doi: 10.1016/0022-2836(86)90129-4.
Complete nucleotide sequence of the topA gene encoding Escherichia coli DNA topoisomerase I
- PMID: 3029379
- DOI: 10.1016/0022-2836(86)90129-4
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Complete nucleotide sequence of the topA gene encoding Escherichia coli DNA topoisomerase I
J Mol Biol.
.
Abstract
The nucleotide sequence of a 4071 base-pair long segment containing the gene topA encoding Escherichia coli DNA topoisomerase I and its flanking regions has been determined. The gene encodes a total of 864 amino acids from the ATG start to a TAA termination codon, of which the first f-Met appears to be removed after translation; the calculated molecular weight of the translated protein is 97,413. Mapping of promoters by deletion of sequences upstream from the ATG initiation codon indicates the existence of at least two promoters that direct transcription into topA.
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