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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P10828: Variant p.Ala234Thr

Thyroid hormone receptor beta
Gene: THRB
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Variant information Variant position: help 234 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 Alanine (A) to Threonine (T) at position 234 (A234T, p.Ala234Thr). 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
Variant description: help In GRTHD; impairs hormone binding and ligand-dependent conformational changes. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 234 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 461 The length of the canonical sequence.
Location on the sequence: help PTDEEWELIKTVTEAHVATN A QGSHWKQKRKFLPEDIGQAP 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                         PTDEEWELIKTVTEAHVATNAQGSHWKQKRKFL---------PEDIGQAP

Mouse                         PTDEEWELIKTVTEAHVATNAQGSHWKQKRKFL--------

Rat                           PTDEEWELIKTVTEAHVATNAQGSHWKQKRKFL--------

Chicken                       PTDEEWELIKIVTEAHVATNAQGSHWKQKRKFL--------

Zebrafish                     PTQEEWEMIRVVTEAHMATNAQGNHWKQKRKFLSAVGVKEA
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 – 461 Thyroid hormone receptor beta
Domain 217 – 461 NR LBD
Mutagenesis 243 – 243 R -> Q. Impairs hormone binding and ligand-dependent conformational changes.
Beta strand 233 – 235



Literature citations
Thyroid hormone receptor-beta mutations conferring hormone resistance and reduced corepressor release exhibit decreased stability in the N-terminal ligand-binding domain.
Huber B.R.; Desclozeaux M.; West B.L.; Cunha-Lima S.T.; Nguyen H.T.; Baxter J.D.; Ingraham H.A.; Fletterick R.J.;
Mol. Endocrinol. 17:107-116(2003)
Cited for: X-RAY CRYSTALLOGRAPHY (2.40 ANGSTROMS) OF 202-461 OF VARIANT GRTHD THR-234; CHARACTERIZATION OF VARIANT GRTHD THR-234; MUTAGENESIS OF ARG-243; A point mutation (Ala229 to Thr) in the hinge domain of the c-erbA beta thyroid hormone receptor gene in a family with generalized thyroid hormone resistance.
Behr M.; Loos U.;
Mol. Endocrinol. 6:1119-1126(1992)
Cited for: VARIANT GRTHD THR-234;
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.