The nucleotide sequence was determined of a region of 1450 base pairs encompassing the fimA gene for the subunit of type 1 fimbriae of Escherichia coli as well as flanking regions containing potential regulator sequences. The 'translated' protein contains a 23-residue signal peptide; the processed fimbrial subunit consists of 158 amino acid residues yielding a relative molecular mass of 15706. The elucidated sequence shows significant homology with those of other E. coli fimbrial proteins.
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Per Klemm (1984) studied this question.
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