3FL8:
reference: Crystal structure of Bacillus anthracis dihydrofolate reductase with the dihydrophthalazine-based trimethoprim-derivative RAB1 provides a structural explanation of potency and selectivity., Bourne CR, Bunce RA, Bourne PC, Berlin KD, Barrow EW, Barrow WW, Antimicrob Agents Chemother. 2009 Apr 13. PMID: 19364848

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