TABLE 3.

In vitro peptidoglycan biosynthesis with membrane preparations from B. megaterium^a

Inhibitorb	Peptidoglycan synthesis (%) by B. megateriumc
None (control)	100
Tunicamycin	0
Moenomycin	17
Arylalkylidene rhodanine derivative 1	61
Arylalkylidene iminothiazolidin-4-ones
11	57
13	64
16	63

^aPeptidoglycan synthesis started with UDP-MurNAc-pentapeptide and UDP-[¹⁴C]-GlcNAc as substrates.

^bEach inhibitor was used at a concentration of 100 μg/ml.

^cThe total incorporation of radioactive S in peptidoglycan in the control experiment without inhibitor was 1.5 pmol (12%).