Tags: Protein.
DNA-binding protein inhibitor ID-2 is a protein that in humans is encoded by the ID2 gene.The protein encoded by this gene belongs to the inhibitor of DNA binding (ID) family members of which are transcriptional regulators that contain a helix-loop-helix (HLH) domain but not a basic domain. Members of the ID family inhibit the functions of basic helix-loop-helix transcription factors in a dominant-negative manner by suppressing their heterodimerization partners through the HLH domains.