TABLE 4.

Concentrations of MucA′ and MucB proteins with expression from a P_tac::mucA′B hybrid operon^a

IPTG (μM)	Concn (molecules/cell)b
	MucA′	MucB
0	1,300	350
10	6,000	1,600
50	51,000	14,000
100	90,000	19,500
500	110,000	21,000

^aStrain GY9427 (lexA⁺ lacY) carrying plasmid pGY9411 (P_tac::mucA′B) was grown in LBT to an OD₆₅₀ of 0.2 and incubated for an additional 90 min in the same medium supplemented with IPTG at the indicated concentrations. 

^bSee Table 3, footnote b.