5MLT:
reference: Structural characterization of the Streptococcus pneumoniae carbohydrate substrate-binding protein SP0092., Culurgioni S, Tang M, Walsh MA, Acta Crystallogr F Struct Biol Commun. 2017 Jan 1;73(Pt 1):54-61. doi:, 10.1107/S2053230X16020252. Epub 2017 Jan 1. PMID: 28045395

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