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“We found that the β-sheet and β-turn formation of SF are significantly enhanced through increased dissociation of Asp and Glu as revealed by a titration experiment of SF solution to estimate apparent pK1 and pK2 values together with circular dichroism spectroscopy.”
Journal of colloid and interface science • 2001 | View Paper
“When residues of both an aspartic acid and a glutamic acid of SF were methylated or amidated, the activity increased by 20%, although their water solubility was lost.”