5YN3:
reference: Crystal Structure and Biochemical Characterization of Xylose Isomerase from Piromyces sp. E2., Son H, Lee SM, Kim KJ, J Microbiol Biotechnol. 2018 Apr 28;28(4):571-578. doi: 10.4014/jmb.1711.11026. PMID: 29385668

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