MyBioSource.com's ID2 Antibody is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: ELISA, Immunohistochemistry, and Western Blot. The ID2 Antibody was generated using ID2 as the antigen and it reacts with Human, Mouse, and Rat.
Description
Description: Inhibitor of DNA-binding-2 (Id2) is a member of the Id proteins which belong to the helix-loop-helix (HLH) protein family. The Id protein functions by binding to specific transcription factors and preventing their dimerization and DNA binding (1-3). Id2 interacts with a wide variety of transcription factors including E proteins (5), TCS (4), Pax (6) and the tumor suppressor Rb (1). Id2 has been shown to be important in regulating cellular differentiation, proliferation, development and tumorgenesis (7-9). In tumor cells, increased levels of Id2 functionally inactivate Rb, leading to cellular transformation and cancer (10, 11). Id2 is therefore a promising therapeutic target for treatment of cancer (12).
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. Restricts the CLOCK and ARNTL/BMAL1 localization to the cytoplasm. Plays a role in both the input and output pathways of the circadian clock: in the input component, is involved in modulating the magnitude of photic entrainment and in the output component, contributes to the regulation of a variety of liver clock-controlled genes involved in lipid metabolism.
Subunit Structure: Heterodimer with other HLH proteins. Interacts with GATA4, IFI204 and NKX2-5 (By similarity). Interacts with NR0B2. Interacts with CLOCK and ARNTL/BMAL1.
Similarity: The bHLH domain is essential for its repressor activity towards the CLOCK-ARNTL/BMAL1 heterodimer