TABLE 2.

Correlation between heme-regulated genes in S. aureus ΔhrtA and stress responses

Responsea	% Similarityb
Cold shock	15.3
Heat shock	2.6
SOS	10.6
Stringent	37.4
Acid (pH 4.0)	11.3
Alkaline (pH 10.0)	28.8
Manganese starvation	0.3
Zinc starvation	6.1

^aFrom unpublished data and data published in references 1 and 7.

^bPercentage of transcripts altered in abundance during the given response which are also regulated in S. aureus ΔhrtA exposed to heme.