TABLE 3.

Previously classified essential genes

b no.	Gene	Global studya
b1238	tdk	A
b1269	yciL	A
b1359	ydaU	A
b1463	nhoA	A
b1471	yddk	A
b1765	ydjA	A
b1874	cutC	A
b1961	dcm	A
b2163	yeiL	A
b3134	agaW	A
b3219	yhcF	A
b3863	polA	B

^aPreviously described as essential by Gerdes et al. (5) (A) or at http://www.shigen.nig.ac.jp/ecoli/pec/index.jsp (B).