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UniProtKB/Swiss-Prot Q14524: Variant p.Glu1053Lys

Sodium channel protein type 5 subunit alpha
Gene: SCN5A
Variant information

Variant position:  1053
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Disease [Disclaimer]
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants implicated in disease according to literature reports.
  • Polymorphism: Variants not reported to be implicated in disease.
  • Unclassified: Variants with uncertain implication in disease according to literature reports. Evidence against or in favor of a pathogenic role is limited and/or conflicting.

Residue change:  From Glutamate (E) to Lysine (K) at position 1053 (E1053K, p.Glu1053Lys).
Indicates the amino acid change of the variant. The one-letter and three-letter codes for amino acids used in UniProtKB/Swiss-Prot are those adopted by the commission on Biochemical Nomenclature of the IUPAC-IUB.

Physico-chemical properties:  Change from medium size and acidic (E) to large size and basic (K)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  1
The score within a Blosum matrix for the corresponding wild-type to variant amino acid change. The log-odds score measures the logarithm for the ratio of the likelihood of two amino acids appearing by chance. The Blosum62 substitution matrix is used. This substitution matrix contains scores for all possible exchanges of one amino acid with another:
  • Lowest score: -4 (low probability of substitution).
  • Highest score: 11 (high probability of substitution).
More information can be found on the following page

Variant description:  In BRGDA1, ATFB10 and LQT3; abolishes binding to ANK3 and also prevents accumulation of SCN5A at cell surface sites in ventricular cardiomyocytes.
Any additional useful information about the variant.

Other resources:  
Links to websites of interest for the variant.



Sequence information

Variant position:  1053
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  2016
The length of the canonical sequence.

Location on the sequence:   QPGQGTPGDPEPVCVPIAVA  E SDTDDQEEDEENSLGTEEES
The residue change on the sequence. Unless the variant is located at the beginning or at the end of the protein sequence, both residues upstream (20) and downstream (20) of the variant will be shown.

Residue conservation: 
The multiple alignment of the region surrounding the variant against various orthologous sequences.

Human                         QPGQGTPGDPEPVCVPIAVAESDTDDQEEDEENSLGTEEES

Mouse                         RPGQGTPGDTEPVCVPIAVAESDTDDQEEDEENSLGTEEEE

Rat                           RPGQGTPGDSEPVCVPIAVAESDTEDQEEDEENSLGTEEES

Sequence annotation in neighborhood:  
The regions or sites of interest surrounding the variant. In general the features listed are posttranslational modifications, binding sites, enzyme active sites, local secondary structure or other characteristics reported in the cited references. The "Sequence annotation in neighborhood" lines have a fixed format:
  • Type: the type of sequence feature.
  • Positions: endpoints of the sequence feature.
  • Description: contains additional information about the feature.

TypePositionsDescription
Chain 1 – 2016 Sodium channel protein type 5 subunit alpha
Topological domain 939 – 1206 Cytoplasmic


Literature citations

Natural history of Brugada syndrome: insights for risk stratification and management.
Priori S.G.; Napolitano C.; Gasparini M.; Pappone C.; Della Bella P.; Giordano U.; Bloise R.; Giustetto C.; De Nardis R.; Grillo M.; Ronchetti E.; Faggiano G.; Nastoli J.;
Circulation 105:1342-1347(2002)
Cited for: VARIANTS BRGDA1 HIS-27; VAL-226; VAL-230; HIS-282; MET-294; SER-319; PHE-393 DEL; GLN-567; PRO-681; GLU-735; LEU-851; ILE-892; SER-896; LEU-910; CYS-965; LYS-1053; ASN-1236; SER-1293; LYS-1500 DEL; ARG-1740; LYS-1784; HIS-1795 AND LEU-1951; VARIANT GLN-1240;

