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Microb Pathog. 1987 Feb;2(2):147-53.

Nucleotide sequence analysis of the structural genes for Shiga-like toxin I encoded by bacteriophage 933J from Escherichia coli.

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Department of Microbiology, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814-4799.


A nucleotide sequence analysis was performed on the Shiga-like toxin I genes previously cloned from the Escherichia coli bacteriophage 933J. Two structural genes designated slt-I A and slt-I B were found to be oriented on a single transcriptional unit with slt-I A preceding slt-I B. A 12 base pair gap separated the in-phase open reading frames of slt-I A and slt-I B. Putative ribosome binding sites were identified 5' to both the slt-I A and slt-I B genes. Translation of the SLT-I nucleotide sequence revealed that both the A and B subunits were synthesized with signal peptides. The molecular weight calculated for the mature A subunit was 32,211 while the molecular weight of the mature B subunit was 7690.

[Indexed for MEDLINE]

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