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Article

Low synonymous site variation at the lacY locus in Escherichia coli suggests the action of positive selection.

Journal of molecular evolution - 1 Feb 1996

Wagner R R, Riley M A

Abstract excerpt

We have determined the nucleotide sequences of seven lacY alleles isolated from natural isolates of Escherichia coli. Nucleotide heterozygosity estimates for this locus were compared to those obtained from previous studies of intraspecific variation at chromosomal loci, revealing that lacY has unusually low synonymous site variation. The average pairwise heterozygosity of synonymous sites (Ks = 0.0112 +/- 0.0100)...

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PMID: 8919858
DOI: 10.1007/BF02198831

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

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