Isoglutamyl lysine isopeptide (Gln-Lys) (interchain with K-? in acceptor proteins)
Exported alanine and valine rich protein
Nucleophile; cysteine thiosulfonate intermediate
O-(3'-phospho-DNA)-tyrosine intermediate
Schiff-base intermediate with substrate; via pyruvic acid
Cysteine sulfenic acid (-SOH) intermediate; for peroxidase activity
Twin-arginine translocation pathway signal
Cysteine sulfenic acid (-SOH) intermediate
Gly-cisPro motif, important for rejection of L-amino acids
Arginine biosynthesis bifunctional protein ArgJ alpha chain
Arginine biosynthesis bifunctional protein ArgJ beta chain
Amino acid ABC transporter substrate-binding protein
Nucleophile; for GTP cyclohydrolase activity
Proton acceptor; for GTP cyclohydrolase activity