Meanwhile the number of TBST washes was increased to 4, 6, and 8 times in the second, third, and fourth rounds of selection, respectively.
For the second round of selection, the cells selected at the first round were incubated, and β-glycosidases in cells were expressed.
For the third round of selection, the heat-treated variant enzymes selected at the second round were purified by His-Trap chromatography, and the hydrolytic activities of the purified enzymes for ginsenoside Rd were determined.
Indeed, negative studies have been published and were included in our initial list of selected papers [ 30, 32, 41] and in the second round of selection [ 20, 23, 26- 29].
Within the cathepsin family of cysteine proteases, the first round of selection was on cathepsin L and cathepsin B, and then selected hits were further evaluated for binding to cathepsin K and cathepsin S. Five highly selective sequences with submicromolar affinities towards cathepsin L were identified.
In the third round of selection, two different strategies, which differed in the number of washes and the concentration of the coating conjugates, were used to select for specific binders to monensin.
Ms. Resnick pointed out that in the first round of selection, the defense had moved to strike 7 of the 10 Jews but only one of the 30 African-Americans.
