Cysteine sulfenic acid (-SOH) intermediate
5-glutamyl coenzyme A thioester intermediate
Cysteine sulfenic acid (-SOH) intermediate; for peroxidase activity
Isoglutamyl lysine isopeptide (Lys-Gln) (interchain with Q-Cter in protein Pup)
Phosphatidylserine decarboxylase alpha chain
Phosphatidylserine decarboxylase beta chain
Schiff-base intermediate with substrate; via pyruvic acid
Cytochrome bc1 complex cytochrome c subunit
Involved in ionization of N3 of dUMP, leading to its activation
Schiff-base intermediate with substrate; via topaquinone
Conserved alanine and proline rich protein
Gly-cisPro motif, important for rejection of L-amino acids
Nucleophile; cysteine thiosulfonate intermediate
Isoglutamyl lysine isopeptide (Gln-Lys) (interchain with K-? in acceptor proteins)
Tryptophyl-tyrosyl-methioninium (Tyr-Met) (with Trp-102)
Nucleophile; for GTP cyclohydrolase activity
Proton acceptor; for GTP cyclohydrolase activity
CDP-diacylglycerol--serine O-phosphatidyltransferase
Cytochrome bc1 complex Rieske iron-sulfur subunit