Anti-Bcl-XL, Biotin conjugated, clone 5K139

Apoptosis, or programmed cell death, is a well-documented phenomenon in many cellular systems. It plays a key role in tissue and organ development as well as in adult tissues during cell turnover. Apoptosis can be induced by a variety of internal and external stimuli including growth factor deprivation, cytokine treatment, antigen-receptor engagement, cell-cell interactions, irradiation and glucocorticoid treatment. Bcl-2 and one of its homologues, Bcl-xL, protect cells from apoptosis3,4, while other homologues of Bcl-2 such as Bax, Bad and Bak have been shown to enhance apoptosis. Bcl-xL has been shown to block apoptosis which is induced by a variety of stimuli and, under certain conditions, offers greater protection against apoptosis than Bcl-2.9-13 In contrast, Bad and Bax inhibit the protective functions of Bcl-xL and Bcl-2, respectively. Although heterodimerization between Bcl-xL/Bad and Bcl-2/Bax was originally thought to be essential for the differential anti-apoptotic activity of Bcl-xL and Bcl-2,5,14 other results suggest that the formation of heterodimers may not be necessary for this death-repressing activity.15,16, Applications:  Immunoprecipitation15,16,  Immunohistochemistry,  Flow cytometry,  Western Blot, Recommended Dilution: Flow Cytometry: < 3ug/10e6 cells, Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. For long-term storage and to avoid repeated freezing and thawing, aliquot and add glycerol (40-50%). Store at -20°C or colder. Aliquots are stable for at least 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.