1JBH:
reference: Structure and backbone dynamics of Apo- and holo-cellular retinol-binding protein in solution., Franzoni L, Lucke C, Perez C, Cavazzini D, Rademacher M, Ludwig C, Spisni A, Rossi GL, Ruterjans H, J Biol Chem 2002 Jun 14;277(24):21983-97. PMID: 11934897

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