Recombinant protein encoding aa 230-425 of human keratin 20.
Alternative Synonym:
CD20,CK20,CK-20,cytokeratin 20,K20,keratin 20, type I,keratin, type I cytoskeletal 20,KRT21,protein IT.
KeRatins are intermediate filament proteins responsible for the structural integrity of epithelial cells and are subdivided into cytokeRatins and hair keRatins. KeRatin 20 / cytokeRatin20 (CK20) is a Type-I keRatin which is primarily expressed in gastric and intestinal epithelium, urothelium, and Merkel-cells. CK20 is expressed in adenocarcinomas of the colon, stomach, pancreas and the bile system. CK20 is also present in mucinous ovarian tumors, transitional-cell and Merkel-cell carcinomas. Notably, the squamous cell carcinomas and adenocarcinomas of the breast, lung, and endometrium, non-mucinous tumors of the ovary, and small cell carcinomas lack in CK20.