TABLE 1.

Relative rates of PID binding to purified iNOSfl and consequent iNOS monomerization and inhibition of activity in the presence and absence of Arg and H₄B

Rates were derived through linear fitting of the curves depicted in Fig. 3. Details of the experiment are given under “Experimental Procedures.”

Treatment	Rate of binding	Rate of monomerization	Rate of inhibition
	min−1	min−1	min−1
−Arg, −H4B	1.862 ± 0.071	0.533 ± 0.014	0.913 ± 0.027
+Arg	1.774 ± 0.043	0.471 ± 0.023	0.833 ± 0.014
+H4B	1.272 ± 0.055	0.356 ± 0.011	0.654 ± 0.019
+Arg, +H4B	1.111 ± 0.052	0.304 ± 0.005	0.511 ± 0.008