A tryptophan rotamer located in a polar environment probes pH-dependent conformational changes in bovine beta-lactoglobulin A.
Harvey BJ, Bell E, Brancaleon L. A tryptophan rotamer located in a polar environment probes pH-dependent conformational changes in bovine beta-lactoglobulin A. J Phys Chem B. 2007 Mar 15; 111(10):2610-20.