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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P16473: Variant p.Ala703Gly

Thyrotropin receptor
Gene: TSHR
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Variant information Variant position: help 703 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 Glycine (G) at position 703 (A703G, p.Ala703Gly). 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 glycine (G) 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

Polymorphism: help The Asp727Glu polymorphism is associated with Graves disease in a Russian population. The Glu727 allele and the heterozygous Asp727Glu genotype are related to higher risk of the disease. The Asp727Glu polymorphism significantly ameliorates G(s)alpha protein activation in the presence of the gain-of-function mutation Ala593Asn although it is functionally inert in the context of the wild-type TSHR. Additional information on the polymorphism described.


Sequence information Variant position: help 703 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 764 The length of the canonical sequence.
Location on the sequence: help KAFQRDVFILLSKFGICKRQ A QAYRGQRVPPKNSTDIQVQK 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                         KAFQRDVFILLSKFGICKRQAQAYRGQRVPPKNSTDIQVQK

                              KAFQRDVFILLSKFGICKRQAQAYRGQRVSPKNSAGIQIQK

Mouse                         KAFQRDVFILLSKFGICKRQAQAYQGQRVCPNNSTGIQIQK

Rat                           KAFQRDVFILLSKFGLCKHQAQAYQAQRVCPNNNTGIQIQK

Pig                           KAFQRDVFILLSKFGFCKRQAQAYRGQRVSPKNSTGIQVQK

Bovine                        KAFQRDVFMLLSKFGICKRQAQAYRGQRVSPKNSTGIRVQK

Sheep                         KAFQRDVFMLLSKFGICKRQAQAYRGQRVSSKNSTGIRVQK

Cat                           KTFQRDVFILLSKFGICKRQAQAYRGQRVSPKNSTGIQVQK

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 21 – 764 Thyrotropin receptor
Topological domain 683 – 764 Cytoplasmic
Alternative sequence 254 – 764 Missing. In isoform Short.
Alternative sequence 275 – 764 Missing. In isoform 3.



Literature citations
Germline polymorphism of codon 727 of human thyroid-stimulating hormone receptor is associated with toxic multinodular goiter.
Gabriel E.M.; Bergert E.R.; Grant C.S.; van Heerden J.A.; Thompson G.B.; Morris J.C.;
J. Clin. Endocrinol. Metab. 84:3328-3335(1999)
Cited for: VARIANTS MET-606; GLY-703; GLU-720 AND GLU-727;
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.