gated sodium channel activity; decreased expression; loss of function) VAR_078449
 132N -> K (in EIEE11) VAR_078451
 136M -> I (in EIEE11; responds to ketogenic diet) VAR_078452
 169E -> G (in EIEE11) VAR_069996
 172I -> V (found in a patient with non-specific acute encephalopathy; unknown pathological significance; dbSNP:rs1376337813) VAR_075572 dbSNP
 188R -> W (in BFIS3; mutant channel inactivates more slowly than wild-type whereas the sodium channel conductance is not affected; dbSNP:rs121917748) VAR_029733 dbSNP
 191W -> C (in EIEE11; responds to ketogenic diet) VAR_081430
 191W -> G (probable disease-associated mutation found in a patient with drug-resistant focal epilepsy; dbSNP:rs1057519525) VAR_078195 dbSNP
 208V -> E (in BFIS3; gain of function mutation; hyperpolarizing shift of the activation curve) VAR_072745
 211G -> D (in EIEE11; the disease progresses to West syndrome) VAR_078730
 212N -> D (in EIEE11; the disease progresses to West syndrome) VAR_069997
 213V -> D (in EIEE11) VAR_069998
 218T -> K (in EIEE11; unknown pathological significance) VAR_078454
 220R -> G (in EIEE11) VAR_078731
 223R -> Q (in BFIS3; increased voltage-gated sodium channel activity; modified voltage dependence of activation and inactivation; gain of function; dbSNP:rs121917752) VAR_029734 dbSNP
 236T -> S (in EIEE11; dbSNP:rs1235044536) VAR_069999 dbSNP
 240A -> S (in BFIS3) VAR_078455
 251V -> I (in EIEE11; dbSNP:rs1057519528) VAR_078196 dbSNP
 252M -> V (in BFIS3; increased voltage-gated sodium channel activity; increased persistent sodium current; gain of function; dbSNP:rs387906687) VAR_065176 dbSNP
 261V -> M (in BFIS3; increased voltage-gated sodium channel activity; faster recovery from inactivation; gain of function; dbSNP:rs1057520413) VAR_065177 dbSNP
 263A -> T (in EIEE11) VAR_070000
 263A -> V (in EIEE11; also found in patients with neonatal epilepsy with late-onset episodic ataxia; increased voltage-gated sodium channel activity; increased persistent sodium current; gain of function; dbSNP:rs387906686) VAR_065178 dbSNP
 322D -> N (found in a patient with Dravet syndrome; unknown pathological significance) VAR_073428
 328F -> V (found in a patient with acute encephalopathy with biphasic seizures, late reduced diffusion and in a patient with Dravet syndrome; unknown pathological significance; dbSNP:rs781204054) VAR_064331 dbSNP
 379R -> H (probable disease-associated mutation found in a patient with autism spectrum disorder; loss of voltage-gated sodium channel activity; non-conducting; no dominant-negatif effect) VAR_078456
 385F -> Y (in dbSNP:rs2228988) VAR_029735 dbSNP
 424V -> M (probable disease-associated mutation found in a patient with early-onset seizures and Rett-like features, including autistic behavior, limited hand function with chorea and profound intellectual disability) VAR_081431
 430E -> G (in EIEE11; dbSNP:rs796053183) VAR_078457 dbSNP
 430E -> Q (in BFIS3; unknown pathological significance) VAR_078458
 467A -> T (probable disease-associated mutation found in patients with GEFS+; dbSNP:rs745774658) VAR_081432 dbSNP
 524R -> Q (in dbSNP:rs186154973) VAR_029736 dbSNP
 575A -> V (polymorphism; there is no significant effects on the voltage-dependence of the channel; dbSNP:rs986167267) VAR_065179 dbSNP
 649D -> N (found in a patient with Dravet syndrome; unknown pathological significance) VAR_078733
 674T -> K (probable disease-associated mutation found in a patient with autism spectrum disorder) VAR_078734
