Total CREB Transcription Factor Assay Kit (Colorimetric) (ab207201)
Key features and details
- Assay type: Semi-quantitative
- Detection method: Colorimetric
- Platform: Microplate reader
- Assay time: 3 hr 30 min
- Sample type: Nuclear Extracts
- Sensitivity: 500 ng/well
Properties
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Storage instructions
Please refer to protocols. -
Components 1 x 96 tests 5 x 96 tests 10X Antibody Binding Buffer 1 x 2.2ml 1 x 11ml 10X Wash Buffer 1 x 22ml 1 x 110ml 96-well CREB assay plate 1 unit 5 units Anti-mouse HRP-conjugated IgG 1 x 11µl 1 x 55µl Binding Buffer 1 x 10ml 1 x 50ml CREB antibody 1 x 10µl 1 x 50µl Developing Solution 1 x 11ml 1 x 55ml Dithiothreitol (DTT) (1 M) 1 x 100µl 1 x 500µl Herring sperm DNA (1 μg/μL) 1 x 100µl 1 x 500µl Lysis Buffer 1 x 10ml 1 x 50ml ATF-2 Mutated oligonucleotide (10 pmol/µL) 1 x 100µl 1 x 500µl Plate sealer 1 unit 5 units Protease Inhibitor Cocktail 1 x 100µl 1 x 500µl Stop Solution 1 x 11ml 1 x 55ml WI-38 (Forskolin) nuclear extract (2.5 µg/µL) 1 x 40µl 1 x 200µl ATF-2 Wild-type oligonucleotide (10 pmol/µL) 1 x 100µl 1 x 500µl -
Research areas
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Function
This protein binds the cAMP response element (CRE), a sequence present in many viral and cellular promoters. CREB stimulates transcription on binding to the CRE. Transcription activation is enhanced by the TORC coactivators which act independently of Ser-133 phosphorylation. Implicated in synchronization of circadian rhythmicity. -
Involvement in disease
Defects in CREB1 may be a cause of angiomatoid fibrous histiocytoma (AFH) [MIM:612160]. A distinct variant of malignant fibrous histiocytoma that typically occurs in children and adolescents and is manifest by nodular subcutaneous growth. Characteristic microscopic features include lobulated sheets of histiocyte-like cells intimately associated with areas of hemorrhage and cystic pseudovascular spaces, as well as a striking cuffing of inflammatory cells, mimicking a lymph node metastasis. Note=A chromosomal aberration involving CREB1 is found in a patient with angiomatoid fibrous histiocytoma. Translocation t(2;22)(q33;q12) with CREB1 generates a EWSR1/CREB1 fusion gene that is most common genetic abnormality in this tumor type. -
Sequence similarities
Belongs to the bZIP family.
Contains 1 bZIP domain.
Contains 1 KID (kinase-inducible) domain. -
Post-translational
modificationsStimulated 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 (By similarity). Phosphorylated upon DNA damage, probably by ATM or ATR.
Sumoylated by 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. -
Cellular localization
Nucleus. - Information by UniProt
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Alternative names
- Active transcription factor CREB
- cAMP response element binding protein
- cAMP response element binding protein 1
see all -
Database links
- Entrez Gene: 1385 Human
- Entrez Gene: 12912 Mouse
- Entrez Gene: 81646 Rat
- Omim: 123810 Human
- SwissProt: P16220 Human
- SwissProt: Q01147 Mouse
- SwissProt: P15337 Rat
- Unigene: 516646 Human
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Images
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Nuclear extracts from WI-38 cells (Gray) and WI-38 cells. Stimulated with Forskolin (Black) were assayed from 0.625 - 10µg/well for CREB activation using the Total CREB Transcription Factor Assay Kit
Nuclear extracts from WI-38 cells (grey) and WI-38 cells stimulated with Forskolin (black) were tested for CREB activation. These results are provided for demonstration purposes only.
