Anti-Cytokeratin 4/KRT4 Antibody Picoband®

Keratin, type I cytoskeletal 4 also known as cytokeratin-4 (CK-4) or keratin-4 (K4) is a protein that in humans is encoded by the KRT4 gene. The protein encoded by this gene is a member of the keratin gene family. The type II cytokeratins consist of basic or neutral proteins which are arranged in pairs of heterotypic keratin chains coexpressed during differentiation of simple and stratified epithelial tissues. This type II cytokeratin is specifically expressed in differentiated layers of the mucosal and esophageal epithelia with family member KRT13. Mutations in these genes have been associated with White Sponge Nevus, characterized by oral, esophageal, and anal leukoplakia. The type II cytokeratins are clustered in a region of chromosome 12q12-q13.

Inhibits both auto-ubiquitination of PARK2 and ubiquitination of target proteins by PARK2 (By similarity) . May function as a nucleotide exchange factor for HSP/HSP70, promoting ADP release, and activating Hsp70-mediated refolding. .

1. Barletta, C., Batticane, N., Ragusa, R. M., Leube, R., Peschle, C., Romano, V. Subchromosomal localization of two human cytokeratin genes (KRT4 and KRT15) by in situ hybridization. Cytogenet. Cell Genet. 54: 148-150, 1990. 2. Barletta, C., Batticane, N., Ragusa, R. M., Leube, R. E., Franke, W. W., Peschle, C., Romano, V. Sub-chromosomal localization of human cytokeratin 4, 15, and 19 genes. (Abstract) Cytogenet. Cell Genet. 51: 958 only, 1989. 3. Chao, S.-C., Tsai, Y.-M., Yang, M.-H., Lee, J. Y.-Y. A novel mutation in the keratin 4 gene causing white sponge naevus. Brit. J. Derm. 148: 1125-1128, 2003.

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.