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. Author manuscript; available in PMC: 2013 Apr 5.
Published in final edited form as: Amino Acids. 2010 Mar 17;41(5):1013–1036. doi: 10.1007/s00726-010-0545-z

Fig. 7.

Fig. 7

Schematic illustration of biotin ligase (a), phosphopantetheinyl transferase (PPTase) (b), formylglycine-generating enzyme (FGE) (c), human O6-alkylguanine-DNA alkyltransferases (hAGT) (d), and transglutaminase (TGase) (e) catalyzed modification