Identification of Dihydrouridine in Escherichia Coli

Isolation, Identification and in vitro Susceptibility of Avian Escherichia coli to Selected Fluoroquinolones

IDENTIFICATION OF 4-THIOURIDINE IN ESCHERICHIA COLI tRNMer AND tRNAiyr

Uridine is uniquely conserved at position B in elongator tRN As and binds to A 14 to form a reversed Hoogsteen base pair which folds the dihydrouridine loop back into the core of the L-shaped molecule. On the basis of IH NMR studies, Hurd and co-workers (Hurd, R. E., Robillard, G. T., and Reid, B. R. (1977) Biochemistry 16,2095-2100) concluded that the interaction between positions Band 14 is a...

Identification of β-Lactamase-Negative-Ampicillin Resistance Strains of Escherichia coli in 150 Isolates from Urinary Tract Infection and Fecal Flora in Kerman

β-lactamases are enzymes which inactivate the β-lactam antibacterial agents and are one of the major causes of resistance against these drugs. Recently there are reports on the isolation of bacteria which does not produce β-lactamase, but are resistant to penicillins. In the present study, β-laclamase production was determined using iodometric method on 150 ampicillin resistance Escherichia col...

Identification and Purification of F11 Fimbriae on Avian Pathogenic Escherichia coli

Identification of shiga toxin producing Escherichia coli O157:H7 in raw cow milk samples from dairy farms in Mashhad using multiplex PCR assay

In this study 130 bulk tank milk samples which were delivered to the Pegah Pasturisation Factory inMashhad were collected randomly during the summer months. Samples were firstly enriched in modifiedtrypticase soy broth containing novobiocin, followed by plating onto sorbitol MacConkey agar supplementedwith cefixime and potassium tellurite for isolation of Escherichia coli O157:H7. Consequently ...