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PathScan^® Phospho-FRA1 (Ser265) Sandwich ELISA Kit

PathScan^® Phospho-FRA1 (Ser265) Sandwich ELISA Kit #11975

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Product Specifications

REACTIVITY

Application Key:

ELISA+-ELISA and/or ELISA-like Assays

Species Cross-Reactivity Key:

H-Human

Product Information

Product Description

The PathScan^® Phospho-FRA1 (Ser265) Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of FRA1 when phosphorylated at Ser265. A Phospho-FRA1 (Ser265) Rabbit mAb has been coated onto the microwells. After incubation with cell lysates, phosphorylated FRA1 protein is captured by the coated antibody. Following extensive washing, a biotinylated FRA1 Rabbit Detection mAb is added to detect the captured phospho-FRA1 (Ser265) protein. HRP-linked streptavidin is then used to recognize the bound detection antibody. HRP substrate, TMB, is added to develop color. The magnitude of the absorbance for the developed color is proportional to the quantity of FRA1 phosphorylated at Ser265.
Antibodies in kit are custom formulations specific to kit.

Protocol

Specificity / Sensitivity

PathScan^® Phospho-FRA1 (Ser265) Sandwich ELISA Kit recognizes endogenous levels of FRA1 protein when phosphorylated at Ser265, as shown in Figure 1. This kit sensitivity is shown in Figure 2. This kit detects proteins from the indicated species, as determined through in-house testing, but may also detect homologous proteins from other species.

Species Reactivity:

Human

Background

The Fos family of nuclear oncogenes includes c-Fos, FosB, Fos-related antigen 1 (FRA1), and Fos-related antigen 2 (FRA2) (1). While most Fos proteins exist as a single isoform, the FosB protein exists as two isoforms: full-length FosB and a shorter form, FosB2 (Delta FosB), which lacks the carboxy-terminal 101 amino acids (1-3). The expression of Fos proteins is rapidly and transiently induced by a variety of extracellular stimuli, including growth factors, cytokines, neurotransmitters, polypeptide hormones, and stress. Fos proteins dimerize with Jun proteins (c-Jun, JunB, and JunD) to form Activator Protein-1 (AP-1), a transcription factor that binds to TRE/AP-1 elements and activates transcription. Fos and Jun proteins contain the leucine-zipper motif that mediates dimerization and an adjacent basic domain that binds to DNA. The various Fos/Jun heterodimers differ in their ability to transactivate AP-1 dependent genes. In addition to increased expression, phosphorylation of Fos proteins by Erk kinases in response to extracellular stimuli may further increase transcriptional activity (4-6). Phosphorylation of c-Fos at Ser32 and Thr232 by Erk5 increases protein stability and nuclear localization (5). Phosphorylation of FRA1 at Ser252 and Ser265 by Erk1/2 increases protein stability and leads to overexpression of FRA1 in cancer cells (6). Following growth factor stimulation, expression of FosB and c-Fos in quiescent fibroblasts is immediate, but very short-lived, with protein levels dissipating after several hours (7). FRA1 and FRA2 expression persists longer, and appreciable levels can be detected in asynchronously growing cells (8). Deregulated expression of c-Fos, FosB, or FRA2 can result in neoplastic cellular transformation; however, Delta FosB lacks the ability to transform cells (2,3).

Alternate Names

FOS like 1, AP-1 trancription factor subunit; FOS like 1, AP-1 transcription factor subunit; FOS-like antigen 1; FOS-like antigen-1; Fos-related antigen 1; FOSL1; FRA; FRA-1; FRA1

Database Links

UniProt ID: P15407

Entrez-Gene Id: 8061

Limited Uses

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Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

For Research Use Only. Not for Use in Diagnostic Procedures.

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PathScan is a registered trademark of Cell Signaling Technology, Inc.

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PathScan® Phospho-FRA1 (Ser265) Sandwich ELISA Kit #11975