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Ser and Thr residue-specific enzyme modifications. Reactions of A) anaerobic formylglycine generating enzyme (FGE); B) O-linked N-acetylglucosamine transferase (OGT); C) TolF prenyltransferase; D) cyclodehydaratase YcaO; E) ApbE flavin transferase. Nonnative groups accepted by the enzymes. i) OGTs and ii) ApbE.
