Involved in ionization of N3 of dUMP, leading to its activation
PQQ-binding-like beta-propeller repeat protein
Nucleophile; cysteine thiosulfonate intermediate
Phosphoribosylglycinamide formyltransferase
Cysteine sulfenic acid (-SOH) intermediate; for peroxidase activity
Schiff-base intermediate with substrate; via pyruvic acid
O-(5'-phospho-DNA)-tyrosine intermediate
Gly-cisPro motif, important for rejection of L-amino acids
Glyco_hydro_64 domain-containing protein
Isoglutamyl lysine isopeptide (Lys-Gln) (interchain with Q-Cter in protein Pup)
Endo/exonuclease/phosphatase domain-containing protein
Cytochrome bc1 complex Rieske iron-sulfur subunit
Peptidase_C39_2 domain-containing protein
Pro_Al_protease domain-containing protein
Phosphatidylserine decarboxylase alpha chain
Phosphatidylserine decarboxylase beta chain
PGF-CTERM sorting domain-containing protein
PLD phosphodiesterase domain-containing protein
Nucleophile; for GTP cyclohydrolase activity
Proton acceptor; for GTP cyclohydrolase activity
O-(3'-phospho-DNA)-tyrosine intermediate
Resolvase/invertase-type recombinase catalytic
Removed in mature form; by autocatalysis
Phosphocysteine intermediate; for EIIB activity
Arginine biosynthesis bifunctional protein ArgJ alpha chain
Arginine biosynthesis bifunctional protein ArgJ beta chain
Proton acceptor; for processing activity
S-adenosylmethionine decarboxylase alpha chain
S-adenosylmethionine decarboxylase beta chain
SurA N-terminal domain-containing protein
Proton donor; for beta-elimination activity
Proton donor; for delta-elimination activity
Isoglutamyl lysine isopeptide (Gln-Lys) (interchain with K-? in acceptor proteins)