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. 2002 Aug;68(8):3925–3931. doi: 10.1128/AEM.68.8.3925-3931.2002

TABLE 3.

Kinetic parameters for hydrolysis of various p-nitrophenyl esters

p-Nitrophenyl substrate Km (μM) kcat (s−1) kcat/Km (s−1 μM−1)
Propionate (C3) 348 ± 80 1,480 ± 110 4.3
Butyrate (C4) 164 ± 7 1,690 ± 20 10
Valerate (C5) 71.0 ± 10.0 2,070 ± 80 29
Caproate (C6) 44.4 ± 5.9 2,620 ± 90 59
Caprylate (C8) 51.0 ± 25.6 1,600 ± 270 31