TABLE 1.

Critical concentration of MamK in the presence of different nucleotides

MamK	Nucleotide	Critical concentration
		μm
Wild type	ATP	0.69 ± 0.15
	ADP	>40
	GTP	2.01 ± 0.23
Wild typea	ATP	0.71 ± 0.1
E143A	ATP	0.38 ± 0.08

^a This is in polymerization buffer with 75 mm KCl.