Table 1 Bacterial strains used in this study.

Y. pestis A1122

CIP^S, DOX^S, GEN^S

pMT1⁺, pPCP1^+(*), pCD1⁻

gyrA

Wild Type

³⁷

Y. pestis S1037

CIP^NS, DOX^S, GEN^S

pMT1⁺, pPCP1^+(*), pCD1⁻

gyrA

C249 ►A

This work

B. anthracis Sterne/pUTE29

PEN^S, CIP^S, DOX^NS

pX01⁺, pX02⁻, pUTE29⁺

tetL

NA

¹⁹

B. anthracis 411A2

PEN^S, CIP^NS, DOX^S

pX01⁺, pX02⁻

gyrA, parC

C254 ►T, C242 ►T

¹⁹

B. anthracis UT308

PEN^R, CIP^S, DOX^S

pX01^+(#), pX02⁻

gyrA

Wild Type

^{71, 72}