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

Which of the following definitions best describes 'transferase activity, transferring one-carbon groups'?

A. Catalysis of the reaction: 2 Fe(3+) + 4 H2O + L-histidyl-[4-amino-5-hydroxymethyl-2-methylpyrimidine phosphate synthase] + N(6)-(pyridoxal phosphate)-L-lysyl-[4-amino-5-hydroxymethyl-2-methylpyrimidine phosphate synthase] = (2S)-2-amino-5-hydroxy-4-oxopentanoyl-[4-amino-5-hydroxymethyl-2-methylpyrimidine phosphate synthase] + 3-oxopropanoate + 4-amino-2-methyl-5-(phosphooxymethyl)pyrimidine + 2 Fe(2+) + 2 H+ + L-lysyl-[4-amino-5-hydroxymethyl-2-methylpyrimidine phosphate synthase].
B. Catalysis of the transfer of a sulfur-containing group from one compound (donor) to another (acceptor).
C. Catalysis of the transfer of a methyl group to an acceptor molecule.
D. Catalysis of the transfer of a one-carbon group from one compound (donor) to another (acceptor).

Answer: Catalysis of the transfer of a one-carbon group from one compound (donor) to another (acceptor).