3O94:
reference: High-resolution crystal structures of Streptococcus pneumoniae nicotinamidase with trapped intermediates provide insights into the catalytic mechanism and inhibition by aldehydes ., French JB, Cen Y, Sauve AA, Ealick SE, Biochemistry. 2010 Oct 12;49(40):8803-12. Epub 2010 Sep 20. PMID: 20853856

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