Abstract
The nucleotide sequence of a 714-bp DNA fragment containing the enterotoxic Escherichia coli (ETEC) adhesive factor 8786 structural gene, designated nfaA, revealed an open reading frame of 498 bp encoding a polypeptide of 166 amino acids. Primer-extension experiments showed that the nfaA gene is within a single transcription unit. No homology was found with the ETEC adhesive factors already sequenced. In contrast, a homology with Salmonella enteritidis fimbrin SEF 14 was observed.
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