Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/103501
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dc.contributor.authorSwarup, Sanjayen
dc.contributor.authorRavichandran, Ayshwaryaen
dc.contributor.authorRamachandran, Malarmathyen
dc.contributor.authorSuriyanarayanan, Tanujaaen
dc.contributor.authorWong, Chui Chingen
dc.date.accessioned2015-06-08T05:05:27Zen
dc.date.accessioned2019-12-06T21:14:04Z-
dc.date.available2015-06-08T05:05:27Zen
dc.date.available2019-12-06T21:14:04Z-
dc.date.copyright2015en
dc.date.issued2015en
dc.identifier.citationRavichandran, A., Ramachandran, M., Suriyanarayanan, T., Wong, C. C., & Swarup, S. (2015). Global regulator morA affects virulence-associated protease secretion in pseudomonas aeruginosa PAO1. PLOS One, 10(4), e0123805-.en
dc.identifier.issn1932-6203en
dc.identifier.urihttps://hdl.handle.net/10356/103501-
dc.identifier.urihttp://hdl.handle.net/10220/25829en
dc.description.abstractBacterial invasion plays a critical role in the establishment of Pseudomonas aeruginosa infection and is aided by two major virulence factors – surface appendages and secreted proteases. The second messenger cyclic diguanylate (c-di-GMP) is known to affect bacterial attachment to surfaces, biofilm formation and related virulence phenomena. Here we report that MorA, a global regulator with GGDEF and EAL domains that was previously reported to affect virulence factors, negatively regulates protease secretion via the type II secretion system (T2SS) in P. aeruginosa PAO1. Infection assays with mutant strains carrying gene deletion and domain mutants show that host cell invasion is dependent on the active domain function of MorA. Further investigations suggest that the MorA-mediated c-di-GMP signaling affects protease secretion largely at a post-translational level. We thus report c-di-GMP second messenger system as a novel regulator of T2SS function in P. aeruginosa. Given that T2SS is a central and constitutive pump, and the secreted proteases are involved in interactions with the microbial surroundings, our data broadens the significance of c-di-GMP signaling in P. aeruginosa pathogenesis and ecological fitness.en
dc.format.extent17 p.en
dc.language.isoenen
dc.relation.ispartofseriesPLOS Oneen
dc.rights© 2015 Ravichandran et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en
dc.subjectDRNTU::Science::Biological sciences::Microbiology::Bacteriaen
dc.titleGlobal regulator morA affects virulence-associated protease secretion in pseudomonas aeruginosa PAO1en
dc.typeJournal Articleen
dc.contributor.organizationSingapore Centre for Environmental Life Sciences Engineeringen
dc.identifier.doi10.1371/journal.pone.0123805en
dc.description.versionPublished versionen
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item.grantfulltextopen-
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