Table 8.

Effect of metals (chloride salts) on the kinetic and thermodynamic stabilities of B. licheniformis xylose isomerasea

MetalHalf-life (min)Ea of inactivation (kcal/mol)Tm (°C)
None24 (40°C)9250.3
Mg2+ 35 (56°C)14453.3
Co2+ 18 (70.5°C)27973.4
Mn2+ 50 (71.5°C)25773.6
  • a C. Vieille, K. L. Epting, R. M. Kelly, and J. G. Zeikus, submitted for publication.