Figure 4: The stabilities of UCU, ESU and ESUC.

The effects of (A) high temperature (55 °C, thermal stabilities), (B) low temperature (4 °C, hypothermal stabilities), (C) trypsin (proteolytic stabilities), (D) acidity-alkalinity (pH stabilities) and (E) chemical agents (chemical stabilities) on the UCU activities. In Figure A–C and E, the original activity of UCU, ESU or ESUC was taken as 100%; in Figure D, the remaining activity of UCU-A at pH 8.5 was taken as 100%. The data were presented as mean value, n = 3. Standard deviation (SD) was lower than 5% (data not shown).