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American Society for Microbiology, Applied and Environmental Microbiology, 10(67), p. 4914-4918, 2001

DOI: 10.1128/aem.67.10.4914-4918.2001

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Availability of glutamate and arginine during acid challenge determines cell density-dependent survival phenotype of Escherichia coli strains.

Journal article published in 2001 by Shenghui Cui, Jianghong Meng, Arvind A. Bhagwat
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

ABSTRACT The cell density-dependent acid sensitivity phenotypes of Escherichia coli strains K-12 and O157:H7 were examined with reference to three possible mechanisms of acid resistance. There was no evidence of any diffusible substance released from dead cells which could influence the cell density-dependent acid survival phenotype. Instead, cell density-dependent acid survival phenotype was associated with induction of glutamate- and arginine-decarboxylase acid survival pathways and concomitant availability of glutamate and arginine during acid challenge.