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YB1 (Y-box Binding Protein 1)

YB1 (Y-box Binding Protein 1)

Cat no: Y1500

Supplier: United States Biological
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The Y-box binding protein 1 (YB1) belongs to a family of evolutionarily conserved, multifunctional Y-box proteins that bind single-stranded DNA and RNA and function as regulators of transcription, RNA metabolism, and protein synthesis (1). YB1 binds to Y-box sequences (TAACC) found in multiple gene promoters and can positively or negatively regulate transcription. YB1 activates genes associated with proliferation and cancer, such as cyclin A, cyclin B1, matrix metalloproteinase-2 (MMP-2), and the multi-drug resistance 1 (MDR1) gene (2-4). YB1 represses genes associated with cell death, including the Fas cell death-associated receptor and the p53 tumor suppressor gene (5-7). It also interacts with the RNA- splicing factor SRp30c and stabilizes interleukin 2 mRNA upon induction of T lymphocytes by interleukin 2 (8,9). The majority of YB1 protein localizes to the cytoplasm, with a minor pool found in the nucleus; however, nuclear localization appears to be critical for its role in promoting proliferation. Applications: Suitable for use in Western Blot, Immunohistochemistry and Immunofluorescence. Other applications not tested. Recommended Dilution: Western Blot: 1:1000. Incubate membrane with diluted antibody in 5% BSA, 1X TBS, 0.1% Tween-20 at 4 degrees C with gentle shaking, overnight. Immunohistochemistry (Paraffin): 1:50 Immunofluorescence (IF-IC) 1:100 Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
Catalogue number: Y1500
Reactivities: Human, Mouse, Rat, Non-Human Primate
Hosts: Rabbit
Applications: Immunofluorescence, Immunohistochemistry, Western Blot
Size: 100ul
Form: Supplied as a liquid in 10mM sodium HEPES pH 7.5, 150mM sodium chloridel, 0.1mg/ml BSA, 50% glycerol.
P type: Pab
Isotype: IgG
Purity: Purified by Protein A and peptide affinity chromatography.
References: 1. Matsumoto, K. and Wolffe, A.P. (1998) Trends Cell Biol. 8, 318-23, 2. Jurchott, K. et al. (2003) J. Biol. Chem. 278, 27988-96, 3. Mertens, P.R. et al. (1997) J. Biol. Chem. 272, 22905-12, 4. Uchiumi, T. et al. (1993) Cell Growth Differ. 4, 147-57, 5. Lasham, A. et al. (2000) Gene 252, 1-13, 6. Lasham, A. et al. (2003) J. Biol. Chem. 278, 35516-23, 7. Homer, C. et al. (2005) Oncogene 24, 8314-25, 8. Raffetseder, U. et al. (2003) J. Biol. Chem. 278, 18241-8, 9. Chen, C.Y. et al. (2000) Genes Dev. 14, 1236-48, 10. Sutherland, B.W. et al. (2005) Oncogene 24, 4281-92.
Additional info: Recognizes endogenous levels of total human YB1. Species crossreactivity: mouse, rat, monkey.

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