Mouse Anti-Human Bcl-xL-PE

The purified (UNLB) antibody is supplied as 0.1 mg of purified immunoglobulin in 1.0 mL of 100 mM borate buffered saline, pH 8.0. No preservatives or amine-containing buffer salts added. Store at 2-8 °C. <br>The fluorescein (FITC) conjugate is supplied as 0.1 mg in 1.0 mL of PBS/NaN3. Store at 2-8 °C. <br>The biotin (BIOT) conjugate is supplied as 0.1 mg in 1.0 mL of PBS/NaN3. Store at 2-8 °C. <br>The R-phycoerythrin (R-PE) conjugate is supplied as 0.1 mg in 1.0 mL of PBS/NaN3 and a stabilizing agent. Store at 2-8 °C. Do not freeze! <br>Protect conjugated forms from light. Reagents are stable for the period shown on the label if stored as directed.

Human Bcl-xL (Mr 29 kDa)<br>Apoptosis, or programmed cell death, is a well-documented phenomenon in many cellular systems.1 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.2 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.5-8 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 Mab 7B2.5 recognizes both human and rodent Bcl-xL.17