14-3-3 sigma, untagged human, recombinant, expressed in E. coli, >=70% (SDS-PAGE), buffered aqueous

14-3-3 sigma, untagged human, recombinant, expressed in E. coli, >=70% (SDS-PAGE), buffered aqueous

Stock Code: 3593411
Manufacturer Part No: SRP5160-50UG
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General description

14-3-3σ or stratifin is a protein that is strongly induced by gamma irradiation and other DNA-damaging agents. The induction of 14-3-3σ is mediated by a p53 responsive element. Exogenous introduction of 14-3-3σ into cycling cells results in a G2 cell cycle arrest. Knockout of 14-3-3σ in cells showed that the cells are unable to maintain cell cycle arrest after DNA damage. The 14-3-3σ -/- cells die as they enter mitosis. This process is associated with a failure of the 14-3-3σ-deficient cells to sequester the proteins that initiate mitosis and prevent them from entering the nucleus. Thus, 14-3-3σ plays an important role in maintaining the G2 checkpoint in cells and preventing mitotic death.

Physical form

Supplied in 50mM Tris-HCl, pH 7.5, 50mM NaCl, 0.25mM DTT, 0.1mM PMSF, 25% glycerol.

Preparation Note

after opening, aliquot into smaller quantities and store at -70 °C. Avoid repeating handling and multiple freeze/thaw cycles

ManufacturerSIGMA-ALDRICH
Formbuffered aqueous glycerol solution
Assay≥70% (SDS-PAGE)

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