Microorganisms encounter acid stress during multiple bioprocesses. Microbial species have
therefore developed a variety of resistance mechanisms. The damage caused by acidic …

Diverse mechanisms for pH sensing and cytoplasmic pH homeostasis enable most bacteria
to tolerate or grow at external pH values that are outside the cytoplasmic pH range they must …

Gram-negative bacteria characteristically are surrounded by an additional membrane layer,
the outer membrane. Although outer membrane components often play important roles in …

Microorganisms that have a pH optimum for growth of less than pH 3 are termed
'acidophiles'. To grow at low pH, acidophiles must maintain a pH gradient of several pH units …

Background Acidithiobacillus ferrooxidans is a major participant in consortia of
microorganisms used for the industrial recovery of copper (bioleaching or biomining). It is a …

Of all the molecular determinants for growth, the hydronium and hydroxide ions are found
naturally in the widest concentration range, from acid mine drainage below pH 0 to soda …

The widely distributed Acidithiobacillus ferrooxidans (A. ferrooxidans) lives in extremely
acidic conditions by fixing CO 2 and nitrogen, and by obtaining energy from Fe 2+ oxidation …

Concrete corrosion is one of the most significant problems affecting valuable sewer
infrastructure on a global scale. This problem occurs in the aerobic zone of the sewer, where …

Microbial solubilizing of metals in acid environments is successfully used in industrial
bioleaching of ores or biomining to extract metals such as copper, gold, uranium and others …

ABSTRACT A high-molecular-weight c-type cytochrome, Cyc2, and a putative 22-kDa c-type
cytochrome were detected in the membrane fraction released during spheroplast formation …