4UHC:
reference: Structural studies of a thermophilic esterase from a new Planctomycetes species, Thermogutta terrifontis., Sayer C, Isupov MN, Bonch-Osmolovskaya E, Littlechild JA, FEBS J. 2015 May 22. doi: 10.1111/febs.13326. PMID: 26011036

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