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  • Title: Energy transfer studies between Trp residues of three lipocalin proteins family, α1-acid glycoprotein, (orosomucoid), β-lactoglobulin and porcine odorant binding protein and the fluorescent probe, 1-aminoanthracene (1-AMA).
    Author: Albani JR, Bretesche L, Vogelaer J, Kmiecik D.
    Journal: J Fluoresc; 2015 Jan; 25(1):167-72. PubMed ID: 25597043.
    Abstract:
    Energy transfer studies between Trp residues of α(1)-acid glycoprotein, β-lactoglobulin and porcine odorant binding protein (OBP) and the fluorescent probe 1-aminoanthracene (1-AMA) were performed. 1-AMA binds to the hydrophobic binding sites of the three proteins inducing a decrease in the fluorescence intensity of the Trp residues accompanied by an increase of that of 1-AMA. Our results indicate that 1-AMA is in close contact with hydrophobic tryptophan residue of β-lactoglobulin (Trp 19) to the difference of its binding to OBP, where Trp residues are far from the pocket and to α(1)-acid glycoprotein where three Trp residues are present at different areas of the protein.
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