Product Name:
CREB-pS133
Product Number:
ab-pn553
Target Full Name: cAMP-response element-binding protein 1
Target Alias: CAMP responsive element binding protein 1; CAMP-response element binding protein; CREB1; CREB-1
Product Type Specific: CREB1 phosphosite-specific antibody
Antibody Code: PN553
Antibody Target Type: Phosphosite-specific
Antibody Phosphosite: S133
Protein UniProt: P16220
Protein SigNET: CREB
Antibody Type: Polyclonal
Antibody Host Species: Rabbit
Antibody Immunogen Source: Human CREB1 sequence peptide Cat. No.: PE-04ARE90
Antibody Immunogen Sequence: RRP(pS)YRK(bA)C
Antibody Immunogen Description: Corresponds to amino acid residues R130 to K136; in the PKID domain.S133 phosphorylation stimulates transcriptional activity and induces interactions with CBP, DNA, MEIS1, Myb, Nur77, RGS13, SOX9 and p300. This is one of the major in vivo phosphorylation sites in CREB1 (≥65 reports from high throughput mass spectrometry studies recorded in PhosphoSitePlus). CREB1 is known to be phosphorylated at this site in vitro by Akt1 (PKBa), Btk, CaMK1a, CaMK2a, CaMK4, DYRK3, MAPKAPK2, MSK1 (RPS6KA5), MSK2 (RPS6KA4), PKACa (PRKACA), PKCa (PRKCA), PKCe (PRKCE), PKD1 (PRKCM, PRKD1), RSK1 (RPS6KA1), RSK2 (RPS6KA3), RSK3 (RPS6KA2), SGK1, TSSK4, and VRK1.
Production Method: The immunizing peptide was produced by solid phase synthesis on a multipep peptide synthesizer and purified by reverse-phase hplc chromatography. Purity was assessed by analytical hplc and the amino acid sequence confirmed by mass spectrometry analysis. This peptide was coupled to KLH prior to immunization into rabbits. New Zealand White rabbits were subcutaneously injected with KLH-coupled immunizing peptide every 4 weeks for 4 months. The sera from these animals was applied onto an agarose column to which the immunogen peptide was thio-linked. Antibody was eluted from the column with 0.1 M glycine, pH 2.5. Subsequently, the antibody solution was neutralized to pH 7.0 with saturated Tris.This antibody was also subject to negative purification over phosphotyrosine-agarose.
Antibody Modification: Unconjugated. Contact KInexus if you are interest in having the antibody biotinylated or coupled with fluorescent dyes.
Antibody Concentration: 0.5 mg/ml
Storage Buffer: Phosphate buffered saline pH 7.4, 0.05% Thimerasol
Storage Conditions: For long term storage, keep frozen at -40°C or lower. Stock solution can be kept at +4°C for more than 3 months. Avoid repeated freeze-thaw cycles.
Product Use: Western blotting | Antibody microarray
Antibody Dilution Recommended: 2 µg/ml for immunoblotting
Antibody Potency: Weak immunoreactivity of a target-sized protein by Western blotting in A431, HeLa and MCF7 cells.
Antibody Species Reactivity: This antibody detects the target phosphoprotein in the following species due to conservation of amino acid sequence: Human | Chimpanzee | Rat | Mouse.
Antibody Positive Control: The observed molecular mass of the processed target protein on SDS-PAGE gels is reported to be around 37-47 kDa.
Antibody Specificity: Very high
Antibody Cross Reactivity: No significant cross-reactive proteins detected in A431, HeLa and MCF7 cells.
Related Product 1: CREB (130-136) pS133 antibody blocking peptide (Cat. No.: PE-04ARE90)
Related Product 2: CREB1 S129+S133 phosphorylation antibody (Cat. No.: AB-PN577)
Scientific Background: CREB1 (cAMP-responsive element-binding protein 1) is a member of the cAMP responsive element binding protein family of transcription factors that are critical mediators of gene expression in response to extracellular signals and are essential regulators of adaptive behavior and long-term memory formation, symaptic plasticity, learning, and neuronal survival. It regulates gluconeogenesis and energy metabolism in the liver. It is also for cell differentiation, particularly in immune responses and melanocytes. CREB1 belongs to the bZIP (basic leucine zipper) family, forming homodimers or heterodimers with related proteins like CREM and ATF1. CREB1 binds to the cAMP-responsive element (CRE) (octameric palindrome (TGACGTCA) to induce gene transcription. CREB also binds to promoters containing activator protein 1 (AP-1) sites to alter target-gene expression. Activation of CREB1 by PKACa (PRKACA), mediated phosphorylation at Ser-133 has been implicated in the survival of mammalian cells. However, Ser-133 can also be phosphorylated in vitro Akt1 (PKBa), Btk, CaMK1a, CaMK2a, CaMK4, DYRK3, MAPKAPK2, MSK1 (RPS6KA5), MSK2 (RPS6KA4), PKCa (PRKCA), PKCe (PRKCE), PKD1 (PRKCM), RSK1 (RPS6KA2), RSK2 (RPS6KA3), RSK3 (RPS6KA1), SGK1, TSSK4, VRK1. Ser-142 and Ser-143 phosphorylation potentially inhibits transcription. Mice lacking CREB in the central nervous system during development show extensive apoptosis of postmitotic neurons. Dysfunction of CREB1 is associated with neurodegenerative diseases (e.g., Alzheimer's) and cognitive decline. CREB1 is also involved in cancer (e.g., melanomas, myeloid leukemias). This description may include information annotated by UniProt and/or Google AI.