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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P55017: Variant p.Arg642Gly

Solute carrier family 12 member 3
Gene: SLC12A3
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Variant information Variant position: help 642 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 Arginine (R) to Glycine (G) at position 642 (R642G, p.Arg642Gly). 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 large size and basic (R) to glycine (G) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -2 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 GTLMNS. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 642 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 1021 The length of the canonical sequence.
Location on the sequence: help NLALSYSVGLNEVEDHIKNY R PQCLVLTGPPNFRPALVDFV 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                         NLALSYSVGLNEVEDHIKNYRPQCLVLTGPPNFRPALVDFV

Mouse                         NLALSYSVGLNEVEDHIKNYRPQCLVLTGPPNFRPALVDFV

Rat                           NLALSYSVGLNEVEDHIKNYRPQCLVLTGPPNFRPALVDFV
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 – 1021 Solute carrier family 12 member 3
Topological domain 600 – 1021 Cytoplasmic
Binding site 648 – 648
Binding site 655 – 655



Literature citations
Gitelman's syndrome revisited: an evaluation of symptoms and health-related quality of life.
Cruz D.N.; Shaer A.J.; Bia M.J.; Lifton R.P.; Simon D.B.;
Kidney Int. 59:710-717(2001)
Cited for: VARIANTS GTLMNS PHE-154; LEU-178; GLN-209; ARG-284; VAL-313; TRP-321; TRP-334; CYS-399; LEU-555; LEU-615; GLY-642; LEU-643 AND VAL-729; Identification of fifteen novel mutations in the SLC12A3 gene encoding the Na-Cl Co-transporter in Italian patients with Gitelman syndrome.
Syren M.-L.; Tedeschi S.; Cesareo L.; Bellantuono R.; Colussi G.; Procaccio M.; Ali A.; Domenici R.; Malberti F.; Sprocati M.; Sacco M.; Miglietti N.; Edefonti A.; Sereni F.; Casari G.; Coviello D.A.; Bettinelli A.;
Hum. Mutat. 20:78-78(2002)
Cited for: VARIANTS GTLMNS GLN-158; MET-163; ARG-172; TRP-209; VAL-316; VAL-374; GLU-463; THR-464; LEU-615; TRP-615; GLY-642; HIS-642; MET-677; CYS-852; SER-852; GLY-958 AND TYR-985; VARIANT GLN-904; Novel NCC mutants and functional analysis in a new cohort of patients with Gitelman syndrome.
Glaudemans B.; Yntema H.G.; San-Cristobal P.; Schoots J.; Pfundt R.; Kamsteeg E.J.; Bindels R.J.; Knoers N.V.; Hoenderop J.G.; Hoefsloot L.H.;
Eur. J. Hum. Genet. 20:263-270(2012)
Cited for: VARIANTS GTLMNS MET-60; HIS-62; GLN-83; TRP-83; ASP-121; CYS-135; CYS-145; MET-150; MET-153; PRO-157; LEU-158; MET-163; VAL-166; ARG-172; LEU-178; THR-192; ILE-194; GLN-209; ARG-235; ASN-259; PRO-272; MET-304; PRO-304; VAL-313; TRP-321; TRP-334; GLU-374; MET-382; ILE-392; CYS-399; 433-GLN--CYS-436 DELINS LEU; SER-439; SER-442; ARG-463; THR-464; CYS-475; HIS-489; CYS-507; THR-523; SER-534; LEU-536; GLY-546; LEU-555; ARG-560; ASN-566 DEL; LEU-615; CYS-642; CYS-642; GLY-642; HIS-642; LEU-643; MET-647; HIS-655; LYS-ALA-PHE-TYR-SER-ASP-VAL-ILE-713 INS; VAL-729; ARG-735; ARG-741; LEU-751; THR-824; ASN-839; PHE-849; PRO-850; CYS-852; CYS-862; THR-872; GLN-887; TRP-934; TRP-935; GLN-955; GLY-958; ARG-980; TYR-985; GLN-1009 AND ARG-1021; CHARACTERIZATION OF VARIANT GTLMNS ASP-121; ILE-392; SER-442; CYS-475; HIS-489; LEU-751 AND ARG-1021; FUNCTION; SUBCELLULAR LOCATION;
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.