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(a) Time course of the cleavage of N-Trt end groups in HEE-PRX (4.1HEE-PRX) at pH 5.0 (closed symbols) and 7.4 (open symbols) at various temperatures (squares: 50 °C, circles: 37 °C, triangles: 25 °C, diamonds: 4 °C). (b) Arrhenius plots for the cleavage of N-Trt end groups in HEE-PRX (4.1HEE-PRX) at pH 5.0 (closed squares) and 7.4 (open circles).
