4IB6:
reference: The differences in binding 12-carbon aliphatic ligands by bovine beta-lactoglobulin isoform A and B studied by isothermal titration calorimetry and X-ray crystallography., Loch JI, Bonarek P, Polit A, Swiatek S, Dziedzicka-Wasylewska M, Lewinski K, J Mol Recognit. 2013 Aug;26(8):357-67. doi: 10.1002/jmr.2280. PMID: 23784992

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