Genomic Adaptation to Acidic Environment: Evidence from<i>Helicobacter pylori</i>

Abstract excerpt

The origin of new functions is fundamental in understanding evolution, and three processes known as adaptation, preadaptation, and exaptation have been proposed as possible evolutionary pathways leading to the origin of new functions. Here we examine the origin of an acid resistance mechanism in the mammalian gastric pathogen Helicobacter pylori, with reference to these three evolutionary pathways. The mechanism...

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