ID3 (gene)
Encyclopedia
DNA-binding protein inhibitor ID-3 is a protein
Protein
Proteins are biochemical compounds consisting of one or more polypeptides typically folded into a globular or fibrous form, facilitating a biological function. A polypeptide is a single linear polymer chain of amino acids bonded together by peptide bonds between the carboxyl and amino groups of...

 that in humans is encoded by the ID3 gene
Gene
A gene is a molecular unit of heredity of a living organism. It is a name given to some stretches of DNA and RNA that code for a type of protein or for an RNA chain that has a function in the organism. Living beings depend on genes, as they specify all proteins and functional RNA chains...

.

Interactions

ID3 (gene) has been shown to interact
Protein-protein interaction
Protein–protein interactions occur when two or more proteins bind together, often to carry out their biological function. Many of the most important molecular processes in the cell such as DNA replication are carried out by large molecular machines that are built from a large number of protein...

 with TCF3
TCF3
Transcription factor 3 , also known as TCF3, is a protein that in humans is encoded by the TCF3 gene...

.

Repressors of ID3

BTG2
BTG2
Protein BTG2 also known as BTG family member 2 or NGF-inducible anti-proliferative protein PC3 or NGF-inducible protein TIS21, is a protein that in humans is encoded by the BTG2 gene and in other mammals by the homologous Btg2 gene...

 binds to the promoter of Id3 and represses its activity. By this mechanism, the upregulation of Id3 in the hippocampus caused by BTG2
BTG2
Protein BTG2 also known as BTG family member 2 or NGF-inducible anti-proliferative protein PC3 or NGF-inducible protein TIS21, is a protein that in humans is encoded by the BTG2 gene and in other mammals by the homologous Btg2 gene...

ablation prevents terminal differentiation of hippocampal neurons.
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