O-(5'-phospho-DNA)-tyrosine intermediate
Nucleophile; for GTP cyclohydrolase activity
Proton acceptor; for GTP cyclohydrolase activity
Tripartite tricarboxylate transporter substrate binding protein
Schiff-base intermediate with substrate; via pyruvic acid
2-(S-cysteinyl)pyruvic acid O-phosphothioketal
Cysteine sulfenic acid (-SOH) intermediate
Isoglutamyl lysine isopeptide (Lys-Gln) (interchain with Q-Cter in protein Pup)
Involved in ionization of N3 of dUMP, leading to its activation
Phosphocysteine intermediate; for EIIB activity
O-(3'-phospho-DNA)-tyrosine intermediate
Gly-cisPro motif, important for rejection of L-amino acids
Proton acceptor; for FBP phosphatase activity
Proton donor/acceptor; for FBP aldolase activity
Schiff-base intermediate with DHAP; for FBP aldolase activity
Schiff-base intermediate with acetaldehyde
Proton acceptor; for processing activity
S-adenosylmethionine decarboxylase alpha chain
S-adenosylmethionine decarboxylase beta chain