CREB3 Antibody – Rabbit Polyclonal

CREB3: Endoplasmic reticulum (ER)-bound transcription factor that plays a role in the unfolded protein response (UPR). Involved in cell proliferation and migration, tumor suppression and inflammatory gene expression. Plays also a role in the human immunodeficiency virus type 1 (HIV-1) virus protein expression and in the herpes simplex virus-1 (HSV-1) latent infection and reactivation from latency. Isoform 2 plays a role in the unfolded protein response (UPR). Isoform 2 acts as a positive regulator of LKN-1/CCL15-induced chemotaxis signaling of leukocyte cell migration. Isoform 2 may play a role as a cellular tumor suppressor that is targeted by the hepatitis C virus (HSV) core protein. Isoform 2 represses the VP16-mediated transactivation of immediate early genes of the HSV-1 virus by sequestring host cell factor-1 HCFC1 in the ER membrane of sensory neurons, thereby preventing the initiation of the replicative cascade leading to latent infection. Isoform 3 functions as a negative transcriptional regulator in ligand-induced transcriptional activation of the glucocorticoid receptor NR3C1 by recruiting and activating histone deacetylases (HDAC1, HDAC2 and HDAC6). Isoform 3 decreases the acetylation level of histone H4. Isoform 3 does not promote the chemotactic activity of leukocyte cells. Belongs to the bZIP family. ATF subfamily. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Transcription factor; Membrane protein, integral

Chromosomal Location of Human Ortholog: 9p13.3

Cellular Component: Golgi membrane; Golgi apparatus; nuclear body; endoplasmic reticulum membrane; membrane; cell soma; endoplasmic reticulum; cytoplasm; integral to membrane; integral to endoplasmic reticulum membrane; cytosol; nucleus

Molecular Function: protein dimerization activity; CCR1 chemokine receptor binding; protein binding; protein homodimerization activity; DNA binding; cAMP response element binding protein binding; chromatin binding; transcription factor activity

Biological Process: transcription from RNA polymerase II promoter; cytoplasmic sequestering of transcription factor; viral reproduction; transcription, DNA-dependent; positive regulation of transcription, DNA-dependent; positive regulation of transcription of target genes involved in unfolded protein response; establishment of viral latency; chemotaxis; induction of positive chemotaxis; negative regulation of cell cycle; regulation of cell proliferation; reactivation of latent virus; positive regulation of transcription from RNA polymerase II promoter; regulation of cell growth; positive regulation of calcium ion transport; positive regulation of defense response to virus by host; positive regulation of cell migration