Ontology highlight
ABSTRACT:
SUBMITTER: Riley MA
PROVIDER: S-EPMC45210 | biostudies-other | 1994 Nov
REPOSITORIES: biostudies-other
Proceedings of the National Academy of Sciences of the United States of America 19941101 23
We examined DNA sequence polymorphism for the colicin gene clusters of seven ColE1 and six ColIa plasmids obtained from natural isolates of Escherichia coli. These gene clusters harbor levels of nucleotide diversity ranging from 0.006 (ColIa) to 0.054 (ColE1). This level of diversity is similar to that observed for chromosomally encoded E. coli genes. However, the variance associated with these estimates is severalfold higher for the plasmid-encoded genes. This increased variance may be due to t ...[more]