 773T -> I (in EIEE11; hyperpolarizing shift of the activation curve and increased persitent current; gain of function) VAR_081433
 850R -> P (found in a patient with schizofrenia; unknown pathological significance) VAR_078459
 853R -> Q (in EIEE11; phenotype consistent with West syndrome; decreased neuronal excitability; decreased peak sodium current densities; loss of function; dbSNP:rs794727152) VAR_070001 dbSNP
 856R -> L (in EIEE11) VAR_078460
 873I -> M (in EIEE11) VAR_078735
 876N -> T (in EIEE11; the disease progresses to West syndrome) VAR_070002
 892V -> I (in BFIS3; dbSNP:rs121917751) VAR_029737 dbSNP
 896A -> V (in EIEE11; dbSNP:rs1057519526) VAR_078197 dbSNP
 905K -> N (in EIEE11; dbSNP:rs796053119) VAR_078461 dbSNP
 908K -> E (in BFIS3; increased voltage-gated sodium channel activity; gain of function; dbSNP:rs796053122) VAR_081434 dbSNP
 908K -> R (found in a patient with schizofrenia; unknown pathological significance; dbSNP:rs2228980) VAR_078462 dbSNP
 928F -> C (in EIEE11; mild form with ataxia) VAR_078463
 937R -> C (probable disease-associated mutation found in a patient with autism spectrum disorder; loss of voltage-gated sodium channel activity; non-conducting; dbSNP:rs796053197) VAR_078464 dbSNP
 937R -> H (probable disease-associated mutation found in a patient with autism spectrum disorder; loss of voltage-gated sodium channel activity; non-conducting; dbSNP:rs1553579488) VAR_078465 dbSNP
 976N -> K (found in a patient with autism; unknown pathological significance) VAR_078467
 987S -> I (in EIEE11; dbSNP:rs796053124) VAR_078736 dbSNP
 999E -> K (in EIEE11; the disease progresses to West syndrome; dbSNP:rs796053126) VAR_070003 dbSNP
 999E -> V (in EIEE11) VAR_078737
 1001N -> K (in BFIS3) VAR_078468
 1003L -> I (in BFIS3; dbSNP:rs121917754) VAR_029738 dbSNP
 1128M -> T (found in a patient with acute encephalitis with refractory and repetitive partial seizures; unknown pathological significance; dbSNP:rs373780066) VAR_078470 dbSNP
 1211E -> K (in EIEE11; markedly altered channel voltage- dependence; responds to modified Atkins diet; dbSNP:rs387906684) VAR_065180 dbSNP
 1260K -> E (in EIEE11) VAR_078738
 1260K -> Q (in EIEE11) VAR_078739
 1282V -> F (found in a patient with schizofrenia; unknown pathological significance; dbSNP:rs1184922927) VAR_078471 dbSNP
 1312R -> T (in EIEE11; modified voltage-gated sodium channel activity; activated with lowered voltage sensitivity; disturbed fast and slow inactivation) VAR_073429
 1316A -> V (in EIEE11; dbSNP:rs796053130) VAR_078198 dbSNP
 1319R -> Q (in BFIS3; modified voltage-gated sodium channel activity; modified voltage dependence of activation and inactivation; dbSNP:rs121917753) VAR_029739 dbSNP
 1321E -> K (in BFIS3; unknown pathological significance) VAR_078740
 1323M -> V (in EIEE11; the disease progresses to West syndrome; dbSNP:rs1057519523) VAR_070004 dbSNP
 1326V -> D (in EIEE11; dbSNP:rs796053131) VAR_078472 dbSNP
 1326V -> L (in EIEE11; the disease progresses to West syndrome) VAR_070005
 1330L -> F (in BFIS3; increased voltage-gated sodium channel activity; decreased overall channel availability during repetitive stimulation; gain of function; no effect on kinetics of activation or inactivation; no effect on voltage dependence of activation; dbSNP:rs121917749) VAR_029740 dbSNP
 1336S -> Y (in EIEE11; the disease progresses to West syndrome) VAR_070006
 1338M -> T (in EIEE11) VAR_070007
 1342L -> P (in EIEE11; dbSNP:rs796053134) VAR_078473 dbSNP
