Product: Phospho-CREB (Ser142) Antibody
Catalog: AF3188
Description: Rabbit polyclonal antibody to Phospho-CREB (Ser142)
Application: WB IHC IF/ICC
Reactivity: Human, Mouse, Rat
Prediction: Pig, Bovine, Horse, Sheep, Rabbit, Dog, Chicken, Xenopus
Mol.Wt.: 43kDa; 37kD(Calculated).
Uniprot: P16220
RRID: AB_2834620

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Product Info

WB 1:500-1:2000, IHC 1:50-1:200, IF/ICC 1:100-1:500
*The optimal dilutions should be determined by the end user.

WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.

Pig(100%), Bovine(100%), Horse(100%), Sheep(100%), Rabbit(100%), Dog(100%), Chicken(100%), Xenopus(91%)
Phospho-CREB (Ser142) Antibody detects endogenous levels of CREB only when phosphorylated at Serine 142.
Cite Format: Affinity Biosciences Cat# AF3188, RRID:AB_2834620.
The antibody is from purified rabbit serum by affinity purification via sequential chromatography on phospho-peptide and non-phospho-peptide affinity columns.
Rabbit IgG in phosphate buffered saline , pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol. Store at -20 °C. Stable for 12 months from date of receipt.


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; OTTHUMP00000206667; Transactivator protein;


This gene encodes a transcription factor that is a member of the leucine zipper family of DNA binding proteins. This protein binds as a homodimer to the cAMP-responsive element, an octameric palindrome.



Score>80(red) has high confidence and is suggested to be used for WB detection. *The prediction model is mainly based on the alignment of immunogen sequences, the results are for reference only, not as the basis of quality assurance.

Model Confidence:
High(score>80) Medium(80>score>50) Low(score<50) No confidence

PTMs - P16220 As Substrate

Site PTM Type Enzyme
S40 Phosphorylation
S80 Phosphorylation
S98 Phosphorylation Q15139 (PRKD1)
T100 Phosphorylation Q13315 (ATM)
S108 Phosphorylation P68400 (CSNK2A1) , P48729 (CSNK1A1)
S111 Phosphorylation P68400 (CSNK2A1) , P48729 (CSNK1A1) , Q13315 (ATM)
S114 Phosphorylation P48729 (CSNK1A1)
S117 Phosphorylation
T119 Phosphorylation
S121 Phosphorylation Q13535 (ATR) , Q13315 (ATM)
S129 Phosphorylation P49841 (GSK3B)
S133 Phosphorylation Q16539 (MAPK14) , P31751 (AKT2) , Q02156 (PRKCE) , O43781 (DYRK3) , Q96NX5 (CAMK1G) , Q16566 (CAMK4) , P17612 (PRKACA) , Q6SA08 (TSSK4) , Q99986 (VRK1) , Q13557 (CAMK2D) , Q15418 (RPS6KA1) , O75676 (RPS6KA4) , P28482 (MAPK1) , Q14012 (CAMK1) , Q06187 (BTK) , P51812 (RPS6KA3) , Q13627 (DYRK1A) , O75582 (RPS6KA5) , P41279 (MAP3K8) , O00141 (SGK1) , P27361 (MAPK3) , P31749 (AKT1) , Q13315 (ATM) , Q15349 (RPS6KA2) , Q9Y243 (AKT3) , P49137 (MAPKAPK2) , Q15139 (PRKD1)
Y134 Phosphorylation
K136 Acetylation
K136 Ubiquitination
S142 Phosphorylation Q9UQM7 (CAMK2A) , Q13557 (CAMK2D)
S143 Phosphorylation
S156 Phosphorylation P48729 (CSNK1A1)
T256 Phosphorylation
S270 Phosphorylation P06493 (CDK1)
S271 Phosphorylation Q9H2X6 (HIPK2) , P06493 (CDK1)
K285 Sumoylation
K304 Sumoylation
K309 Ubiquitination
R314 Methylation
K323 Ubiquitination
K330 Ubiquitination
K333 Ubiquitination
K339 Ubiquitination
S340 Phosphorylation

Research Backgrounds


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. Transcription activation is enhanced by the TORC coactivators which act independently of Ser-133 phosphorylation. Involved in different cellular processes including the synchronization of circadian rhythmicity and the differentiation of adipose cells.


