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  • Title: Biochemical identification and phylogenetic relationships in free-living amoebas of the genus Naegleria.
    Author: Pernin P, Cariou ML, Jacquier A.
    Journal: J Protozool; 1985 Nov; 32(4):592-603. PubMed ID: 4067875.
    Abstract:
    Using isoelectric focusing, the zymograms of 23 pathogenic and nonpathogenic Naegleria strains were studied for the activity of 16 enzymes. Certain enzymes (lactate dehydrogenase, L-threonine dehydrogenase, superoxide dismutase, acid phosphatase, malic enzyme, and leucine aminopeptidase) proved particularly useful from a practical point of view as they allow easy and reliable identification of pathogenic N. fowleri and N. australiensis as well as nonpathogenic N. lovaniensis strains. Genetic interpretation of these zymograms gave estimates of genetic distances that largely confirmed the taxonomic position of the Naegleria species. In addition, the genetic data suggest that there are two main phylogenetic groups in the genus Naegleria.
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