4DWX:
reference: Crystal structure and chitin oligosaccharide-binding mode of a "loopful" family GH19 chitinase from rye, Secale cereal, seeds., Ohnuma T, Numata T, Osawa T, Inanaga H, Okazaki Y, Shinya S, Kondo K, Fukuda T, Fukamizo T, FEBS J. 2012 Jul 25. doi: 10.1111/j.1742-4658.2012.08723.x. PMID: 22831795

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