Anti-phospho-CREB (Ser133) Antibody, clone 634-2

43 kDa

CREB is a β ZIP transcription factor that activates target genes through cAMP response elements. CREB is able to mediate signals from numerous physiological stimuli, resulting in regulation of a broad array of cellular responses. While CREB is expressed in numerous tissues, it plays a large regulatory role in the nervous system. CREB is believed to play a key role in promoting neuronal survival, precursor proliferation, neurite outgrowth and neuronal differentiation in certain neuronal populations. Additionally, CREB signaling is involved in learning and memory in several organisms. CREB is able to selectively activate numerous downstream genes through interactions with different dimerization partners. CREB is activated by phosphorylation at Ser133 by various signaling pathways including Erk, Ca2+ and stress signaling. Some of the kinases involved in phosphorylating CREB at Ser133 are p90RSK, MSK, CaMKIV and MAPKAPK-2.

A proprietary immunogen based on the amino acid sequence containing phospho-serine corresponding to residue 133 of human CREB.

Epitope: Ser133

Use Anti-phospho-CREB (Ser133) Antibody, clone 634-2 (mouse monoclonal antibody) validated in ICC, IF, WB to detect phospho-CREB (Ser133) also known as active transcription factor CREB, cAMP responsive element binding protein 1.

Beadlyte Specificity Assay:
1:500 to 1:32,000 dilutions of this lot detected CREB peptide containing phosphoserine 133. The antibody did NOT recognize the nonphosphorylated peptide of the same sequence

Immunofluorescence / Immunocytochemistry:
This antibody has been reported by an independent laboratory to detect phospho-CREB (Ser133) using immunofluorescence.

Research Category
Epigenetics & Nuclear Function

Research Sub Category
Transcription Factors

Broad species cross-reactivity expected, based on sequence homology.

Phospho-CREB (Ser133).

Format: Purified

Protein G Purified

Purified mouse IgG1κ in buffer containing 0.014 M phosphate buffer, pH 7.6, 0.175 M NaCl, 0.07% sodium azide and 30% glycerol. Liquid at -20ºC.

Stable for 1 year at -20°C from date of receipt. For maximum recovery of product, centrifuge the vial prior to removing the cap.

Control
Human breast carcinoma, forskolin- and FGF-treated SK-N-MC cell extracts.

Routinely evaluated by western blot on RIPA lysates from forskolin treated rat PC-12 and mouse 3T3/A31 cells.

Western Blot Analysis:
A 1:1,000 to 1:4,000 dilution of this lot detected phospho-CREB (Ser 133) in RIPA lysates from forskolin treated rat PC-12 and mouse 3T3/A31 cells (Figure A).

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

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