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. 2008 Jul 25;190(18):6170–6177. doi: 10.1128/JB.00508-08

TABLE 2.

Activities of reporter fusions to the tynA and feaB promoters in nsrR and feaR mutantsa

Genotype β-Galactosidase activity (Miller Units)b
Glycerol
Phenylethylamine
Nitrotyramine
tynA-lacZ feaB-lacZ tynA-lacZ feaB-lacZ tynA-lacZ feaB-lacZ
Wild type ND 147 (9) 849 (30) 1,055 (51) 333 (14) 420 (37)
ΔnsrR ND 182 (10) 1024 (81) 1,570 (61) 435 (5) 487 (15)
feaR::kan ND 153 (15) NDc 87 (1) NG NG
ΔnsrR feaR::kan ND 195 (3) ND 104 (7) NG NG
a

Cultures were grown at 30°C in defined medium containing 5 mM phenylethylamine or 40 mM glycerol as the carbon source or containing 11.1 mM glucose as the carbon source with 1.31 mM nitrotyramine as the nitrogen source.

b

Numbers in parentheses are 1 standard deviation. Units are as defined by Miller (25). ND, not detectable (<2 units μmol/min/mg protein). NG, no growth.

c

Growth of the feaR mutant on phenylethylamine was severely impaired.