Mutations in the csgD promoter associated with variations in curli expression in certain strains of Escherichia coli O157:H7

Applied and Environmental Microbiology
Gaylen A UhlichRobert O Elder

Abstract

Single-base-pair csgD promoter mutations in human outbreak Escherichia coli O157:H7 strains ATCC 43894 and ATCC 43895 coincided with differential Congo red dye binding from curli fiber expression. Red phenotype csgD::lacZ promoter fusions had fourfold-greater expression than white promoter fusions. Cloning the red variant csgDEFG operon into white variants induced the red phenotype. Substrate utilization differed between red and white variants.

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Citations

Jun 16, 2005·Folia Microbiologica·E SzabóT Pál
Dec 4, 2003·Research in Microbiology·Ulrich Gerstel, Ute Römling
Jun 22, 2002·FEMS Microbiology Letters·Uri GophnaEliora Z Ron
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