Ra. Hull et Si. Hull, NUTRITIONAL-REQUIREMENTS FOR GROWTH OF UROPATHOGENIC ESCHERICHIA-COLIIN HUMAN URINE, Infection and immunity, 65(5), 1997, pp. 1960-1961
Enrichment with D-cycloserine was used to identify Escherichia coli au
xotrophic mutants that exhibited limited growth in human urine. Bacter
ial synthesis of guanine, arginine, and glutamine was found to be requ
ired for optimal growth in urine, Mutants that required leucine, methi
onine, serine, phenylalanine, or proline also exhibited reduced growth
in urine, Several other nutritional mutants, including nicotinamide a
uxotrophs, which are found frequently among cystitis isolates, exhibit
ed normal growth in urine.