3CXF:
reference: Structural and mutational analyses of protein-protein interactions between transthyretin and retinol-binding protein., Zanotti G, Folli C, Cendron L, Alfieri B, Nishida SK, Gliubich F, Pasquato N, Negro A, Berni R, FEBS J. 2008 Dec;275(23):5841-54. PMID: 19021760

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