- Catalog number
- PA1797-Dylight594
- Size / count
- 100 µg
- Dry ice
- No
- Hazardous
- No
- Discontinued
- Yes
- Background
- Stratifin (SFN), also known as 14-3-3 protein sigma, is strongly induced by gamma irradiation and other DNA-damaging agents. The induction of 14-3-3-sigma is mediated by a p53 -responsive element located 1.8 kb upstream of its transcription start site. Leffers et al. (1993)obtained peptide sequence and subsequently cloned a T-cell cDNA of the 14-3-3 family of conserved proteins. The protein, called stratifin, was shown to be diffusely distributed in the cytoplasm and was present in cultured epithelial cells. It was most abundant in tissues enriched in stratified keratinizing epithelium.
- Synonyms
- 14-3-3 protein sigma;Epithelial cell marker protein 1;Stratifin;SFN;HME1;
- Gene Name
- 14-3-3 protein sigma
- UniProt
- P31947
- Host
- Rabbit
- Reactivity
- Human,Mouse,Rat
- Cross Reactivity
- No cross-reactivity with other proteins
- Immunogen
- A synthetic peptide corresponding to a sequence in the middle region of human 14-3-3 sigma, identical to the related rat and mouse sequences.
- Clonality
- Polyclonal
- Tissue Specificity
- Present mainly in tissues enriched in stratified squamous keratinizing epithelium.
- Applications
- Flow Cytometry,IF,IHC,ICC,WB
- Purification
- Immunogen affinity purified.
- Concentration
- Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.
- Form
- Lyophilized
- Reconstitution
- Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
- Function
- Adapter protein implicated in the regulation of a large spectrum of both general and specialized signaling pathways. Binds to a large number of partners, usually by recognition of a phosphoserine or phosphothreonine motif. Binding generally results in the modulation of the activity of the binding partner. When bound to KRT17, regulates protein synthesis and epithelial cell growth by stimulating Akt/mTOR pathway. May also regulate MDM2 autoubiquitination and degradation and thereby activate p53/TP53. .
- Components
- Each vial contains 4mg Trehalose, 0.9mg NaCl and 0.2mg Na2HPO4.
- References & Citations
- 1. Leffers, H., Madsen, P., Rasmussen, H. H., Honore, B., Andersen, A. H., Walbum, E., Vandekerckhove, J., Celis, J. E.Molecular cloning and expression of the transformation sensitive epithelial marker stratifin: a member of a protein family that has been involved in the protein kinase C signalling pathway.J. Molec. Biol. 231: 982-998, 1993.
2. Urano, T., Saito, T., Tsukui, T., Fujita, M., Hosoi, T., Muramatsu, M., Ouchi, Y., Inoue, S. Efp targets 14-3-3-sigma for proteolysis and promotes breast tumour growth.Nature 417: 871-875, 2002.
3. Wilker, E. W., van Vugt, M. A. T. M., Artim, S. A., Huang, P. H., Petersen, C. P., Reinhardt, H. C., Feng, Y., Sharp, P. A., Sonenberg, N., White, F. M., Yaffe, M. B.14-3-3-sigma controls mitotic translation to facilitate cytokinesis.Nature 446: 329-332, 2007.
- Storage Conditions
- Store at -20℃ for one year from date of receipt. After reconstitution, at 4℃ for one month. It can also be aliquotted and stored frozen at -20℃ for six months. Avoid repeated freeze-thaw cycles.
- Calculated Molecular Weight
- 27774 MW
- Observed Molecular Weight
- 28 kDa
- Fragment
- Rabbit IgG
- Specificity
- No cross reactivity with other proteins.
- Applications Notes
- Western blot, 0.1-0.5μg/ml, Human, Mouse, Rat<br>
Immunohistochemistry (Paraffin-embedded Section), 0.5-1μg/ml, Human, By Heat<br>
Immunocytochemistry , 0.5-1μg/ml, Human<br>
Immunocytochemistry/Immunofluorescence, 2μg/ml, Human<br>
Flow Cytometry (Fixed), 1-3μg/1x10<sup>6</sup> cells, Human
- Subcellular Location
- Cytoplasm. Nucleus . Secreted. May be secreted by a non-classical secretory pathway.
- Protein Name
- 14-3-3 protein sigma