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Coyne S, Litomska A, Chizzali C, Khalil MN, Richter K, Beerhues L, Hertweck C (2014) Control of plant defense mechanisms and fire blight pathogenesis through the regulation of 6-thioguanine biosynthesis in Erwinia amylovora. Chembiochem 15(3), 373-376.

Coyne S, Chizzali C, Khalil MN, Litomska A, Richter K, Beerhues L, Hertweck C. (2013) Biosynthesis of the antimetabolite 6-thioguanine in Erwinia amylovora plays a key role in fire blight pathogenesis. Angew Chem Int Ed Engl. 52(40), 10564-10568.