Anti-CCP antibodies are produced through which process?

Anti-CCP antibodies are produced through which process?

• A. Phosphorylation
• B. Citrullination
• C. Glycosylation
• D. Methylation

Answer: (B)

Anti-CCP antibodies are formed against citrullinated proteins. Citrullination is a post-translational modification where the enzyme peptidylarginine deiminase converts arginine residues into citrulline, creating new epitopes (neoepitopes) that the immune system may recognize as foreign in rheumatoid arthritis. The antibodies specifically target these citrullinated peptide sequences, not proteins modified by other processes. Phosphorylation, glycosylation, and methylation are different modifications and do not generate the citrullinated epitopes that anti-CCP antibodies recognize.

Anti-CCP antibodies are formed against citrullinated proteins. Citrullination is a post-translational modification where the enzyme peptidylarginine deiminase converts arginine residues into citrulline, creating new epitopes (neoepitopes) that the immune system may recognize as foreign in rheumatoid arthritis. The antibodies specifically target these citrullinated peptide sequences, not proteins modified by other processes. Phosphorylation, glycosylation, and methylation are different modifications and do not generate the citrullinated epitopes that anti-CCP antibodies recognize.