Q99250 (SCN2A_HUMAN) Homo sapiens (Human)

Sodium channel protein type 2 subunit alpha UniProtKBInterProSTRINGInteractive Modelling

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

Sequence Features

 1489Important for channel closure.
 910Interchain; with SCN2B or SCN4B.
 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 nonsyndromic 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 found in a patient with neonatal epilepsy with late-onset episodic ataxia and EIEE11; unknown pathological significance; no effect voltage-gated sodium channel activity; higher current density when associated with G-1882; unknown pathological significance; 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.
 278-347
 950-959
 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, cytoplasm ic 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;
9Z9;BMA;NAG;NA;6j8e117-1785
Voltage-gated sodium channel 1.2 C-terminal domain in complex with FGF13U and Ca2+/calmodulin Heteromer
Q92913; P0DP23;
CA;4jpz1788-1929
'Solution structure of full-length apo mammalian calmodulin bound to the IQ motif of the human vo... Heteromer
P0DP24;
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

Homology models built on isoform sequence

Isoform #Oligo-stateLigandsQMEANTemplateRangeSeq id (%)ReportDownloadAssess
2monomer-0.324dck.1.A1780-1932
76.40