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. 2013 May 14;8(5):e63428. doi: 10.1371/journal.pone.0063428

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© 2013 Dai et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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SAM regeneration and utilization reactions of the SAM cycle are depicted. Enzymes of SAM cycle are: MeSe, methionine synthase; SAMS, SAM synthetase; BSMT, benzoic acid/salicylic acid: S-adenosyl-methionine carboxyl methyltransferase; SAM hydrolase. SAH, S′-adenosyl-homocysteine; ACC, 1-aminocyclopropane-1-carboxylate. ACCS, 1-aminocyclopropane-1-carboxylic acid synthase.