Catalog # CX4195

CREB (a.a. 265-277) Peptide

Blocking Peptide

Application / Dilution
ELISA50 ng/well

Size 50 μg



CREB (cyclic AMP response element-binding protein) is a stimulus-induced transcription factor that plays pivotal roles in cell survival and proliferation. CREB is expressed in various tissues, and has important gene-regulating roles in the nervous system. The transactivation function of CREB is primarily regulated through Ser-133 phosphorylation by cAMP-dependent protein kinase A (PKA) and related kinases. CREB is phosphorylated at other sites in response to calcium influx and DNA damage. The DNA-damage responsive nuclear kinase, HIPK2, can phosphorylate Ser-271 but not Ser-133 in CREB, and this phosphorylation activates CREB transactivation function. Mutation of Ser-271 to Glu-271 potentiates the CREB transactivation function. Thus, phosphorylation of Ser-271 may be the mode of activation for CREB-dependent transcription in response to genotoxic stress.



Sakamoto, K. et al. (2010) Mol. Biol. Cell 21:2966.
Lonze, B.E. & Ginty, D.D. (2002) Neuron 35:605.
Gonzalez, G.A. & Montminy, M.R. (1989) Cell. 59(4):675.

CREB synthetic peptide corresponding to amino acids 265 to 277 in human CREB. This sequence is well conserved in rat, mouse, chicken, and zebrafish CREB. The site has some homology to the conserved region in ATF1 and CREM.

*For more information, see UniProt Accession P16220
Blocking peptide is supplied in 50µl phosphate-buffered saline and 0.05% sodium azide.

The products are are safely shipped at ambient temperature for both domestic and international shipments. Each product is guaranteed to match the specifications as indicated on the corresponding technical data sheet. Please store at -20C upon arrival for long term storage.

The peptide is recommended for use in ELISA and antibody-blocking experiments in Western blot and immunocytochemistry applications.

*All molecular weights (MW) are confirmed by comparison to Bio-Rad Rainbow Markers and to western blot mobilities of known proteins with similar MW.

This kit contains: