1GGL:
reference: Identification, retinoid binding, and x-ray analysis of a human retinol-binding protein., Folli C, Calderone V, Ottonello S, Bolchi A, Zanotti G, Stoppini M, Berni R, Proc Natl Acad Sci U S A 2001 Mar 27;98(7):3710-5. PMID: 11274389

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