aprABC: a Mycobacterium tuberculosis complex-specific locus that modulates pH-driven adaptation to the macrophage phagosome.
aprABC: a Mycobacterium tuberculosis complex-specific locus that modulates pH-driven adaptation to the macrophage phagosome.
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APRABC:结核分枝杆菌的复杂特异性基因座,可调节pH驱动的巨噬细胞吞噬体。
DOI:
10.1111/j.1365-2958.2011.07601.x
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发表时间:
2011-05
影响因子:
3.6
通讯作者:
Russell DG
中科院分区:
文献类型:
--
作者:
Abramovitch RB;Rohde KH;Hsu FF;Russell DG
Following phagocytosis by macrophages, Mycobacterium tuberculosis (Mtb) senses the intracellular environment and remodels its gene expression for growth in the phagosome. We have identified an Acid and Phagosome Regulated (aprABC) locus that is unique to the Mtb complex and whose gene expression is induced during growth in acidic environments in vitro and in macrophages. Using the aprA promoter, we generated a strain that exhibits high levels of inducible fluorescence in response to growth in acidic medium in vitro and in macrophages. aprABC expression is dependent on the two-component regulator phoPR, linking phoPR signaling to pH sensing. Deletion of the aprABC locus causes defects in gene expression that impact aggregation, intracellular growth, and the relative levels of storage and cell wall lipids. We propose a model where phoPR senses the acidic pH of the phagosome and induces aprABC expression to fine-tune processes unique for intracellular adaptation of Mtb complex bacteria.
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影响因子:
14.9
作者:
Reddy TB;Riley R;Wymore F;Montgomery P;DeCaprio D;Engels R;Gellesch M;Hubble J;Jen D;Jin H;Koehrsen M;Larson L;Mao M;Nitzberg M;Sisk P;Stolte C;Weiner B;White J;Zachariah ZK;Sherlock G;Galagan JE;Ball CA;Schoolnik GK
通讯作者:
Schoolnik GK
影响因子:
3.5
作者:
Cormack, BP;Valdivia, RH;Falkow, S
通讯作者:
Falkow, S
影响因子:
3.2
作者:
Pinto, Rachel;Harrison, Joseph S.;Leyh, Thomas S.
通讯作者:
Leyh, Thomas S.
影响因子:
4.8
作者:
Alberto Flores-Valdez, Mario;Morris, Rowan P.;Schoolnik, Gary K.
通讯作者:
Schoolnik, Gary K.
影响因子:
56.9
作者:
Ramakrishnan, L;Federspiel, NA;Falkow, S
通讯作者:
Falkow, S