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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P35670: Variant p.Met645Arg

Copper-transporting ATPase 2
Gene: ATP7B
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Variant information Variant position: help 645 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LP/P [Disclaimer] The variants are classified into three categories: LP/P, LB/B and US.
  • LP/P: likely pathogenic or pathogenic.
  • LB/B: likely benign or benign.
  • US: uncertain significance

Residue change: help From Methionine (M) to Arginine (R) at position 645 (M645R, p.Met645Arg). 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: help Change from medium size and hydrophobic (M) to large size and basic (R) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -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: help In WD; also found in a patient with hypoceruloplasminemia without clinical manifestations of WD in the central nervous system or liver; a liver biopsy of the patient with hypoceruloplasminemia shows no copper or iron accumulation in Kupffer cells or hepatocytes; due to a nucleotide substitution that also results in out-of-frame partial skipping of exon 6, stop gain and reduced expression of the truncated protein; variant R-645 has no effect on protein localization; no effect on copper transport; does not affect interaction with COMMD1. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 645 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 1465 The length of the canonical sequence.
Location on the sequence: help IGFHASLAQRNPNAHHLDHK M EIKQWKKSFLCSLVFGIPVM 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: help The multiple alignment of the region surrounding the variant against various orthologous sequences.
Human                         IGFHASLAQRNPNAHHLDHKMEIKQWKKSFLCSLVFGIPVM

Mouse                         IGFHASLAQRNPNAHHLDHKTEIKQWKKSFLCSLVFGIPVM

Rat                           IGFHASLAHRNPNAHHLDHKTEIKQWKKSFLCSLVFGIPVM

Sheep                         IGFRASLAQRIPNAHHLDHKVEIKQWKNSFLCSLVFGIPVM

Sequence annotation in neighborhood: help 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 – 1465 Copper-transporting ATPase 2
Topological domain 1 – 653 Cytoplasmic
Alternative sequence 234 – 1465 RPLSSANQNFNNSETLGHQGSHVVTLQLRIDGMHCKSCVLNIEENIGQLLGVQSIQVSLENKTAQVKYDPSCTSPVALQRAIEALPPGNFKVSLPDGAEGSGTDHRSSSSHSPGSPPRNQVQGTCSTTLIAIAGMTCASCVHSIEGMISQLEGVQQISVSLAEGTATVLYNPSVISPEELRAAIEDMGFEASVVSESCSTNPLGNHSAGNSMVQTTDGTPTSVQEVAPHTGRLPANHAPDILAKSPQSTRAVAPQKCFLQIKGMTCASCVSNIERNLQKEAGVLSVLVALMAGKAEIKYDPEVIQPLEIAQFIQDLGFEAAVMEDYAGSDGNIELTITGMTCASCVHNIESKLTRTNGITYASVALATSKALVKFDPEIIGPRDIIKIIEEIGFHASLAQRNPNAHHLDHKMEIKQWKKSFLCSLVFGIPVMALMIYMLIPSNEPHQSMVLDHNIIPGLSILNLIFFILCTFVQLLGGWYFYVQAYKSLRHRSANMDVLIVLATSIAYVYSLVILVVAVAEKAERSPVTFFDTPPMLFVFIALGRWLEHLAKSKTSEALAKLMSLQATEATVVTLGEDNLIIREEQVPMELVQRGDIVKVVPGGKFPVDGKVLEGNTMADESLITGEAMPVTKKPGSTVIAGSINAHGSVLIKATHVGNDTTLAQIVKLVEEAQMSKAPIQQLADRFSGYFVPFIIIMSTLTLVVWIVIGFIDFGVVQRYFPNPNKHISQTEVIIRFAFQTSITVLCIACPCSLGLATPTAVMVGTGVAAQNGILIKGGKPLEMAHKIKTVMFDKTGTITHGVPRVMRVLLLGDVATLPLRKVLAVVGTAEASSEHPLGVAVTKYCKEELGTETLGYCTDFQAVPGCGIGCKVSNVEGILAHSERPLSAPASHLNEAGSLPAEKDAVPQTFSVLIGNREWLRRNGLTISSDVSDAMTDHEMKGQTAILVAIDGVLCGMIAIADAVKQEAALAVHTLQSMGVDVVLITGDNRKTARAIATQVGINKVFAEVLPSHKVAKVQELQNKGKKVAMVGDGVNDSPALAQADMGVAIGTGTDVAIEAADVVLIRNDLLDVVASIHLSKRTVRRIRINLVLALIYNLVGIPIAAGVFMPIGIVLQPWMGSAAMAASSVSVVLSSLQLKCYKKPDLERYEAQAHGHMKPLTASQVSVHIGMDDRWRDSPRATPWDQVSYVSQVSLSSLTSDKPSRHSAAADDDGDKWSLLLNGRDEEQYI -> ETFIFC. In isoform 5.
Alternative sequence 624 – 785 Missing. In isoform 2.
Mutagenesis 653 – 653 S -> FDE. Altered copper-induced relocalization.
Helix 644 – 657



