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Table 7 Activation parameters for hydrolyses catalyzed by α-chymotrypsin

From: On the curvature in logarithmic plots of rate coefficients for chemical reactions

Substrate a Δu TS / kcal mol-1 σ
Suc-Phe-pNAa 133
(36.81)
1.62
(28.06)
94.58
(21.59)
5.61 10-2
(1.78 10-2)
0.85
(5.21 10-2)
Suc-Ala-Phe-pNA 221
(21.75)
0.31
(6.65 10-2)
143.24
(12.60)
3.24 10-2
(1.26 10-2)
0.93
(1.05 10-2)
Suc-Ala-Ala-Pro-Phe-pNA 157
(36.31)
8.22 102
(2.94 103)
103.56
(20.94)
6.16 10-2
(1.90 10-2)
0.91
(3.43 10-2)
  1. Standard deviations are given in parentheses.
  2. a pNA = p-nitroanilide
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