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Crithidia spp.: Structural comparison of polysaccharides for taxonomic significance

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1016/0014-4894(82)90058-3
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Affiliation
  1. National Research Council of Canada. Prairie Regional Laboratory
FormatText, Article
SubjectCrithidia deanei; C. fasciculata; C. harmosae; C. luciliae; Crithidia sp.; protozoa, flagellated; polysaccharides, structure
Abstract
The chemical structures of polysaccharide components of cells of several Crithidia species have been partially elucidated. The structures have been used as criteria to evaluate evolutionary lines previously proposed for species of Crithidia and Herpetomonas and for Trypanosoma cruzi. In accord with the suggestion that Crithidia and Herpetomonas are closely interrelated, all species investigated synthesize a linear (1→2)-linked β-d-mannopyranan and a heteropolysaccharide. These differ from T. cruzi polysaccharide, which contains α-d-mannopyranosyl structures and likely indicates a separate evolutionary route for this flagellate. Crithidia fasciculata, Crithidia harmosae, and Crithidia luciliae form a closely knit group since they form arabinogalactans with related structures. The similarity is particularly close between arabinogalactans of C. fasciculata and C. harmosae whose ¹³C nuclear magnetic resonance spectra show a high degree of resemblance. An unnamed Crithidia sp. contains polysaccharides with fucose and xylose units, intermediate between those of Crithidia deanei, which gave glucose and fucose on hydrolysis, and Herpetomnas samuelpessoai, which gave glucuronic acid and xylose.
Publication date
PublisherElsevier
In
  • Experimental Parasitology 53, no. 2 (April 1982): 170–178.
LanguageEnglish
Peer reviewedYes
Identifier0014489482900583
NRCC-18658
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Record created2023-11-16
Record modified2023-11-16
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