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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P10828: Variant p.Leu346Phe

Thyroid hormone receptor beta
Gene: THRB
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Variant information Variant position: help 346 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 Leucine (L) to Phenylalanine (F) at position 346 (L346F, p.Leu346Phe). 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 medium size and hydrophobic (L) to large size and aromatic (F) 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. Any additional useful information about the variant.


Sequence information Variant position: help 346 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 ETLTLNGEMAVTRGQLKNGG L GVVSDAIFDLGMSLSSFNLD 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                         ETLTLNGEMAVTRGQLKNGGLGVVSDAIFDLGMSLSSFNLD

Mouse                         ETLTLNGEMAVTRGQLKNGGLGVVSDAIFDLGMSLSSFNLD

Rat                           ETLTLNGEMAVTRGQLKNGGLGVVSDAIFDLGMSLSSFNLD

Chicken                       ETLTLNGEMAVTRGQLKNGGLGVVSDAIFDLGMSLSSFNLD

Zebrafish                     DTLTLNGEMAVTRGQLKNGGLGVVSDAIFDLGVSLSSFNLD

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
Region 244 – 461 Interaction with NR2F6
Binding site 331 – 331
Binding site 331 – 331
Mutagenesis 331 – 331 N -> S. No effect on thyroid hormone binding.
Mutagenesis 355 – 355 D -> R. Stabilizes homodimer.
Turn 344 – 347



Literature citations
Genotyping of resistance to thyroid hormone in South American population. Identification of seven novel missense mutations in the human thyroid hormone receptor beta gene.
Rivolta C.M.; Olcese M.C.; Belforte F.S.; Chiesa A.; Gruneiro-Papendieck L.; Iorcansky S.; Herzovich V.; Cassorla F.; Gauna A.; Gonzalez-Sarmiento R.; Targovnik H.M.;
Mol. Cell. Probes 23:148-153(2009)
Cited for: VARIANTS GRTHD GLY-268; ASP-331; PRO-335; PRO-341; PHE-346; MET-431; THR-447; LEU-453; THR-453 AND CYS-459;
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.