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© Pierre Gounon
Entrée de Listeria dans une cellule épithéliale (Grossissement X 10000). Image colorisée.
Publication : FEMS microbiology letters

Characterisation of a new operon encoding a Zur-like protein and an associated ABC zinc permease in Listeria monocytogenes

Team: Bacteria-Cell Interactions
Member: Pascale Cossart
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in FEMS microbiology letters - 01 May 1999

Dalet K, Gouin E, Cenatiempo Y, Cossart P, Héchard Y

Link to Pubmed [PMID] – 10234828

FEMS Microbiol. Lett. 1999 May;174(1):111-6

Metal ions uptake is mainly studied for iron, as it has often been implicated in bacterial virulence. Although Listeria monocytogenes virulence is expected to be controlled by the iron availability, little is known about such an uptake and its regulation. We describe the analysis of the first operon involved in metal ions uptake in L. monocytogenes. Its three ORFs encode respectively (1) an ABC protein, likely implicated in zinc uptake, (2) a hydrophobic membrane protein, generally associated with ABC proteins and (3) a ferric uptake regulator-like protein, that we named zinc uptake regulator, as it shows strong homologies with the zinc uptake regulator, a regulator of the zinc homeostasis in Bacillus subtilis. The expression of this operon is regulated by the zinc concentration.