Transcription profiling of Salmonella enterica serotype SL1344 wildtype, pSf-R27sfh and pSf-R27 at stationary and exponential growth phases, to investigate the role of the Sfh protein encoded by transmissible plasmids and involved in human typhoid

ABSTRACT: The Sfh protein is encoded by self-transmissible plasmids involved in human typhoid and is closely related to the global regulator H-NS. We have found that Sfh provides a stealth function that allows the plasmids to be transmitted to new bacterial hosts with minimal effects on their fitness. Introducing the plasmid without the sfh gene imposes a mild H-NS- phenotype and a severe loss of fitness due to titration of the cellular pool of H-NS by the A+T-rich plasmid. This stealth strategy seems to be used widely to aid horizontal DNA transmission and has important implications for bacterial evolution.

ORGANISM(S): Salmonella enterica serotype Typhimurium

SUBMITTER: Matloob Qureshi 

PROVIDER: E-SGRP-7 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress