نتایج جستجو برای: and acidic environments
تعداد نتایج: 16846638 فیلتر نتایج به سال:
Salmonella PhoQ is a histidine kinase with a periplasmic sensor domain (PD) that promotes virulence by detecting the macrophage phagosome. PhoQ activity is repressed by divalent cations and induced in environments of acidic pH, limited divalent cations, and cationic antimicrobial peptides (CAMP). Previously, it was unclear which signals are sensed by salmonellae to promote PhoQ-mediated virulen...
A 1.1 × 106 Da acidic exopolysaccharide (EPS) was purified from an extremely halophilic archaeon Haloarcula hispanica ATCC33960 with a production of 30 mg L-1 when grown in AS-168 medium, which mainly composed of mannose and galactose with a small amount of glucose in a molar ratio of 55.9 : 43.2 : 0.9. Two glycosyltransferase genes (HAH_1662 and HAH_1667) were identified to be responsible for ...
Understanding the Tolerance of Different Strains of Human Pathogenic Bacteria to Acidic Environments
It is known that many bacteria are susceptible to low pH, but it less clear how the acid nature influences this susceptibility. The objective of work was evaluate susceptibility selected different pH conditions and understand if their tolerance affected by type (organic vs inorganic) in media acidification. Strains species human pathogenic were cultivated at acidic conditions, using organic or ...
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