3EMR:
reference: Synthesis of 5-hydroxyectoine from ectoine: crystal structure of the non-heme iron(II) and 2-oxoglutarate-dependent dioxygenase EctD., Reuter K, Pittelkow M, Bursy J, Heine A, Craan T, Bremer E, PLoS One. 2010 May 14;5(5):e10647. PMID: 20498719

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