Fig. 5.
Protection of CPS1 in the presence of NAG or NCG with MgATP. (A–B) Remaining relative activity for the wild-type CPS1 (A) and E1034G mutant (B) after incubation with elastase for 40 and 60 min in the presence of MgATP (brown curve), MgATP + NAG (blue curve) or MgATP + NCG (green curve). (C–D) Fluorescence signals for the wild-type CPS1 (C) and E1034G mutant (D) after incubation with elatase for 10 min in the presence of MgATP (brown dots), MgATP + NAG (blue dots) or MgATP + NCG (green dots). (E) Relative fluorescence for the M792I mutant in presence of MgATP (blue curve), MgATP + NAG (green curve) or MgATP + NCG (red curve) when temperature ramps from 298 K to 353 K. (F) Fluorescence signals for the M792I mutant after incubation with elastase for 10 min in the presence of MgATP (blue dots), MgATP + NAG (green dots) or MgATP + NCG (red dots).