Background
Protein citrullination is an emerging PTM that results from the conversion of peptidyl arginine to peptidyl citrulline. Due to the exchange of an imine for a carbonyl group, this reaction is referred to as deimination. This PTM is catalyzed by the calcium-regulated peptidylarginine deiminases (PAD). Dysregulated PAD expression and aberrant protein citrullination have been implicated in numerous human diseases such as osteosarcoma, colorectal cancer, esophagus cancer and breast cancer.
Cellular location
Nucleus