6A4D:
reference: Structural basis of small RNA hydrolysis by oligoribonuclease (CpsORN) from Colwellia psychrerythraea strain 34H., Lee CW, Park SH, Jeong CS, Cha SS, Park H, Lee JH, Sci Rep. 2019 Feb 25;9(1):2649. doi: 10.1038/s41598-019-39641-0. PMID: 30804410

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