Beclin-1, phosphorylated (Ser15) (Coiled-coil Myosin-like Bcl-2-Interacting Protein)

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£659.00

SKU:: 351769
Application:: WB
Purity:: Purified
Storage Conditions:: -20°C
Supplier:: United States Biological
Host:: Rabbit
Immunogen:: Synthetic peptide corresponding to residues surrounding Ser15 of human Beclin-1.
Format:: Supplied as a liquid in 10mM sodium HEPES, pH 7.5, 150mM sodium chloride, 0.1mg/ml BSA, <0.02% sodium azide, 50% glycerol.
Extra Details:: Autophagy is a catabolic process for the kD autophagosomic-lysosomal degradation of proteins activated in response to nutrient deprivation and in neurodegenerativeconditions (1). One of the proteins critical to this process is Beclin-1, the mammalian orthologue of the yeast autophagy protein Apg6/Vps30 (2). Beclin-1 can complement defects in yeast autophagy caused by loss of Apg6 and can also stimulate autophagy when overexpressed in mammalian cells (3). Mammalian Beclin-1 was originally isolated in a yeast two-hybrid screen for Bcl-2 interacting proteins and has been shown to 40 interact with Bcl-2 and Bcl-xL, but not with Bax or Bak (4). 30 While Beclin-1 is generally ubiquitously expressed, research studies have shown it is monoallelically deleted in 40-75% of sporadic human breast and ovarian cancers (5). Beclin-1 is localized within cytoplasmic structures including the mitochondria, although overexpression of Beclin-1 reveals some nuclear staining and CRM1-dependent nuclear export (6). Investigators have demonstrated that Beclin-1-/- mice die early in embryogenesis and Beclin-1-/+ mice have a high incidence of spontaneous tumors. Stem cells from the null mice demonstrate an altered 200 autophagic response, although responses to apoptosis appeared 140 normal (7). Researchers have also found that overexpression of Beclin-1 in virally infected neurons in vivo resulted in 80 significant protection against Sindbis virus-induced disease and neuronal apoptosis (4). Autophagy inducers, including aa starvation and mTOR inhibition, lead to phosphorylation of mouse Beclin-1 at Ser14 (equivalent to human Ser15) by the serine/threonine kinase ULK1. This results in an increase in VPS34 lipid kinase activity and leads to the induction of autophagy (8). Applications: Suitable for use in Western Blot. Other applications not tested. Recommended Dilution: Western Blot: 1:1000, incubate membrane with diluted primary antibody in 5% BSA, 1X TBS, 0.1% Tween-20 at 4°C with gentle shaking, overnight. Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

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