Table 2: Kinetic parameters for the hydrolysis of Arg-Arg-NA, zinc contents, and zinc dissociation constants of wild-type and mutated rat DPP IIIs.

Enzymes
(M-1 s-1)
Zinc content (mol/mol of proteina)Zinc dissociation constant (M) ( )

Wild-type
E507D
E507A
E512D
E512A

aValues are means ± SD of two separately prepared enzymes with duplicate determinations.