Anti-LEF1 Antibody Picoband®

Lymphoid enhancer-binding factor 1 (LEF1) is a protein that in humans is encoded by the LEF1 gene. This gene encodes a transcription factor belonging to a family of proteins that share homology with the high mobility group protein-1. The protein encoded by this gene can bind to a functionally important site in the T-cell receptor-alpha enhancer, thereby conferring maximal enhancer activity. This transcription factor is involved in the Wnt signaling pathway, and it may function in hair cell differentiation and follicle morphogenesis. Mutations in this gene have been found in somatic sebaceous tumors. This gene has also been linked to other cancers, including androgen-independent prostate cancer. Alternative splicing results in multiple transcript variants.

Disintegrin and metalloproteinase domain-containing protein 17; ADAM 17; 3.4.24.86; Snake venom-like protease; TNF-alpha convertase; TNF-alpha-converting enzyme; CD156b; ADAM17; CSVP, TACE

Ubiquitously expressed. Expressed at highest levels in adult heart, placenta, skeletal muscle, pancreas, spleen, thymus, prostate, testes, ovary and small intestine, and in fetal brain, lung, liver and kidney.

Cleaves the membrane-bound precursor of TNF-alpha to its mature soluble form. Responsible for the proteolytical release of soluble JAM3 from endothelial cells surface. Responsible for the proteolytic release of several other cell-surface proteins, including p75 TNF-receptor, interleukin 1 receptor type II, p55 TNF-receptor, transforming growth factor-alpha, L-selectin, growth hormone receptor, MUC1 and the amyloid precursor protein. Acts as an activator of Notch pathway by mediating cleavage of Notch, generating the membrane-associated intermediate fragment called Notch extracellular truncation (NEXT) . Plays a role in the proteolytic processing of ACE2.

1. de Lau, W., Clevers, H. LEF1 turns over a new leaf. Nature Genet. 28: 3-5, 2001. 2. Driessens, G., Zheng, Y., Gajewski, T. F. Beta-catenin does not regulate memory T cell phenotype. (Letter) Nature Med. 16: 513-514, 2010. 3. Galceran, J., Sustmann, C., Hsu, S.-C., Folberth, S., Grosschedl, R. LEF1-mediated regulation of Delta-like1 links Wnt and Notch signaling in somitogenesis. Genes Dev. 18: 2718-2723, 2004.

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.