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SRP0187 Sigma

Bcl-xL Active human

recombinant, expressed in E. coli, ≥90% (SDS-PAGE)

Synonym: Apoptosis regulator Bcl-X, BCL-XL/S, BCL2L1, Bcl-2-like protein 1



Related Categories Apoptosis and Cell Cycle, Bcl-2 Family Proteins, Bcl-2 Family Proteins and Antibodies, Cell Biology, Cell Signaling and Neuroscience,
recombinant   expressed in E. coli
assay   ≥90% (SDS-PAGE)
form   aqueous solution
mol wt   mol wt 28 kDa
NCBI accession no.   Z23115
shipped in   dry ice
storage temp.   −70°C
Gene Information   human ... BCL2L1(598)



Useful for the study of apoptosis, screening inhibitors, and selectivity profiling.

Preparation Note

Thaw on ice. Upon first thaw, briefly spin tube containing enzyme to recover full content of the tube. Aliquot enzyme into single use aliquots. Store remaining undiluted enzyme in aliquots at -70°C. Note: Enzyme is very sensitive to freeze/thaw cycles.

Physical form

Formulated in 25 mM Tris-HCl, pH 8.0, 100 mM NaCl, 0.05% Tween-20, 30% glycerol and 3 mM DTT.

Biochem/physiol Actions

BCL2L1 (B-cell lymphoma 2 like 1) or Bcl-xS functions as a dominant negative regulator of the anti-apoptotic isoform Bcl-xL. Bcl-xL is involved in modulating anti-apoptotic capacity of chemotherapy-resistant tumors. This protein is highly expressed in michigan cancer foundation 7 (MCF7) human breast carcinoma cells, and studies show that overexpression of Bcl-xS in these MCF-7 cells results in heightened sensitivity to chemotherapy-induced apoptosis by agents such as VP-16 or taxol.

General description

BCL2L1 (B-cell lymphoma 2 like 1) gene codes for the anti-apoptotic protein called Bcl-xL (B-cell lymphoma-extra large) and its isoform Bcl-xS. Bcl-xS functions as an antagonist of Bcl-xL. This gene is localized to human chromosome 20q11.21.

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Certificate of Analysis

Protocols & Articles


Huntington's Disease

Huntington's disease (HD) is an autosomal dominant, late-onset neurodegenerative disorder characterized by a selective neuronal cell death in the cortex and striatum leading to cognitive dysfunction,...
Carolyn L. Crankshaw
BioFiles v7 n2, 2011, 9–14
Keywords: Apoptosis, Huntington Disease, Transcription

Peer-Reviewed Papers


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