Journal
TRENDS IN MICROBIOLOGY
Volume 20, Issue 6, Pages 299-306Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.tim.2012.03.005
Keywords
prenylation; farnesylation; polyubiquitination; phosphatidylinositol; F-box; AnkB; proteasome
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Funding
- Public Health Service Awards from NIAID [R01AI43965, R01AI069321]
- commonwealth of Kentucky Research Challenge Trust Fund
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Legionella pneumophila proliferates within various protists and metazoan cells, where a cadre of similar to 300 effectors is injected into the host cell by the defect in organelle trafficking/intracellular multiplication (Dot/Icm) type IVB translocation system. Interkingdom horizontal gene transfer of genes of protists and their subsequent convergent evolution to become translocated effectors has probably enabled L. pneumophila to adapt to the intracellular life within various protists and metazoan cells through exploitation of evolutionarily eukaryotic processes, such as endoplasmic reticulum-to-Golgi vesicle traffic, phosphoinositol metabolism, AMPylation, deAMPylation, prenylation, polyubiquitination, proteasomal degradation and cytosolic amino- and oligo-peptidases. This is highlighted by the ankyrin B (AnkB) F-box effector that exploits multiple conserved eukaryotic machineries to generate high levels of free amino acids as sources of carbon and energy essential for intracellular proliferation in protists and metazoan cells and for manifestation of pulmonary disease in mammals.
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