1QD1:
reference: The crystal structure of the formiminotransferase domain of formiminotransferase-cyclodeaminase: implications for substrate channeling in a bifunctional enzyme., Kohls D, Sulea T, Purisima EO, MacKenzie RE, Vrielink A, Structure Fold Des 2000 Jan 15;8(1):35-46. PMID: 10673422

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