Table - link
||Stryer et al, Biochemistry, 5th edition 2002, Chapter 8 Enzymes: Basic Concepts and Kinetics, p.190 table 8.1
||Radzicka A, Wolfenden R. A proficient enzyme. Science. 1995 Jan 6 267(5194):90-3.PubMed ID7809611
||"Enzymes accelerate reactions by factors of as much as a million or more
(Table 8.1). Indeed, most reactions in biological systems do not take place
at perceptible rates in the absence of enzymes."