Table 2.

EPR-derived data for ACCO⋅NO complexes

Compound*	E/D	%†	P1/2,‡ mW
No added compound	0.008	0	0.95
ACC	0.035	100	8.5
ACC analogs
Cyclopropane carboxylic acid	0.008		9.1
Cyclopropylamine	0.011		11.2
α-Aminoisobutyric acid	0.035/0.008	84.3	10.4
d-Alanine	0.035/0.008	80.7	ND
l-Alanine	0.035/0.008	40.2	ND
Glycine	0.035/0.008	5.3	ND

All samples contain 0.21 mM Fe(II)ACCO, 50 mM HaHCO₃, 200 mM Mops at pH 7.2, and 10% glycerol. 

^*ACC and α-aminoisobutyric acid concentrations were 10 mM and the concentration of all other compounds was 100 mM. 

^†This value refers to the percent of S = spins possessing an E/D = 0.035. 

^‡Power at half-saturation. ND, not determined.