1HQT:
reference: The crystal structure of an aldehyde reductase Y50F mutant-NADP complex and its implications for substrate binding., Ye Q, Hyndman D, Green NC, Li L, Jia Z, Flynn TG, Chem Biol Interact 2001 Jan 30;130-132(1-3):651-8. PMID: 11306083

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