Nav1.5 E1053K mutation causing Brugada syndrome blocks binding to ankyrin-G and expression of Nav1.5 on the surface of cardiomyocytes.
Mohler P.J.; Rivolta I.; Napolitano C.; LeMaillet G.; Lambert S.; Priori S.G.; Bennett V.;
Proc. Natl. Acad. Sci. U.S.A. 101:17533-17538(2004)
Cited for: VARIANT BRGDA1 LYS-1053; CHARACTERIZATION OF VARIANT BRGDA1 LYS-1053; INTERACTION WITH ANK3;

Cardiac sodium channel (SCN5A) variants associated with atrial fibrillation.
Darbar D.; Kannankeril P.J.; Donahue B.S.; Kucera G.; Stubblefield T.; Haines J.L.; George A.L. Jr.; Roden D.M.;
Circulation 117:1927-1935(2008)
Cited for: VARIANTS ATFB10 ILE-138; LYS-428; ASP-445; LYS-470; ASP-572; LYS-655; LYS-1053; ILE-1131; CYS-1826 AND MET-1951; VARIANTS CYS-34; LEU-216; HIS-376; VAL-461; TRP-481; TYR-524; ARG-558; PHE-618; SER-997; TYR-1103; GLN-1193; LEU-1951 AND LEU-2004;

Spectrum and prevalence of mutations from the first 2,500 consecutive unrelated patients referred for the FAMILION long QT syndrome genetic test.
Kapplinger J.D.; Tester D.J.; Salisbury B.A.; Carr J.L.; Harris-Kerr C.; Pollevick G.D.; Wilde A.A.; Ackerman M.J.;
Heart Rhythm 6:1297-1303(2009)
Cited for: VARIANTS LQT3 GLN-18; HIS-27; GLY-30; GLN-43; LYS-48; SER-52; GLN-53; GLY-104; GLY-115; LEU-125; PRO-212; GLN-222; TRP-225; MET-240; LEU-247; LYS-275; SER-289; TRP-340; CYS-367; MET-370; THR-397; LYS-406; VAL-409; MET-411; GLU-429 DEL; ALA-462; VAL-530; GLN-535; TRP-569; ILE-571; SER-572; VAL-572; 586-ALA-LEU-587 DEL; GLU-615; ARG-639; LYS-654; PRO-673; CYS-689; LEU-701; ILE-731; ARG-750; ASN-772; TYR-816; PHE-848; LYS-960; LEU-965; PHE-981; SER-997; ARG-1004; LYS-1053; MET-1069; VAL-1100; ASN-1114; ASN-1166; SER-1199; ILE-1212 DEL; MET-1283; MET-1304; SER-1325; SER-1326; VAL-1334; VAL-1338; SER-1432; SER-1472; CYS-1473; GLU-1481; LEU-1487; ARG-1488; ASP-1489; ARG-1493; SER-1495; VAL-1498; VAL-1501; ASN-1505; ILE-1532; PHE-1560; MET-1593; SER-1594; ILE-1596; PHE-1617 DEL; GLN-1623; LEU-1623; HIS-1626; CYS-1644; PHE-1650; THR-1652; ASN-1723; TRP-1739; HIS-1761; PHE-1761; MET-1763; MET-1777; MET-1779; LYS-1784; CYS-1795; HIS-1826; GLY-1839; TRP-1897; GLN-1901; ASN-1977; VAL-2004 AND CYS-2012;

