Enzyme polymorphisms in ECOR

The ECOR electrophoretic types are enzyme allele (allozyme) profiles of the 72 ECOR strains based on the results of multilocus enzyme electrophoresis (Selander et al., 1986). The data for 35 enzymes were generated by Dominique Caugant in Robert Selander's laboratory at the University of Rochester (Selander et al., 1987). The last four columns (page 2) are allozymes of four esterase loci that were assayed by Goullet and Picard (Goullet & Picard, 1989). The 38-locus multilocus genotypes (EST was not included) were used to construct a dendrogram based on the neighbor joining algorithm (Herzer et al., 1990).

ECOR Electrophoretic types

Enzyme polymorphism and genetic diversity

References

Goullet, P. & Picard., B. (1989). Comparative electrophoretic polymorphism of esterases and other enzymes in Escherichia coli. Journal of General Microbiology 135, 135-143.

Herzer, P. J., Inouye, S., Inouye, M. & Whittam,T. S. (1990). Phylogenetic distribution of branched RNA-linked multicopy single-stranded DNA among natural isolates of Escherichia coli. Journal of Bacteriology 172, 6175-6181.

Selander, R. K., Caugant, D. A., Ochman, H., Musser, J. M., Gilmour, M. H. & Whittam, T. S. (1986). Methods of multilocus enzyme electrophoresis for bacterial population genetics and systematics. Applied and Environmental Microbiology 51, 873-884.

Selander, R. K., Caugant, D. A. & Whittam, T. S. (1987). Genetic structure and variation in natural populations of Escherichia coli. In Escherichia coli and Salmonella typhimurium: Cellular and Molecular Biology, pp. 1625-1648. Edited by F. C. Neidhardt, J. L. Ingraham, K. B. Low, B. Magasanik, M. Schaechter & H. E. Umbarger.Washington, D.C.: American Society for Microbiology.

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