id author title date pages extension mime words sentences flesch summary cache txt cord-001898-ntqyjqqk Huang, Chih-Wei Lys-315 at the Interfaces of Diagonal Subunits of δ-Crystallin Plays a Critical Role in the Reversibility of Folding and Subunit Assembly 2016-01-05 .txt text/plain 6578 337 47 The changes in tryptophan fluorescence were Dilution of monomeric K315A mutant protein denatured in 5 M GdmCl resulted in refolding to a similar conformation as the original monomeric state (Fig 5A and 5B) . Since refolding of partly unfolded monomeric mutant δ-crystallin resulted in a conformation with high exposure of hydrophobic regions, the occurrence of protein aggregation in the process was determined using light scattering measurement. An increase in fluorescence intensity resulting from binding of ThT with the aggregates over time was observed following dilution of 0.84 and 3 M GdmCl denatured monomeric mutant δ-crystallin into buffer (Fig 6B) . The unique stable conformation from unfolding of K315A mutant protein in the presence of urea suggests that the interactions provided by this residue at the interfaces may play a critical role in stabilization of the quaternary structure of δ-crystallin. ./cache/cord-001898-ntqyjqqk.txt ./txt/cord-001898-ntqyjqqk.txt