 1344C -> Y (in EIEE11; dbSNP:rs1057519527) VAR_078199 dbSNP
 1372G -> R (found in a patient with autism spectrum disorder; unknown pathological significance) VAR_078741
 1386C -> R (probable disease-associated mutation found in a patient with autism spectrum disorder; loss of voltage-gated sodium channel activity; non-conducting) VAR_078474
 1420T -> M (probable disease-associated mutation found in a patient with autism spectrum disorder; decreased voltage-gated sodium channel activity; faster channel inactivation; fewer channels contribution to macroscopic currents and fewer channels expressed on membrane; dbSNP:rs1382026643) VAR_078475 dbSNP
 1422K -> E (probable disease-associated mutation found in a boy with infantile spasms and bitemporal glucose hypometabolism; dbSNP:rs796053137) VAR_070008 dbSNP
 1460G -> R (probable disease-associated mutation found in a patient with non-syndromic intellectual disability and epilepsy) VAR_081435
 1473I -> M (in EIEE11; increased voltage-gated sodium channel activity; markedly altered the voltage-dependence of the channel; gain of function; dbSNP:rs387906685) VAR_065181 dbSNP
 1479Q -> P (in EIEE11) VAR_078744
 1522G -> A (in EIEE11; also found in a patient with neonatal epilepsy and late-onset episodic ataxia; unknown pathological significance; no effect on voltage-gated sodium channel activity; higher current density when associated with G-1882; dbSNP:rs147522594) VAR_078476 dbSNP
 1531Q -> K (in BFIS3; unknown pathological significance) VAR_078746
 1548M -> T (in EIEE11; dbSNP:rs1057519524) VAR_078200 dbSNP
 1559M -> V (found in a patient with schizofrenia; unknown pathological significance; dbSNP:rs1163751310) VAR_078477 dbSNP
 1563L -> V (in BFIS3; increased voltage-gated sodium channel activity; impaired fast inactivation; no effect on kinetics of activation or inactivation; no effect on voltage dependence of activation; gain of function; dbSNP:rs121917750) VAR_029741 dbSNP
 1589Y -> C (in BFIS3; increased voltage-gated sodium channel activity; depolarized shift of steady-state inactivation; increased persistent sodium current; slower fast inactivation; accelerated recovery of fast inactivation; gain of function; dbSNP:rs1553463119) VAR_078478 dbSNP
 1593G -> R (in EIEE11; dbSNP:rs886041259) VAR_078479 dbSNP
 1596I -> S (in BFIS3; unknown pathological significance) VAR_078480
 1623T -> N (in EIEE11; the disease progresses to West syndrome) VAR_070009
 1629R -> L (in EIEE11) VAR_070010
 1634G -> D (found in a patient with episodic ataxia; unknown pathological significance; dbSNP:rs796053159) VAR_081436 dbSNP
 1634G -> V (in EIEE11) VAR_078482
 1641K -> N (in BFIS3; unknown pathological significance; dbSNP:rs767224097) VAR_078747 dbSNP
 1650L -> P (in EIEE11; also found in patients with familial episodic ataxia and impairment of speech development) VAR_078748
 1660L -> W (in EIEE11) VAR_078483
 1744G -> R (probable disease-associated mutation found in a patient with autism spectrum disorder) VAR_078749
 1823D -> A (found in a patient with schizofrenia; unknown pathological significance; dbSNP:rs138497939) VAR_078484 dbSNP
 1829L -> F (in EIEE11; dbSNP:rs1553463676) VAR_078750 dbSNP
 1853H -> R (in EIEE11) VAR_078751
 1882R -> G (probable disease-associated mutation found in a patient with neonatal epilepsy and late-onset episodic ataxia; gain of function mutation resulting in increased voltage-gated sodium channel activity; hyperpolarized activation; higher current density when associated with A- 1522 compared to wild-type or G-1882 alone; dbSNP:rs796053166) VAR_078485 dbSNP
