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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q07837: Variant p.Tyr151Cys

Amino acid transporter heavy chain SLC3A1
Gene: SLC3A1
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Variant information Variant position: help 151 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 Tyrosine (Y) to Cysteine (C) at position 151 (Y151C, p.Tyr151Cys). 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 aromatic (Y) to medium size and polar (C) 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 CSNU. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 151 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 685 The length of the canonical sequence.
Location on the sequence: help FKDSNKDGNGDLKGIQDKLD Y ITALNIKTVWITSFYKSSLK 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                         FKDSNKDGNGDLKGIQDKLDYITALNIKTVWITSFYKSSLK

Mouse                         FKDSDKDGNGDLKGIQEKLDYITALNIKTLWITSFYKSSLK

Rat                           FKDSDKDGNGDLKGIQEKLDYITALNIKTIWITSFYKSPLK

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 – 685 Amino acid transporter heavy chain SLC3A1
Topological domain 109 – 685 Extracellular
Alternative sequence 1 – 278 Missing. In isoform B.
Alternative sequence 9 – 377 Missing. In isoform D.
Helix 149 – 154



Literature citations
Identification of 12 novel mutations in the SLC3A1 gene in Swedish cystinuria patients.
Harnevik L.; Fjellstedt E.; Molbaek A.; Tiselius H.-G.; Denneberg T.; Soederkvist P.;
Hum. Mutat. 18:516-525(2001)
Cited for: VARIANTS CSNU CYS-151; LYS-253; HIS-362; ARG-398; HIS-461; THR-467; VAL-481; LYS-482; ARG-510; THR-584; SER-599 AND GLU-600; VARIANT ILE-618;
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.