Role of sigma(B) in adaptation of Listeria monocytogenes to growth at low temperature.
The activity of sigma(B) in Listeria monocytogenes is stimulated by high osmolarity and is necessary for efficient uptake of osmoprotectants. Here we demonstrate that, during cold shock, sigma(B) contributes to adaptation in a growth phase-dependent manner and is necessary for efficient accumulation of betaine and carnitine as cryoprotectants.
Becker
L A
LA
Department of Food Science and Technology, University of Nebraska, Lincoln, Nebraska 68583-0919, USA.
Evans
S N
SN
Hutkins
R W
RW
Benson
A K
AK
D000222:Adaptation, Physiological; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism*; D001622:Betaine / Q000378:metabolism; D002331:Carnitine / Q000378:metabolism; D003080:Cold Temperature; D008089:Listeria monocytogenes / Q000254:growth & development* / Q000378:metabolism; D012808:Sigma Factor / Q000235:genetics / Q000378:metabolism*
D001426:Bacterial Proteins; C079011:SigB protein, Bacteria; D012808:Sigma Factor; D001622:Betaine; D002331:Carnitine