Cell Signaling Technology

Product Pathways - Neuroscience

PhosphoPlus® CREB (Ser133) Antibody Kit #9190

Kit Includes Quantity Applications Reactivity MW (kDa) Source
CREB (48H2) Rabbit mAb # 9197 100 microliters W IP IHC-P IHC-F IF-F IF-IC F H M R Mk Dr 43 Rabbit
Phospho-CREB (Ser133) (87G3) Rabbit mAb # 9198 100 microliters W IHC-P IHC-F IF-F IF-IC F H M R 43 Rabbit
CREB Control Cell Extracts # 9193 40 microliters
Anti-rabbit IgG, HRP-linked Antibody # 7074 50 microliters Goat
Anti-biotin, HRP-linked Antibody # 7075 100 microliters Goat
20X LumiGLO® Reagent and 20X Peroxide # 7003 5 milliliters
Biotinylated Protein Ladder Detection Pack # 7727 100 microliters

Applications Key:  W=Western Blotting  IP=Immunoprecipitation  IHC-P=Immunohistochemistry (Paraffin)  IHC-F=Immunohistochemistry (Frozen)  IF-F=Immunofluorescence (Frozen)  IF-IC=Immunofluorescence (Immunocytochemistry)  F=Flow Cytometry
Reactivity Key:  H=Human  M=Mouse  R=Rat  Mk=Monkey  Dr=Drosophila

Specificity / Sensitivity

Phospho-CREB (Ser133) (87G3) Rabbit mAb detects endogenous levels of CREB only when phosphorylated at Ser133. This antibody also detects the phosphorylated form of CREB-related protein ATF-1. CREB (48H2) Rabbit mAb detects endogenous levels of total CREB protein.

Western Blotting

Western Blotting

Western blot analysis of extracts from SK-N-MC cells, untreated or forskolin- and FGF-treated, using Phospho-CREB (Ser133) (87G3) Rabbit mAb #9198 (upper) or CREB (48H2) Rabbit mAb #9197 (lower).

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human lung carcinoma using CREB (48H2) Rabbit mAb #9197.

IHC-F (frozen)

IHC-F (frozen)

Immunohistochemical analysis of frozen H1650 xenograft, showing nuclear localization using CREB (48H2) Rabbit mAb #9197.


Flow Cytometry

Flow Cytometry

Flow cytometric analysis of SK-N-MC cells, using CREB (48H2) Rabbit mAb #9197 (blue) compared to a nonspecific negative control antibody (red).

Flow Cytometry

Flow Cytometry

Flow cytometric analysis of SK-N-MC cells, untreated (blue) or IBMX- and forskolin-treated (green), using Phospho-CREB (Ser133) (87G3) Rabbit mAb #9198 compared to a nonspecific negative control antibody (red).

IF-F

IF-F

Confocal immunofluorescent analysis of mouse cerebellum labeled with CREB (48H2) Rabbit mAb #9197 (red) and Neurofilament-L (DA2) Mouse mAb #2835 (green). Blue pseudocolor =DRAQ5® (fluorescent DNA dye).


IF-F

IF-F

Conofocal immunofluorescent images of rat dentate gyrus, either sham-operated (left) or 15 min ischemia followed by 30 min (center) and 4 h (right) reperfusion, labeled with Phospho-CREB (Ser133) (87G3) Rabbit mAb #9198 (red), Neurofilament-L (DA2) Mouse mAb #2835 (blue) and Phospho-S6 Ribosomal Protein (Ser235/236) (2F9) Rabbit mAb (Alexa Fluor® 488 Conjugate) #4854.

Source / Purification

Rabbit monoclonal antibodies are produced by immunizing rabbits with a synthetic phospho-peptide (KLH-coupled) corresponding to residues surrounding Ser133 of human CREB (Phospho-CREB (Ser133) (87G3) Rabbit mAb), or with a synthetic peptide (KLH-coupled) corresponding to residues near the carboxy-terminus of human CREB (CREB (48H2) Rabbit mAb).

Background

CREB is a bZIP 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 (1-3). Additionally, CREB signaling is involved in learning and memory in several organisms (4-6). 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 (7-9).

  1. Lonze, B.E. et al. (2002) Neuron 34, 371-385.
  2. Lee, M.M. et al. (1999) J. Neurosci. Res. 55, 702-712.
  3. Redmond, L. et al. (2002) Neuron 34, 999-1010.
  4. Dash, P.K. et al. (1990) Nature 345, 718-721.
  5. Yin, J.C. et al. (1994) Cell 79, 49-58.
  6. Guzowski, J.F. and McGaugh, J.L. (1997) Proc. Nat. Acad. Sci. USA 94, 2693-2698.
  7. Xing, J. et al. (1998) Mol. Cell. Biol. 18, 1946-1955.
  8. Ribar, T.J. et al. (2000) J. Neurosci. 20, RC107.
  9. Tan, Y. et al. (1996) EMBO J. 15, 4629-4642.

Application References

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Companion Products

Rabbit Monoclonals Produced UsingTechnology from Epitomics, Inc. UnderU.S. patent No. 5,675,063.

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