Anti-CASK Antibody Picoband®

Peripheral plasma membrane protein CASK is a protein that in humans is encoded by the CASK gene. This gene encodes a calcium/calmodulin-dependent serine protein kinase. The encoded protein is a MAGUK (membrane-associated guanylate kinase) protein family member. These proteins are scaffold proteins and the encoded protein is located at synapses in the brain. Mutations in this gene are associated with FG syndrome 4, intellectual disability and microcephaly with pontine and cerebellar hypoplasia, and a form of X-linked intellectual disability. Multiple transcript variants encoding different isoforms have been found for this gene.

Signal Transduction, Cell Biology, Cell Cycle, Stem Cells, Cell Differentiation, Cytoskeleton/ECM, Extracellular Matrix, Structures, ECM Proteins, Mesenchymal Stem Cells

ATP-dependent RNA helicase required during spermatogenesis (PubMed:10920202, PubMed:21034600) . Required to repress transposable elements and preventing their mobilization, which is essential for the germline integrity (By similarity) . Acts via the piRNA metabolic process, which mediates the repression of transposable elements during meiosis by forming complexes composed of piRNAs and Piwi proteins and governs the methylation and subsequent repression of transposons (By similarity) . Involved in the secondary piRNAs metabolic process, the production of piRNAs in fetal male germ cells through a ping-pong amplification cycle (By similarity) . Required for PIWIL2 slicing-triggered piRNA biogenesis: helicase activity enables utilization of one of the slice cleavage fragments generated by PIWIL2 and processing these pre-piRNAs into piRNAs (By similarity) .

1. Atasoy, D., Schoch, S., Ho, A., Nadasy, K. A., Liu, X., Zhang, W., Mukherjee, K., Nosyreva, E. D., Fernandez-Chacon, R., Missler, M., Kavalali, E. T., Sudhof, T. C. Deletion of CASK in mice is lethal and impairs synaptic function. Proc. Nat. Acad. Sci. 104: 2525-2530, 2007. 2. Butz, S., Okamoto, M., Sudhof, T. C. A tripartite protein complex with the potential to couple synaptic vesicle exocytosis to cell adhesion in brain. Cell 94: 773-782, 1998. 3. Cohen, A. R., Woods, D. F., Marfatia, S. M., Walther, Z., Chishti, A. H., Anderson, J. M. Human CASK/LIN-2 binds syndecan-2 and protein 4.1 and localizes to the basolateral membrane of epithelial cells. J. Cell Biol. 142: 129-138, 1998. Note: Erratum: J. Cell Biol. 142: following 1156, 1998.

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 freezing and thawing.