Other NamesbHLHb24 antibody Class B basic helix-loop-helix protein 24 antibody dJ857M17.1.2 (inhibitor of DNA binding 1, dominant negative helix-loop-helix protein) antibody DNA binding protein inhibitor ID 1 antibody DNA binding protein inhibitor ID1 antibody DNA-binding protein inhibitor ID-1 antibody Dominant negative helix loop helix protein antibody ID 1 antibody ID antibody ID1 antibody ID1_HUMAN antibody Inhibitor of Differentiation 1 antibody Inhibitor of DNA binding 1 antibody inhibitor of DNA binding 1, dominant negative helix-loop-helix protein antibody
Western blot analysis of Id1 on 293T cell using anti-Id1 antibody at 1/1,000 dilution.
Immunohistochemical analysis of paraffin-embedded human tonsil tissue using anti-Id1 antibody. Counter stained with hematoxylin.
Immunohistochemical analysis of paraffin-embedded human liver tissue using anti-Id1 antibody. Counter stained with hematoxylin.
Immunohistochemical analysis of paraffin-embedded human colon tissue using anti-Id1 antibody. Counter stained with hematoxylin.
Immunohistochemical analysis of paraffin-embedded human placenta tissue using anti-Id1 antibody. Counter stained with hematoxylin.
ICC staining Id1 in A549 cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.
ICC staining Id1 in Hela cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.
ICC staining Id1 in HepG2 cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.
Flow cytometric analysis of HepG2 cells with Id1 antibody at 1/100 dilution (red) compared with an unlabelled control (cells without incubation with primary antibody; black).
Members of the Id family of basic helix-loop-helix (bHLH) proteins include Id1, Id2, Id3 and Id4. They are ubiquitously expressed and dimerize with members of the class A and B HLH proteins. Due to the absence of the basic region, the resulting heterodimers cannot bind DNA. The Id-type proteins thus appear to negatively regulate DNA binding of bHLH proteins. Since Id1 inhibits DNA binding of E12 and Myo D, it apparently functions to inhibit muscle-specific gene expression. Under conditions that facilitate muscle cell differentiation, the Id protein levels fall, allowing E12 and/or E47 to form heterodimers with Myo D and myogenin, which in turn activate myogenic differentiation. It has been shown that expression of each of the Id proteins is strongly dependent on growth factor activation and that reduction of Id mRNA levels by antisense oligonucleotides leads to a delayed reentry of arrested cells into the cell cycle following growth factor stimulation.
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