Literature citations
Distinct Wilson's disease mutations in ATP7B are associated with enhanced binding to COMMD1 and reduced stability of ATP7B.
de Bie P.; van de Sluis B.; Burstein E.; van de Berghe P.V.; Muller P.; Berger R.; Gitlin J.D.; Wijmenga C.; Klomp L.W.;
Gastroenterology 133:1316-1326(2007)
Cited for: SUBCELLULAR LOCATION; INTERACTION WITH COMMD1 AND ATOX1; CHARACTERIZATION OF VARIANTS WD SER-41; VAL-85; SER-486; SER-492; HIS-532; LYS-541; ASP-591; PRO-604; GLN-616; TRP-616; ALA-626; SER-641; HIS-642 AND ARG-645; Twenty-four novel mutations in Wilson disease patients of predominantly Italian origin.
Lepori M.B.; Lovicu M.; Dessi V.; Zappu A.; Incollu S.; Zancan L.; Giacchino R.; Iorio R.; Vajro P.; Maggiore G.; Marcellini M.; Barbera C.; Pellecchia M.T.; Simonetti R.; Kostic V.; Farci A.M.; Solinas A.; De Virgiliis S.; Cao A.; Loudianos G.;
Genet. Test. 11:328-332(2007)
Cited for: VARIANTS WD ARG-645; VAL-769; GLN-778; TRP-778; PRO-827; ALA-858; VAL-874; PHE-899; TRP-919; MET-935; TRP-969; MET-977; VAL-982; MET-991; ARG-1012; VAL-1012; VAL-1018; LYS-1064; SER-1099; CYS-1151; MET-1220; MET-1288; PRO-1322; LYS-1332; ASP-1341 AND LEU-1369; Diverse functional properties of Wilson disease ATP7B variants.
Huster D.; Kuehne A.; Bhattacharjee A.; Raines L.; Jantsch V.; Noe J.; Schirrmeister W.; Sommerer I.; Sabri O.; Berr F.; Moessner J.; Stieger B.; Caca K.; Lutsenko S.;
Gastroenterology 142:947-956(2012)
Cited for: CHARACTERIZATION OF VARIANTS WD VAL-85; SER-492; TRP-616; ALA-626; ARG-645; SER-710; LEU-760; ASN-765; VAL-769; LEU-840; THR-857; VAL-874; GLN-969; LEU-992; LEU-1052; LYS-1064; GLN-1069; PHE-1083; VAL-1213; VAL-1222; ARG-1266; SER-1270 AND LEU-1273; CHARACTERIZATION OF VARIANTS ALA-406; LEU-456 AND ARG-832; MUTAGENESIS OF ASP-1027 AND THR-1031; FUNCTION; CATALYTIC ACTIVITY; SUBCELLULAR LOCATION; A genetic study of Wilson's disease in the United Kingdom.
Coffey A.J.; Durkie M.; Hague S.; McLay K.; Emmerson J.; Lo C.; Klaffke S.; Joyce C.J.; Dhawan A.; Hadzic N.; Mieli-Vergani G.; Kirk R.; Elizabeth Allen K.; Nicholl D.; Wong S.; Griffiths W.; Smithson S.; Giffin N.; Taha A.; Connolly S.; Gillett G.T.; Tanner S.; Bonham J.; Sharrack B.; Palotie A.; Rattray M.; Dalton A.; Bandmann O.;
Brain 136:1476-1487(2013)
Cited for: VARIANTS WD TRP-136; TRP-148; CYS-382; ALA-536; LYS-541; ILE-597; CYS-614; SER-641; ARG-645; ILE-665; ALA-731; PRO-745; VAL-769; TRP-778; ARG-869; TRP-919; VAL-936; MET-977; MET-991; ALA-995; ILE-1017; VAL-1021; TRP-1041; VAL-1058; GLN-1069; SER-1070; VAL-1074; GLY-1250; ARG-1266; SER-1270; ILE-1298; LEU-1298; TYR-1431 AND PHE-1432; Distinct phenotype of a Wilson disease mutation reveals a novel trafficking determinant in the copper transporter ATP7B.
Braiterman L.T.; Murthy A.; Jayakanthan S.; Nyasae L.; Tzeng E.; Gromadzka G.; Woolf T.B.; Lutsenko S.; Hubbard A.L.;
Proc. Natl. Acad. Sci. U.S.A. 111:E1364-E1373(2014)
