Recombinant Human Cyclic AMP-responsive element-binding protein 3 (CREB3), Truncated

Uniprot Id

O43889

Target Species

Human

Target Name

CREB3

Target Full Name

Cyclic AMP-responsive element-binding protein 3

Target Function

Endoplasmic reticulum (ER)-bound sequence-specific transcription factor that directly binds DNA and activates transcription. Plays a role in the unfolded protein response (UPR), promoting cell survival versus ER stress-induced apoptotic cell death. Also involved in cell proliferation, migration and differentiation, tumor suppression and inflammatory gene expression. Acts as a positive regulator of LKN-1/CCL15-induced chemotaxis signaling of leukocyte cell migration. Associates with chromatin to the HERPUD1 promoter. Also induces transcriptional activation of chemokine receptors.; This is the transcriptionally active form that translocates to the nucleus and activates unfolded protein response (UPR) target genes during endoplasmic reticulum (ER) stress response. Binds the cAMP response element (CRE) (consensus: 5'-GTGACGTFunctions 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). Also decreases the acetylation level of histone H4. Does not promote the chemotactic activity of leukocyte cells.; (Microbial infection) Plays a role in human immunodeficiency virus type 1 (HIV-1) virus protein expression.; (Microbial infection) Plays a role in herpes simplex virus-1 (HSV-1) latent infection and reactivation from latency. Represses the VP16-mediated transactivation of immediate early genes of the HSV-1 virus by sequestering host cell factor-1 HCFC1 in the ER membrane of sensory neurons, thereby preventing the initiation of the replicative cascade leading to latent infection.; (Microbial infection) May play a role as a cellular tumor suppressor that is targeted by the hepatitis C virus (HCV) core protein.; (Microbial infection) Activates transcription of genes required for reactivation of the latent HSV-1 virus. It's transcriptional activity is inhibited by CREBZF in a HCFC1-dependent manner, by the viral transactivator protein VP16. Binds DNA to the cAMP response element (CRE) (consensus: 5'-GTGACGT(Microbial infection) It's transcriptional activity is inhibited by CREBZF in a HCFC1-dependent manner, by the viral transactivator HCV core protein.

Target Subcellular Location

[Isoform 1]: Endoplasmic reticulum membrane; Single-pass type II membrane protein. Golgi apparatus.; [Isoform 2]: Nucleus. Cytoplasm.; [Processed cyclic AMP-responsive element-binding protein 3]: Nucleus.; [Isoform 1]: Cytoplasm.

Target Protein Families

BZIP family, ATF subfamily

Target Tissue Specificity

Ubiquitously expressed. Expressed in dendritic cells (DC). Weakly expressed in monocytes (at protein level).

Target Synonyms

CREB3; LZIP; Cyclic AMP-responsive element-binding protein 3; CREB-3; cAMP-responsive element-binding protein 3; Leucine zipper protein; Luman; Transcription factor LZIP-alpha

Target Background

This gene encodes a transcription factor that is a member of the leucine zipper family of DNA binding proteins. This protein binds to the cAMP-response element and regulates cell proliferation. The protein interacts with host cell factor C1, which also associates with the herpes simplex virus (HSV) protein VP16 that induces transcription of HSV immediate-early genes. This protein and VP16 both bind to the same site on host cell factor C1. It is thought that the interaction between this protein and host cell factor C1 plays a role in the establishment of latency during HSV infection. This protein also plays a role in leukocyte migration, tumor suppression, and endoplasmic reticulum stress-associated protein degradation. Additional transcript variants have been identified, but their biological validity has not been determined.