An international compendium of mutations in the SCN5A-encoded cardiac sodium channel in patients referred for Brugada syndrome genetic testing.
Kapplinger J.D.; Tester D.J.; Alders M.; Benito B.; Berthet M.; Brugada J.; Brugada P.; Fressart V.; Guerchicoff A.; Harris-Kerr C.; Kamakura S.; Kyndt F.; Koopmann T.T.; Miyamoto Y.; Pfeiffer R.; Pollevick G.D.; Probst V.; Zumhagen S.; Vatta M.; Towbin J.A.; Shimizu W.; Schulze-Bahr E.; Antzelevitch C.; Salisbury B.A.; Guicheney P.; Wilde A.A.; Brugada R.; Schott J.J.; Ackerman M.J.;
Heart Rhythm 7:33-46(2010)
Cited for: VARIANTS TRP-18; CYS-34; HIS-34; LEU-216; SER-286; SER-291; MET-299; CYS-376; GLY-447; ALA-449; VAL-461; SER-475; TRP-481; TYR-524; ARG-558; HIS-568; ARG-579; LYS-592; GLY-596; ALA-601; PHE-618; ASP-638; LEU-656; THR-672; HIS-689; LYS-692; PHE-705; ILE-924; GLN-986; MET-1016; ARG-1040; ALA-1082; LEU-1090; LEU-1098; TYR-1103; LYS-1107; TRP-1116; GLN-1193; MET-1251; SER-1293; PHE-1308; TRP-1512; ASN-1787; THR-1836; LYS-1901; CYS-1919; LEU-1951; GLN-1958; LEU-1962; MET-1968; GLN-1991; LEU-2004 AND ALA-2006; VARIANTS BRGDA1 GLN-18; LYS-70; ASN-84; SER-93; SER-94; GLN-104; TRP-104; LYS-109; GLN-121; TRP-121; GLU-126; PRO-136; MET-146; GLN-161; LYS-161; ASN-175; GLY-178; ARG-182; VAL-185; VAL-204; GLN-212; ILE-220; GLN-222; LEU-223; TRP-225; VAL-226; ILE-232; MET-240; LYS-270; GLN-276; ASP-278; CYS-282; ILE-300; PRO-315; ASN-320; ARG-325; LEU-336; ASP-351; VAL-351; ASN-356; CYS-367; HIS-367; LEU-367; LYS-369; GLY-374; HIS-376; ARG-386; GLU-386; ALA-396; LEU-396; LYS-439; GLY-501; HIS-526; CYS-532; LEU-543; ARG-552; GLU-615; PHE-619; CYS-620; MET-632; ALA-640; ASP-647; LEU-648; TRP-661; GLY-683; LEU-701; LEU-717; VAL-735; LYS-746; ARG-752; GLU-758; ARG-764; ASN-772; SER-773; ILE-789; PRO-808; PRO-839; LEU-851; GLN-867; CYS-878; HIS-878; PRO-886; CYS-893; HIS-893; LYS-901; LEU-910; ARG-915; ARG-917; SER-927; PRO-928; PRO-935; CYS-965; HIS-965; THR-997; LYS-1053; GLY-1055; TYR-1079; VAL-1113; THR-1140; ASN-1219; LYS-1225; HIS-1228; GLN-1232; TRP-1232; PRO-1239; ASN-1243; ASP-1249; GLY-1253; SER-1262; CYS-1271; ASN-1275; GLY-1288; PRO-1311; VAL-1319; GLY-1323; LEU-1332; LEU-1344; ILE-1346; PRO-1346; ARG-1351; MET-1353; TRP-1358; ASN-1359; CYS-1360; TYR-1363; ILE-1382; LEU-1405; MET-1405; ARG-1406; GLU-1406; ARG-1408; CYS-1409; PHE-1412; GLU-1419; ARG-1420; SER-1427; VAL-1428; GLY-1432; SER-1432; VAL-1433; LEU-1438; GLN-1441; LEU-1448; THR-1448; CYS-1449; ASP-1451; TYR-1463; PHE-1468; VAL-1501; LYS-1521; MET-1525; LYS-1548; CYS-1571; LYS-1574; PRO-1582; CYS-1583; HIS-1583; MET-1604; LEU-1613; MET-1620; GLN-1623; GLN-1629; GLU-1642; VAL-1660; ARG-1661; ILE-1667; TYR-1672; THR-1680; THR-1698; ARG-1709; MET-1709; SER-1712; GLY-1714; ASP-1722; ARG-1728; TRP-1728; ARG-1740; ARG-1743; GLU-1743; PHE-1764; MET-1779; LYS-1784; GLU-1832; ILE-1861; ASN-1872; LEU-1903; THR-1924; SER-1935; LYS-1938 AND VAL-2004;

Disclaimer: Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. They are not in any way intended to be used as a substitute for professional medical advice, diagnostic, treatment or care.