Human Phospho-CREB (S133) Antibody

Catalog #: MAB6906 4 Reviews Datasheet

Catalog #	Availability	Size / Price	Qty
MAB6906
MAB6906-SP

Detection of Human Phospho-CREB (S133) by Western Blot.

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Human Phospho-CREB (S133) Antibody Summary

Species Reactivity

Human

Specificity

Detects human CREB when phosphorylated at S133.

Source

Monoclonal Mouse IgG_2A Clone # 702710

Purification

Protein A or G purified from hybridoma culture supernatant

Immunogen

Phosphopeptide containing the human CREB S133 site

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Label

Unconjugated

Applications

Recommended Concentration

Sample

Western Blot

0.5 µg/mL

See below

Immunocytochemistry

8-25 µg/mL

See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot

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Detection of Human Phospho-CREB (S133) by Western Blot. Western blot shows lysates of HeLa human cervical epithelial carcinoma cell line and HEK293 human embryonic kidney cell line untreated (-) or treated (+) with 20 mJ/cm²ultraviolet light (UV) with a 30 minute recovery. PVDF membrane was probed with 0.5 µg/mL of Mouse Anti-Human Phospho-CREB (S133) Monoclonal Antibody (Catalog # MAB6906) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007). A specific band was detected for Phospho-CREB (S133) at approximately 45 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Immunocytochemistry

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Phospho-CREB (S133) in HeLa Human Cell Line. CREB phosphorylated at A133 was detected in immersion fixed Hela human cervical epithelial carcinoma cells, unstimulated (lower panel) and stimulated (upper panel) with PMA, using Mouse Anti-Human Phospho-CREB (S133) Monoclonal Antibody (Catalog # MAB6906) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI (blue). Specific staining was localized to nuclei. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.

Preparation and Storage

Reconstitution

Sterile PBS to a final concentration of 0.5 mg/mL.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

Stability & Storage

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: CREB

The cAMP response element binding protein (CREB) belongs to the bZIP superfamily of transcription factors, containing a basic domain that mediates DNA binding and a leucine zipper domain that facilitates dimerization. Within the promoter of target genes, CREB dimers bind cAMP response elements, defined by the palindromic consensus sequence TGACGTCA. When phosphorylated at Ser133, CREB also binds the coactivator CREB binding protein (CBP), which enhances transcription by acetylating histones to facilitate chromatin unraveling.

Long Name

cAMP Response Element-binding Protein

Entrez Gene IDs

1385 (Human); 12912 (Mouse)

Alternate Names

active transcription factor CREB; cAMP responsive element binding protein 1; cAMP-response element-binding protein-1; cAMP-responsive element-binding protein 1; CREB; CREB1; CREB-1; cyclic AMP-responsive element-binding protein 1; MGC9284; transactivator protein