4J3U:
reference: Oligosaccharide and substrate binding in the starch debranching enzyme barley limit dextrinase., Moller MS, Windahl MS, Sim L, Bojstrup M, Abou Hachem M, Hindsgaul O, Palcic M, Svensson B, Henriksen A, J Mol Biol. 2015 Mar 27;427(6 Pt B):1263-77. doi: 10.1016/j.jmb.2014.12.019. Epub, 2015 Jan 3. PMID: 25562209

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