 1882R -> L (in EIEE11; dbSNP:rs794727444) VAR_078486 dbSNP
 1882R -> Q (in EIEE11; increased neuronal excitability; increased peak sodium current densities; gain of function; dbSNP:rs794727444) VAR_078201 dbSNP
 1902R -> T (found in autism; unknown pathological significance) VAR_029742
 1918R -> H (in dbSNP:rs201718767) VAR_078487 dbSNP
 130-148Helical; Name=S1 of repeat I
 156-176Helical; Name=S2 of repeat I
 191-208Helical; Name=S3 of repeat I
 215-231Helical; Name=S4 of repeat I
 251-270Helical; Name=S5 of repeat I
 370-394Pore-forming
 402-422Helical; Name=S6 of repeat I
 760-778Helical; Name=S1 of repeat II
 790-809Helical; Name=S2 of repeat II
 824-843Helical; Name=S3 of repeat II
 846-863Helical; Name=S4 of repeat II
 880-898Helical; Name=S5 of repeat II
 928-948Pore-forming
 962-982Helical; Name=S6 of repeat II
 1210-1227Helical; Name=S1 of repeat III
 1241-1259Helical; Name=S2 of repeat III
 1274-1292Helical; Name=S3 of repeat III
 1301-1319Helical; Name=S4 of repeat III
 1337-1356Helical; Name=S5 of repeat III
 1409-1430Pore-forming
 1448-1469Helical; Name=S6 of repeat III
 1533-1550Helical; Name=S1 of repeat IV
 1562-1580Helical; Name=S2 of repeat IV
 1593-1610Helical; Name=S3 of repeat IV
 1624-1640Helical; Name=S4 of repeat IV
 1660-1677Helical; Name=S5 of repeat IV
 1700-1722Pore-forming
 1753-1775Helical; Name=S6 of repeat IV
 278-338
 912-918
 950-959
 1366-1386
 1731-1746
 102-2005Missing (probable disease-associated mutation found in a patient with intractable epilepsy and severe mental decline; non-conducting; loss of voltage-gated sodium channel activity; dominant-negatif) VAR_078450
 169-2005Missing (found in a patient with schizofrenia; unknown pathological significance) VAR_078453
 583-2005Missing (probable disease-associated mutation found in a patient with autism spectrum disorder) VAR_078732
 959-2005Missing (probable disease-associated mutation found in a patient with autism spectrum disorder; loss of voltage-gated sodium channel activity; non-conducting) VAR_078466
 1013-2005Missing (probable disease-associated mutation found in a patient with autism spectrum disorder; loss of voltage-gated sodium channel activity; non-conducting) VAR_078469
 1398-2005Missing (in EIEE11) VAR_078742
 1435-2005Missing (in EIEE11) VAR_078743
 1515-2005Missing (probable disease-associated mutation found in a patient with autism spectrum disorder) VAR_078745
 128-435Ion transport domain
IPR005821PF00520
 508-709Voltage-gated Na+ ion channel, cytoplasmic domain
IPR024583PF11933
 760-988Ion transport domain
IPR005821PF00520
 997-1203Sodium ion transport-associated
IPR010526PF06512
 1207-1481Ion transport domain
IPR005821PF00520
 1531-1786Ion transport domain
IPR005821PF00520

Sequence Alignments

Experimental structures

DescriptionOligo-stateLigandsStructureRangeDownloadAssess
Human Nav1.2-beta2-KIIIA ternary complex Heteromer
O60939; P0C195;
NAG;BMA;9Z9;NA;6j8e117-1785
Voltage-gated sodium channel 1.2 C-terminal domain in complex with FGF13U and Ca2+/calmodulin Heteromer
P0DP23; Q92913;
CA;4jpz1788-1929
Solution structure of full-length apo mammalian calmodulin bound to the IQ motif of the human volta… Heteromer
P0DP23;
6but1901-1927
Crystal Structure of AnkB Ankyrin Repeats (R1-R9) in Complex with Nav1.2 Ankyrin Binding Domainhomo-2-mer 14×SO4;4rly1102-1120
Solution structure of the human Voltage-gated Sodium Channel, brain isoform (Nav1.2)monomer 2kav1777-1882