Peptide transporter YjiY influences the expression of the virulence gene mgtC to regulate biofilm formation in Salmonella

Chandra, Kasturi ; Garai, Preeti ; Chatterjee, Jayanta ; Chakravortty, Dipshikha (2017) Peptide transporter YjiY influences the expression of the virulence gene mgtC to regulate biofilm formation in Salmonella FEMS Microbiology Letters, 364 (24). ISSN 1574-6968

[img] PDF
5MB

Official URL: http://doi.org/10.1093/femsle/fnx236

Related URL: http://dx.doi.org/10.1093/femsle/fnx236

Abstract

Formation of a biofilm is one of the coping strategies of Salmonella against antimicrobial environmental stresses including nutrient starvation. However, the channeling of the starvation cue towards biofilm formation is not well understood. Our study shows that a carbon starvation gene, yjiY, coding for a peptide transporter, influences the expression of a virulence-associated gene mgtC in Salmonella to regulate biofilm formation. We demonstrate here that the mutant strain ΔyjiY is unable to form a biofilm due to the increased expression of mgtC. The upregulation of mgtC in the ΔyjiY strain correlates with the downregulation of the biofilm master regulator gene, csgD, and reduced levels of ATP. Our work further indicates that a yjiY-encoded peptide transporter may regulate the expression of mgtC by transporting proline peptides.

Item Type:Article
Source:Copyright of this article belongs to Oxford University Press.
Keywords:Biofilm; Salmonella; Peptide Transporter; mgTc; Proline; Starvation.
ID Code:118257
Deposited On:19 May 2021 11:28
Last Modified:02 Feb 2023 05:22

Repository Staff Only: item control page