5Z6T:
reference: Structural insight into D-xylose utilization by xylose reductase from Scheffersomyces stipitis., Son HF, Lee SM, Kim KJ, Sci Rep. 2018 Nov 28;8(1):17442. doi: 10.1038/s41598-018-35703-x. PMID: 30487522

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).