4U8G:
reference: Metabolic fate of unsaturated glucuronic/iduronic acids from glycosaminoglycans: molecular identification and structure determination of Streptococcal isomerase and dehydrogenase., Maruyama Y, Oiki S, Takase R, Mikami B, Murata K, Hashimoto W, J Biol Chem. 2015 Jan 20. pii: jbc.M114.604546. PMID: 25605731

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