Our Anti-CREB (Ser133) rabbit polyclonal phosphospecific primary antibody from PhosphoSolutions is produced in-house. It detects rat CREB (Ser133) and is antigen affinity purified from pooled serum. It is great for use in WB, IHC.
Immunolabeling of a section of mouse piriform cortex labeled with Anti-Phospho-Ser133 CREB (Cat. p1010-133, red, 1:1000). Cell nuclei are visualized with DAPI DNA stain (blue).
It is well known that the control of gene expression involves activation of protein kinase cascades that regulate transcription factors within the nucleus (Karin and Hunter, 1995). The cyclic AMP response element binding protein (CREB) is one of the best characterized stimulus-induced transcription factors (Montminy, 1997). This transcription factor is a component of intracellular signaling events that regulate a wide range of biological functions, from spermatogenesis to circadian rhythms and memory (Shaywitz and Greenberg, 1999; Silva et al., 1998). A variety of protein kinases including protein kinase A (PKA), mitogen-activated protein kinases (MAPKs), and Ca2+/calmodulin-dependent protein kinases (CaMKs) phosphorylate CREB at serine 133 (Ser-133), and phosphorylation of Ser-133 are required for CREB-mediated transcription (Johannessen et al., 2004; Kornhauser et al., 2002).
Antigen Affinity Purified from Pooled Serum
Polyclonal
IgG
ELISA, IHC, WB
Rabbit
CREB1
45 kDa
Synthetic phospho-peptide corresponding to amino acid residues surrounding Ser133 of rat CREB, conjugated to keyhole limpet hemocyanin (KLH).
Storage at -20°C is recommended, as aliquots may be taken without freeze/thawing due to presence of 50% glycerol. Stable for at least 1 year at -20°C.
Liquid
Prepared from pooled rabbit serum by affinity purification via sequential chromatography on phospho and non-phosphopeptide affinity columns.
10 mM HEPES (pH 7.5), 150 mM NaCl, 100 µg per ml BSA and 50% glycerol.
WB: 1:1000
WB Brain: 1:1000
IHC: 1:100-1:1000
Unconjugated
Specific for endogenous levels of the ~45 kDa CREB protein phosphorylated at Ser133. Immunolabeling is completely eliminated by treatment with λ-phosphatase.
Phosphorylated
Ser133
Western blots performed on each lot.
For research use only. Not intended for therapeutic or diagnostic use. Use of all products is subject to our terms and conditions, which can be viewed on our website.
After date of receipt, stable for at least 1 year at -20°C.
Active transcription factor CREB; cAMP response element binding protein 1; cAMP response element binding protein; cAMP responsive element binding protein 1; cAMP-responsive element-binding protein 1; CREB; CREB-1; CREB1; CREB1_HUMAN; Cyclic AMP-responsive element-binding protein 1; MGC9284; OTTHUMP00000163864; OTTHUMP00000163865; OTTHUMP00000206660; OTTHUMP00000206662; TTHUMP00000206667; Transactivator protein
P15337
UniProt Summary: Phosphorylation-dependent transcription factor that stimulates transcription upon binding to the DNA cAMP response element (CRE), a sequence present in many viral and cellular promoters (By similarity). Transcription activation is enhanced by the TORC coactivators which act independently of Ser-119 phosphorylation (PubMed:14536081). Involved in different cellular processes including the synchronization of circadian rhythmicity and the differentiation of adipose cells (By similarity). Regulates the expression of apoptotic and inflammatory response factors in cardiomyocytes in response to ERFE-mediated activation of AKT signaling (By similarity). {ECO:0000250|UniProtKB:P27925, ECO:0000250|UniProtKB:Q01147, ECO:0000269|PubMed:14536081}.
