4ADV:
reference: Structural Insights into Methyltransferase KsgA Function in 30S Ribosomal Subunit Biogenesis., Boehringer D, O'Farrell HC, Rife JP, Ban N, J Biol Chem. 2012 Mar 23;287(13):10453-9. Epub 2012 Feb 3. PMID: 22308031

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