1887

Abstract

Paratuberculosis (Johne's disease) poses a significant economic problem to beef, dairy and sheep industries worldwide, and is caused by subspecies . In this study, 2D PAGE was used as a tool to investigate the virulent state of subsp. , incorporating the technique of beating the organism with zirconium/silica beads to provide a comprehensive representation of its proteome. A direct comparison of the proteomes of subsp. scraped from the terminal ileum of ovine paratuberculosis cases, and the identical strain grown , is presented. These analyses identified a set of 10 proteins whose expression is upregulated during natural infection: 1-pyrroline-5-carboxylate dehydrogenase (RocA), a putative acyl-CoA dehydrogenase (FadE14), 2-methylcitrate dehydratase (2-mcd), arginosuccinate synthase (ArgG), universal stress protein (usp), 30S ribosomal protein S2 (RpsB), peptidyl-prolyl - isomerase (PpiA), luciferase-like monooxygenase (lmo), thiosulfate sulfurtransferase (SseA) and ATP-dependent Clp protease (ClpB). Most of the proteins identified do not have obviously related functions; however, ArgG and RocA function in the same pathway, and may have a concerted action for energy production .

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2007-01-01
2019-10-14
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