1KLK:
reference: Structure-based enzyme inhibitor design: modeling studies and crystal structure analysis of Pneumocystis carinii dihydrofolate reductase ternary complex with PT653 and NADPH., Cody V, Galitsky N, Luft JR, Pangborn W, Rosowsky A, Queener SF, Acta Crystallogr D Biol Crystallogr 2002 Jun;58(Pt 6 Pt 2):946-54. PMID: 12037296

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