| 4HPN: reference: Purification, crystallization and structural elucidation of D-galactaro-1,4-lactone cycloisomerase from Agrobacterium tumefaciens involved in pectin degradation., Vetting MW, Bouvier JT, Gerlt JA, Almo SC, Acta Crystallogr F Struct Biol Commun. 2016 Jan;72(Pt 1):36-41. doi:, 10.1107/S2053230X15023286. Epub 2016 Jan 1. PMID: 26750482 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).