5DO7:
reference: Crystal structure of the human sterol transporter ABCG5/ABCG8., Lee JY, Kinch LN, Borek DM, Wang J, Wang J, Urbatsch IL, Xie XS, Grishin NV, Cohen JC, Otwinowski Z, Hobbs HH, Rosenbaum DM, Nature. 2016 May 4;533(7604):561-4. doi: 10.1038/nature17666. PMID: 27144356

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