DNA-binding protein inhibitor ID-3 is a
protein that in humans is encoded by the ''ID3''
gene
In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a ba ...
.
Function
Members of the ID family of helix-loop-helix (HLH) proteins lack a basic DNA-binding domain and inhibit transcription through formation of nonfunctional dimers that are incapable of binding to DNA.
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Interactions
ID3 (gene) has been shown to
interact
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with
TCF3
Transcription factor 3 (E2A immunoglobulin enhancer-binding factors E12/E47), also known as TCF3, is a protein that in humans is encoded by the ''TCF3'' gene. TCF3 has been shown to directly enhance Hes1 (a well-known target of Notch signaling) ...
.
Repressors of ID3
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 (B-cell translocation gene 2) and in other mammals by the h ...
binds to the promoter of Id3 and represses its activity. By this mechanism, the upregulation of Id3 in the hippocampus caused by BTG2 ablation prevents terminal differentiation of hippocampal neurons.
See also
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Inhibitor of DNA-binding protein
References
Further reading
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External links
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Transcription factors
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