This entry represents the C-terminal of the eukaryotic secreted Golgi casein kinase protein FAM20C. FAM20C is the Golgi casein kinase that phosphorylates secretory pathway proteins within Ser-x-Glu/pSer motifs. Mutations in the FAM20C gene cause Raine syndrome, an autosomal recessive osteosclerotic bone dysplasia [].
FAM20 is a family of secreted proteins with a potential role in regulating differentiation and function of hematopoietic and other tissues. Proteins in this family include FAM20A [], FAM20B or glycosaminoglycan xylosylkinase [], and FAM20C or dentin matrix protein 4 [, ].