Anti-MCL1 Antibody Picoband®

BCL2L3, also known as MCL1 (myeloid cell leukemia sequence 1) encodes an anti-apoptotic protein, which is a member of the Bcl-2 family. Alternative splicing results in multiple transcript variants. The longest gene product (isoform 1) enhances cell survival by inhibiting apoptosis while the alternatively spliced shorter gene products (isoform 2 and isoform 3) promote apoptosis and are death-inducing. Using the methods of somatic cell hybrid analysis and fluorescence in situ hybridization), the MCL1 gene is mapped to human 1q21.MCL1is a critical and specific regulator essential for ensuring the homeostasis of early hematopoietic progenitors. Phosphorylation of MCL1 s its interaction with the tumor suppressor protein FBW7, which is the substrate-binding component of a ubiquitin ligase complex. The polyubiquitylation of MCL1 then targets it for proteasomal degradation. The degradation of MCL1 was blocked in patient-derived tumor cells that lacked FBW7 or had loss-of-function mutations in FBW7, conferring resistance to antitubulin agents and promoting chemotherapeutic-induced polyploidy.

Apoptosis, Apoptotic Markers, Cancer, Cell Biology, Cell Death, Intracellular, Invasion/Microenvironment, Metabolism, Metabolism Processes, Pathways and Processes

Involved in the regulation of apoptosis versus cell survival, and in the maintenance of viability but not of proliferation. Mediates its effects by interactions with a number of other regulators of apoptosis. Isoform 1 inhibits apoptosis. Isoform 2 promotes apoptosis. .

1. Inuzuka, H., Shaik, S., Onoyama, I., Gao, D., Tseng, A., Maser, R. S., Zhai, B., Wan, L., Gutierrez, A., Lau, A. W., Xiao, Y., Christie, A. L., Aster, J., Settleman, J., Gygi, S. P., Kung, A. L., Look, T., Nakayama, K. I., DePinho, R. A., Wei, W.SCF (FBW7) regulates cellular apoptosis by targeting MCL1 for ubiquitylation and destruction.Nature 471: 104-109, 2011. 2. Leu, J. I.-J., Dumont, P., Hafey, M., Murphy, M. E., George, D. L.Mitochondrial p53 activates Bak and causes disruption of a Bak-Mcl1 complex. Nature Cell Biol. 6: 443-450, 2004. 3. Schwickart, M., Huang, X., Lill, J. R., Liu, J., Ferrando, R., French, D. M., Maecker, H., O'Rourke, K., Bazan, F., Eastham-Anderson, J., Yue, P., Dornan, D., Huang, D. C. S., Dixit, V. M.Deubiquitinase USP9X stabilizes MCL1 and promotes tumour cell survival.Nature 463: 103-107, 2010.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.