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. Author manuscript; available in PMC: 2013 Sep 23.
Published in final edited form as: Biochim Biophys Acta. 2011 May 10;1814(11):1438–1446. doi: 10.1016/j.bbapap.2011.05.002

Scheme 1.

Scheme 1

Illustration of the internal proton transfer of the external aldimine between PLP cofactor and l-dopa, and the decarboxylation reaction catalyzed by l-dopa decarboxylase.