title: Comparative Metabolism of Free-living Bodo saltans and Parasitic Trypanosomatids.
abstract: Comparison of the genomes of free-living Bodo saltans and those of parasitic trypanosomatids reveals that the transition from a free-living to a parasitic life style has resulted in the loss of approximately 50% of protein-coding genes. Despite this dramatic reduction in genome size, B. saltans and trypanosomatids still share a significant number of common metabolic traits: glycosomes; a unique set of the pyrimidine biosynthetic pathway genes; an ATP-PFK which is homologous to the bacterial PPi -PFKs rather than to the canonical eukaryotic ATP-PFKs; an alternative oxidase; three phosphoglycerate kinases and two GAPDH isoenzymes; a pyruvate kinase regulated by fructose-2,6-bisphosphate; trypanothione as a substitute for glutathione; synthesis of fatty acids via a unique set of elongase enzymes; and a mitochondrial acetate:succinate coenzyme A transferase. B. saltans has lost the capacity to synthesize ubiquinone. Among genes that are present in B. saltans and lost in all trypanosomatids are those involved in the degradation of mureine, tryptophan and lysine. Novel acquisitions of trypanosomatids are components of pentose sugar metabolism, pteridine reductase and bromodomain-factor proteins. In addition, only the subfamily Leishmaniinae has acquired a gene for catalase and the capacity to convert diaminopimelic acid to lysine.
authors.affiliation: de Duve Institute, Université Catholique de Louvain, Brussels, B-1200, Belgium.
authors.forename: Fred R
authors.initials: FR
authors.lastname: Opperdoes
authors.affiliation: Life Science Research Centre, Faculty of Science, University of Ostrava, Ostrava, 710 00, Czech Republic.
authors.forename: Anzhelika
authors.initials: A
authors.lastname: Butenko
authors.affiliation: Life Science Research Centre, Faculty of Science, University of Ostrava, Ostrava, 710 00, Czech Republic.|Biology Centre, Institute of Parasitology, Czech Academy of Sciences, České Budějovice (Budweis), 370 05, Czech Republic.|A.A. Kharkevich Institute for Information Transmission Problems, Russian Academy of Sciences, Moscow, 127 051, Russia.
authors.forename: Pavel
authors.initials: P
authors.lastname: Flegontov
authors.affiliation: Life Science Research Centre, Faculty of Science, University of Ostrava, Ostrava, 710 00, Czech Republic.|Biology Centre, Institute of Parasitology, Czech Academy of Sciences, České Budějovice (Budweis), 370 05, Czech Republic.|Faculty of Science, Institute of Environmental Technologies, University of Ostrava, Ostrava, 710 00, Czech Republic.
authors.forename: Vyacheslav
authors.initials: V
authors.lastname: Yurchenko
authors.affiliation: Biology Centre, Institute of Parasitology, Czech Academy of Sciences, České Budějovice (Budweis), 370 05, Czech Republic.|Faculty of Science, University of South Bohemia, České Budějovice (Budweis), 370 05, Czech Republic.|Canadian Institute for Advanced Research, Toronto, ON, M5G 1Z8, Canada.
authors.forename: Julius
authors.initials: J
authors.lastname: Lukeš
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D001419:Bacteria / Q000235:genetics / Q000378:metabolism; D050260:Carbohydrate Metabolism; D003067:Coenzymes / Q000378:metabolism; D004286:Dolichols / Q000378:metabolism; D004875:Ergosterol / Q000096:biosynthesis; D056890:Eukaryota / Q000235:genetics / Q000378:metabolism; D005492:Folic Acid / Q000378:metabolism; D017125:Genes, Protozoan / Q000235:genetics; D005943:Gluconeogenesis; D006019:Glycolysis; D016830:Kinetoplastida / Q000201:enzymology / Q000235:genetics* / Q000378:metabolism*; D050356:Lipid Metabolism; D008798:Mevalonic Acid / Q000378:metabolism; D008830:Microbodies / Q000378:metabolism; D008928:Mitochondria / Q000201:enzymology / Q000378:metabolism; D010088:Oxidoreductases / Q000378:metabolism; D010427:Pentose Phosphate Pathway; D020675:Peroxisomes / Q000378:metabolism; D010743:Phospholipids / Q000378:metabolism; D011073:Polyamines / Q000378:metabolism; D017368:Protein Prenylation; D015800:Protozoan Proteins / Q000235:genetics; D011687:Purines / Q000096:biosynthesis / Q000378:metabolism; D011743:Pyrimidines / Q000096:biosynthesis / Q000378:metabolism; D017382:Reactive Oxygen Species; D014351:Trypanosomatina / Q000201:enzymology / Q000235:genetics* / Q000378:metabolism*; D014451:Ubiquinone / Q000378:metabolism; D014508:Urea / Q000378:metabolism; D014815:Vitamins / Q000378:metabolism
chemical_list: D000596:Amino Acids; D003067:Coenzymes; D004286:Dolichols; D010743:Phospholipids; D011073:Polyamines; D015800:Protozoan Proteins; D011687:Purines; D011743:Pyrimidines; D017382:Reactive Oxygen Species; D014815:Vitamins; D014451:Ubiquinone; D014508:Urea; D005492:Folic Acid; D010088:Oxidoreductases; C030986:pyrimidine; D008798:Mevalonic Acid; C030985:purine; D004875:Ergosterol
keywords: Leishmania; Leptomonas; Phytomonas; Trypanosoma; adaptation; lateral gene transfer; parasitism