The protein encoded by this gene belongs to the iodothyronine deiodinase family. It catalyzes the conversion of prohormone thyroxine (3,5,3',5'-tetraiodothyronine, T4) to the bioactive thyroid hormone (3,5,3'-triiodothyronine, T3) by outer ring 5'-deiodination. This gene is highly expressed in brain, placenta and mammary gland. It is thought to be responsible for the 'local' production of T3, and thus important in influencing thyroid hormone action in these tissues. Knockout studies in mice suggest that this gene may play an important role in brown adipose tissue lipogenesis, auditory function, and bone formation. This protein is a selenoprotein containing the non-standard amino acid, selenocysteine (Sec), which is encoded by the UGA codon that normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, designated the Sec insertion sequence (SECIS) element, that is necessary for the recognition of UGA as a Sec codon, rather than as a stop signal. Unlike the other two members (DIO1 and DIO3) of this enzyme family, the mRNA for this gene contains an additional in-frame UGA codon that has been reported (in human) to function either as a Sec or a stop codon, resulting in two potential isoforms with one or two Sec residues; however, only the upstream Sec (conserved with the single Sec residue found at the active site in DIO1 and DIO3) was shown to be essential for enzyme activity (PMID:10403186). In addition, the lack of conservation of the protein extension past the second TGA codon suggests that the one-Sec containing isoform represents the canonical form. [provided by RefSeq, Oct 2018]
Compare the differences in orthologous genes between rat, mouse, and human regarding the following aspects:
Gene Length: Chromosomal location and the number of base pairs within the gene.
Transcript Length: MANE (Matched Annotation from NCBI and EMBL-EBI) transcript ID and its sequence length.
Protein Length: MANE protein ID and its length information.
Exon count: The count of exons in the MANE transcript of the gene.
CDS homology: Comparison of CDS splice sequence similarity encoding MANE proteins, with human, mouse, or rat sequence as the baseline (100% reference).
Protein homology: Comparison of amino acid sequence similarity of MANE proteins, using human, mouse, or rat sequence as the baseline (100% reference).
Data Sources: NCBI, ALLIANCE
Transcripts & Proteins
Overview of Current Gene Transcripts, Switchable Between Table and Graph Views:
Table: Provides a summary of transcript sequence length, exon count, CDS (Coding Sequence) length, associated protein sequence ID, protein sequence length, and other relevant information.
Tile: Offers a visual representation of introns, exons, UTRs (Untranslated Regions), and CDS (Coding Sequence).
MANE Select: The primary 1:1 matched representative transcript for human genes.
MANE Plus Clinical: Additional transcripts required for clinical interpretation.
RefSeq Select: The best representative transcript for non-human species (e.g., Mouse) or other RefSeq genes.
Data Source: NCBI
Gene Expression
Current RNA expression levels of the gene across various tissues and cell types, allowing users to sort by tissue type, specific expression values, or alphabetical order.
Data Source: NCBI
Interactions
Interacting Genes of the Current Gene, Including:
Acting, Target: Distinguishes the upstream interacting protein from the downstream target protein in the interaction chain.
Regulation: Four types of regulation.
[] Up-Regulates.
[] Down-Regulates.
[] Form Complex.
[] Unknown.
Solid lines indicate direct interactions, dashed lines represent indirect ones.
Acting, Target: Distinguishes the upstream interacting protein from the downstream target protein in the interaction chain.
Details: Indicates changes in protein quantity or activity post-interaction.
Mechanism: Elucidates functional transitions resulting from the interaction.
Residues: Specifies the particular amino acid residues involved in the interaction, along with the studied species, tissue, or cell.
References: Summarizes and displays relevant interaction studies, their publications, and overviews, with indications of the studied species, tissue, or cell.
Score: Quantifies the tightness of the interaction through a scoring system. Higher scores imply stronger associations.
Data Source: Signor, PubMed
Related Mouse Models
Mouse Models Related to the Current Gene. Click on the model name to view detailed information.
Data Source: MGI, Cyagen
References Literature
Most Relevant Literature for the Current Gene, Filterable by Year, Article Type, and Sortable by Impact Factor.