Involved in ionization of N3 of dUMP, leading to its activation
Proton acceptor; for processing activity
Schiff-base intermediate with substrate; via pyruvic acid
Resolvase/invertase-type recombinase catalytic
O-(3'-phospho-DNA)-tyrosine intermediate
Cysteine sulfenic acid (-SOH) intermediate; for peroxidase activity
Schiff-base intermediate with acetaldehyde
tRNA(Ile2) 2-agmatinylcytidine synthetase TiaS
Removed in mature form; by autocatalysis