Abstract
The nucleotide sequence of trpA of Klebsiella aerogenes is presented and compared with the trpA sequences of Salmonella typhimurium and Escherichia coli. The majority of the approximately 200 differences between each pair of trpA's are single nucleotide pair changes that do not alter the amino acid sequence. Codon usage conforms to the general patterns revealed by examination of other prokaryotic gene sequences. However, codon usage in K. aerogenes trpA reflects the high G+C content of the genome of this organism. The DNA sequences just beyond trpA, the presumed transcription termination region, are also compared for the three species. Perusal of these sequences indicates that the secondary structure of the transcript segment just beyond trpA has been preserved, while the primary sequence has diverged appreciably.
MeSH Terms
Amino Acid Sequence
Base Sequence
Codon
DNA Restriction Enzymes
DNA, Bacterial
Escherichia coli/genetics
Genes
Klebsiella pneumoniae/genetics
Nucleic Acid Conformation
Operon
Salmonella typhimurium/genetics
Species Specificity
Transcription, Genetic
Chemicals
Codon
DNA, Bacterial
DNA Restriction Enzymes
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Nichols B P
Blumenberg M
Yanofsky C
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