3VU2:
reference: Crystal structure of the rice branching enzyme I (BEI) in complex with maltopentaose., Chaen K, Noguchi J, Omori T, Kakuta Y, Kimura M, Biochem Biophys Res Commun. 2012 Aug 3;424(3):508-11. doi:, 10.1016/j.bbrc.2012.06.145. Epub 2012 Jul 3. PMID: 22771800

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