Stimulated by phosphorylation. Phosphorylation of both Ser-133 and Ser-142 in the SCN regulates the activity of CREB and participates in circadian rhythm generation. Phosphorylation of Ser-133 allows CREBBP binding. In liver, phosphorylation is induced by fasting or glucagon in a circadian fashion (By similarity). CREBL2 positively regulates phosphorylation at Ser-133 thereby stimulating CREB1 transcriptional activity (By similarity). Phosphorylated upon calcium influx by CaMK4 and CaMK2 on Ser-133. CaMK4 is much more potent than CaMK2 in activating CREB. Phosphorylated by CaMK2 on Ser-142. Phosphorylation of Ser-142 blocks CREB-mediated transcription even when Ser-133 is phosphorylated. Phosphorylated by CaMK1 (By similarity). Phosphorylation of Ser-271 by HIPK2 in response to genotoxic stress promotes CREB1 activity, facilitating the recruitment of the coactivator CBP. Phosphorylated at Ser-133 by RPS6KA3, RPS6KA4 and RPS6KA5 in response to mitogenic or stress stimuli. Phosphorylated by TSSK4 on Ser-133.

Sumoylated with SUMO1. Sumoylation on Lys-304, but not on Lys-285, is required for nuclear localization of this protein. Sumoylation is enhanced under hypoxia, promoting nuclear localization and stabilization.

Subcellular Location:


Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionSubcellular location
Subunit Structure:

Interacts with PPRC1. Binds DNA as a dimer. This dimer is stabilized by magnesium ions. Interacts, through the bZIP domain, with the coactivators TORC1/CRTC1, TORC2/CRTC2 and TORC3/CRTC3. When phosphorylated on Ser-133, binds CREBBP (By similarity). Interacts with CREBL2; regulates CREB1 phosphorylation, stability and transcriptional activity (By similarity). Interacts (phosphorylated form) with TOX3. Interacts with ARRB1. Binds to HIPK2. Interacts with SGK1. Interacts with TSSK4; this interaction facilitates phosphorylation on Ser-133. Forms a complex with KMT2A and CREBBP.

(Microbial infection) Interacts with hepatitis B virus/HBV protein X.

(Microbial infection) Interacts with HTLV-1 protein Tax.


Belongs to the bZIP family.

Research Fields

· Environmental Information Processing > Signal transduction > cGMP-PKG signaling pathway.   (View pathway)

· Environmental Information Processing > Signal transduction > cAMP signaling pathway.   (View pathway)

· Environmental Information Processing > Signal transduction > PI3K-Akt signaling pathway.   (View pathway)

· Environmental Information Processing > Signal transduction > AMPK signaling pathway.   (View pathway)

· Environmental Information Processing > Signal transduction > TNF signaling pathway.   (View pathway)

· Human Diseases > Endocrine and metabolic diseases > Insulin resistance.

· Human Diseases > Neurodegenerative diseases > Huntington's disease.

· Human Diseases > Substance dependence > Cocaine addiction.

· Human Diseases > Substance dependence > Amphetamine addiction.

· Human Diseases > Substance dependence > Alcoholism.

· Human Diseases > Infectious diseases: Bacterial > Tuberculosis.

· Human Diseases > Infectious diseases: Viral > Hepatitis B.

· Human Diseases > Infectious diseases: Viral > Human papillomavirus infection.

· Human Diseases > Infectious diseases: Viral > HTLV-I infection.

· Human Diseases > Cancers: Overview > Viral carcinogenesis.

· Human Diseases > Cancers: Specific types > Prostate cancer.   (View pathway)

· Organismal Systems > Aging > Longevity regulating pathway.   (View pathway)

· Organismal Systems > Circulatory system > Adrenergic signaling in cardiomyocytes.   (View pathway)

· Organismal Systems > Development > Osteoclast differentiation.   (View pathway)

· Organismal Systems > Immune system > Antigen processing and presentation.   (View pathway)

· Organismal Systems > Environmental adaptation > Circadian rhythm.   (View pathway)

· Organismal Systems > Environmental adaptation > Circadian entrainment.

· Organismal Systems > Nervous system > Cholinergic synapse.

· Organismal Systems > Nervous system > Dopaminergic synapse.

· Organismal Systems > Endocrine system > Insulin secretion.   (View pathway)

· Organismal Systems > Endocrine system > Estrogen signaling pathway.   (View pathway)

· Organismal Systems > Endocrine system > Melanogenesis.

· Organismal Systems > Endocrine system > Thyroid hormone synthesis.

· Organismal Systems > Endocrine system > Glucagon signaling pathway.

· Organismal Systems > Endocrine system > Renin secretion.

· Organismal Systems > Endocrine system > Aldosterone synthesis and secretion.

· Organismal Systems > Endocrine system > Relaxin signaling pathway.

· Organismal Systems > Excretory system > Vasopressin-regulated water reabsorption.


1). CREB1 regulates glucose transport of glioma cell line U87 by targeting GLUT1. MOLECULAR AND CELLULAR BIOCHEMISTRY, 2017 (PubMed: 28646353) [IF=4.3]

Application: WB    Species: human    Sample:

Application: IHC    Species: human    Sample:

Fig. 1 The expression of the CREB1, pCREB1, and GLUT1 in normal brain tissue and glioma.

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