Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Dixon plot for the determination of the inhibition constant (Ki) of either histatin 5 (A) or leupetin (B) against Arg-gingipain. Enzyme assays were carried out with 3.3 nM gingipain in the presence of increasing concentrations of histatin 5 at two different concentrations of BAPNA (60 and 106 μM). The reciprocals of velocity were plotted against the histatin 5 concentration, and the Ki value was obtained from the intercepts of two lines at two concentrations of substrate.
