Recombinant Human DNA-binding protein inhibitor ID-1 (ID1)

Uniprot Id

P41134

Target Species

Human

Target Name

ID1

Target Full Name

DNA-binding protein inhibitor ID-1

Target Function

Transcriptional regulator (lacking a basic DNA binding domain) which negatively regulates the basic helix-loop-helix (bHLH) transcription factors by forming heterodimers and inhibiting their DNA binding and transcriptional activity. Implicated in regulating a variety of cellular processes, including cellular growth, senescence, differentiation, apoptosis, angiogenesis, and neoplastic transformation. Inhibits skeletal muscle and cardiac myocyte differentiation. Regulates the circadian clock by repressing the transcriptional activator activity of the CLOCK-ARNTL/BMAL1 heterodimer.

Target Subcellular Location

Cytoplasm. Nucleus.

Target Research Area

Cancer

Target Synonyms

bHLHb24; Class B basic helix-loop-helix protein 24; dJ857M17.1.2 (inhibitor of DNA binding 1, dominant negative helix-loop-helix protein); DNA binding protein inhibitor ID 1; DNA binding protein inhibitor ID1; DNA-binding protein inhibitor ID-1; Dominant negative helix loop helix protein; ID 1; ID; ID1; ID1_HUMAN; Inhibitor of Differentiation 1; Inhibitor of DNA binding 1; inhibitor of DNA binding 1, dominant negative helix-loop-helix protein

Target Background

The protein encoded by this gene is a helix-loop-helix (HLH) protein that can form heterodimers with members of the basic HLH family of transcription factors. The encoded protein has no DNA binding activity and therefore can inhibit the DNA binding and transcriptional activation ability of basic HLH proteins with which it interacts. This protein may play a role in cell growth, senescence, and differentiation. Two transcript variants encoding different isoforms have been found for this gene.