Cited for: CHARACTERIZATION OF VARIANTS WD ALA-626; TYR-639; SER-641; HIS-642; ARG-645 AND TYR-653; MUTAGENESIS OF SER-653; FUNCTION; SUBCELLULAR LOCATION; Identification and analysis of mutations in the Wilson disease gene (ATP7B): population frequencies, genotype-phenotype correlation, and functional analyses.
Shah A.B.; Chernov I.; Zhang H.T.; Ross B.M.; Das K.; Lutsenko S.; Parano E.; Pavone L.; Evgrafov O.; Ivanova-Smolenskaya I.A.; Anneren G.; Westermark K.; Urrutia F.H.; Penchaszadeh G.K.; Sternlieb I.; Scheinberg I.H.; Gilliam T.C.; Petrukhin K.;
Am. J. Hum. Genet. 61:317-328(1997)
Cited for: VARIANTS WD ALA-626; ARG-645; PRO-708; SER-710; TRP-778; PHE-795; ARG-869; VAL-1035; ALA-1064; GLN-1069; CYS-1186; TYR-1222; VAL-1266; SER-1270; PRO-1322 AND ARG-1353; Novel ATP7B mutations causing Wilson disease in several Israeli ethnic groups.
Kalinsky H.; Funes A.; Zeldin A.; Pel-Or Y.; Korostishevsky M.; Gershoni-Baruch R.; Farrer L.A.; Bonne-Tamir B.;
Hum. Mutat. 11:145-151(1998)
Cited for: VARIANTS WD ARG-645; ASN-765; GLN-969; ALA-1064; GLN-1069; VAL-1213 AND 1216-VAL-VAL-1217 DEL; VARIANTS SER-565; GLY-723; ARG-832 AND ALA-1140; Further delineation of the molecular pathology of Wilson disease in the Mediterranean population.
Loudianos G.; Dessi V.; Lovicu M.; Angius A.; Nurchi A.; Sturniolo G.C.; Marcellini M.; Zancan L.; Bragetti P.; Akar N.; Yagci R.; Vegnente A.; Cao A.; Pirastu M.;
Hum. Mutat. 12:89-94(1998)
Cited for: VARIANTS WD VAL-85; SER-492; 608-PHE-ASP-609 DELINS TYR; HIS-642; ARG-645; ILE-665; ARG-691; PHE-747; TRP-778; LEU-840; ASN-918; TRP-919; ASN-921; PRO-933; LEU-992; THR-1003; VAL-1018; TRP-1041; VAL-1089; MET-1146; GLY-1183; THR-1183; MET-1216; ASP-1341 AND SER-1358; Mutation analysis of Wilson disease in the Spanish population -identification of a prevalent substitution and eight novel mutations in the ATP7B gene.
Margarit E.; Bach V.; Gomez D.; Bruguera M.; Jara P.; Queralt R.; Ballesta F.;
Clin. Genet. 68:61-68(2005)
Cited for: VARIANTS WD ARG-645; LEU-690; ARG-869; SER-943; MET-977; GLU-1061; GLN-1069; SER-1099; MET-1216 AND PRO-1232; VARIANTS ALA-406; LEU-456; ARG-832 AND ALA-1140; Pathogenic compound heterozygous ATP7B mutations with hypoceruloplasminaemia without clinical features of Wilson's disease.
Arruda W.O.; Munhoz R.P.; de Bem R.S.; Deguti M.M.; Barbosa E.R.; Zavala J.A.; Teive H.A.;
J. Clin. Neurosci. 21:335-336(2014)
Cited for: VARIANT WD ARG-645; ATP7B variant c.1934T > G p.Met645Arg causes Wilson disease by promoting exon 6 skipping.
Merico D.; Spickett C.; O'Hara M.; Kakaradov B.; Deshwar A.G.; Fradkin P.; Gandhi S.; Gao J.; Grant S.; Kron K.; Schmitges F.W.; Shalev Z.; Sun M.; Verby M.; Cahill M.; Dowling J.J.; Fransson J.; Wienholds E.; Frey B.J.;
NPJ Genom. Med. 5:16-16(2020)
Cited for: CHARACTERIZATION OF VARIANT WD ARG-645;
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.