ID1 Antibody – Rabbit Polyclonal

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. [provided by RefSeq, Jul 2008]

ID1: ID (inhibitor of DNA binding) HLH proteins lack a basic DNA-binding domain but are able to form heterodimers with other HLH proteins, thereby inhibiting DNA binding. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: DNA-binding; Transcription, coactivator/corepressor

Chromosomal Location of Human Ortholog: 20q11

Cellular Component: nucleoplasm; Golgi apparatus; nucleus

Molecular Function: protein dimerization activity; protein binding; transcription factor activity

Biological Process: circadian rhythm; collagen metabolic process; blood vessel endothelial cell migration; protein destabilization; transcription, DNA-dependent; negative regulation of transcription factor activity; heart development; negative regulation of transcription from RNA polymerase II promoter; regulation of angiogenesis; negative regulation of DNA binding; response to antibiotic; BMP signaling pathway; transforming growth factor beta receptor signaling pathway; regulation of MAPKKK cascade; blood vessel morphogenesis; negative regulation of osteoblast differentiation; angiogenesis; endothelial cell morphogenesis; negative regulation of transcription, DNA-dependent; negative regulation of apoptosis