Figure 3.
Determination of AdoMet parameters of Trm5. (A) Pre-steady-state kinetics of the m1G37 synthesis reaction by rapidly mixing M. jannaschii Trm5 (5 µM)-AdoMet (0.4–9.6 µM) complexes with tRNA (15 µM). (B) Plot of the rate vs. concentration data of (A) fit to a hyperbolic equation to derive the Kd for tRNA. (C) Pre-steady-state kinetics of the m1G37 synthesis reaction by rapidly mixing M. jannaschii Trm5 (5 µM)-AdoHcy (0–0.2 µM) complexes with tRNA (15 µM) and AdoMet (25 µM). (D) Plot of the data of (C) fit to a hyperbolic equation to derive Kd for AdoHcy.