1X07:
reference: Crystal structures of undecaprenyl pyrophosphate synthase in complex with magnesium, isopentenyl pyrophosphate, and farnesyl thiopyrophosphate: roles of the metal ion and conserved residues in catalysis., Guo RT, Ko TP, Chen AP, Kuo CJ, Wang AH, Liang PH, J Biol Chem 2005 May 27;280(21):20762-74. Epub 2005 Mar 23. PMID: 15788389

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