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UniProtKB/Swiss-Prot Q96RI0: Variant p.Ala120Thr

Proteinase-activated receptor 4
Gene: F2RL3
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Variant information Variant position: help 120 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LB/B 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 Alanine (A) to Threonine (T) at position 120 (A120T, p.Ala120Thr). 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 small size and hydrophobic (A) to medium size and polar (T) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help 0 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
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 120 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 385 The length of the canonical sequence.
Location on the sequence: help WVLATQAPRLPSTMLLMNLA A ADLLLALALPPRIAYHLRGQ 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                         WVLATQAPRLPSTMLLMNLAAA--DLLLALALPPRIAYHLRGQ

Mouse                         WVLATRVPRLPSTILLMNLAVA--DLLLALVLPPRLAYHLR

Rat                           WVLATRVPRLPSTILLMNLAVA--DLLLALVLPPRLVYHLR

Caenorhabditis elegans        YTLTRRAVKIMKYDKLRKITNGWENIRSEMSILRRMNHRNV
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 48 – 385 Proteinase-activated receptor 4
Transmembrane 109 – 129 Helical; Name=2



Literature citations
Gene and locus structure and chromosomal localization of the protease-activated receptor gene family.
Kahn M.L.; Hammes S.R.; Botka C.; Coughlin S.R.;
J. Biol. Chem. 273:23290-23296(1998)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; VARIANT THR-120; A dual thrombin receptor system for platelet activation.
Kahn M.L.; Zheng Y.-W.; Huang W.; Bigornia V.; Zeng D.; Moff S.; Farese R.V. Jr.; Tam C.; Coughlin S.R.;
Nature 394:690-694(1998)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; VARIANT THR-120; Cloning and characterization of human protease-activated receptor 4.
Xu W.-F.; Andersen H.; Whitmore T.E.; Presnell S.R.; Yee D.P.; Ching A.; Gilbert T.; Davie E.W.; Foster D.C.;
Proc. Natl. Acad. Sci. U.S.A. 95:6642-6646(1998)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; MUTAGENESIS OF ARG-47 AND ARG-68; VARIANT THR-120;
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.