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. 2004 Jul;186(13):4262–4275. doi: 10.1128/JB.186.13.4262-4275.2004

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Copyright © 2004, American Society for Microbiology

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FIG. 3. — The roles of PhoP or PhoP binding regions in phoPR transcription differ during phosphate-limited and phosphate-replete growth. (A) Growth and phoPR expression in LPDM. An arrow marks the induction of APase in phoP⁺ strains MH5562 and MH5559. (B) Growth and phoPR expression in SSG. Filled symbols represent growth; open symbols represent expression of various phoP-lacZ promoter fusions. Circle, MH5562 (JH642 strain; phoP-lacZ); square, MH5565 (phoP strain; phoP-lacZ); triangle, MH5559 (JH642 strain; phoP-lacZ fusion containing a deletion of bp +25 to +92 that removed the 3′ PhoP binding site, phoP_Δ25-92-lacZ); inverted triangle, MH5567 (Δ phoP; phoP_Δ25-92-lacZ); diamond, MH5580 (sigE phoP-lacZ).