Task: Class Definition Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes 'peptide-O-fucosyltransferase activity'?

A. Catalysis of the reaction: UTP + (protein-PII) = diphosphate + uridylyl-(protein-PII).
B. Catalysis of the reaction: protein L-glutamine + H2O = protein L-glutamate + NH3.
C. Catalysis of the transfer of an alpha-L-fucosyl residue from GDP- beta-L-fucose to the serine hydroxy group of a protein acceptor.
D. Catalysis of the reaction: palmitoyl-protein + H2O = palmitate + protein.

Answer: Catalysis of the transfer of an alpha-L-fucosyl residue from GDP- beta-L-fucose to the serine hydroxy group of a protein acceptor.