5ILG:
reference: Structural Insights into the Drosophila melanogaster Retinol Dehydrogenase, a Member of the Short-Chain Dehydrogenase/Reductase Family., Hofmann L, Tsybovsky Y, Alexander NS, Babino D, Leung NY, Montell C, Banerjee S, von Lintig J, Palczewski K, Biochemistry. 2016 Nov 29;55(47):6545-6557. doi: 10.1021/acs.biochem.6b00907., Epub 2016 Nov 16. PMID: 27809489

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