1BXS:
reference: Sheep liver cytosolic aldehyde dehydrogenase: the structure reveals the basis for the retinal specificity of class 1 aldehyde dehydrogenases., Moore SA, Baker HM, Blythe TJ, Kitson KE, Kitson TM, Baker EN, Structure 1998 Dec 15;6(12):1541-51. PMID: 9862807

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