Issue |
Ann. Parasitol. Hum. Comp.
Volume 66, Number 6, 1991
|
|
---|---|---|
Page(s) | 256 - 258 | |
DOI | https://doi.org/10.1051/parasite/1991666256 | |
Published online | 17 August 2016 |
Mémoire
The kinetoplast DNA structure of Trypanosoma cf. carassii
L’ADN kinétoplastique chez Trypanosoma cf. carassii
1
Institute of Parasitology, Czech Academy of Sciences, Branisovšká 31, 370 05 České Budejovice, Czechoslovakia.
2
Institute of Microbiology, Czech Academy of Sciences, Videñská 1083, 142 20 Praha 4, Czechoslovaquia.
3
Department of Molecular Biology, Faculty of Biology, M. V. Lomonosov State University, 119 899 Moscow, Russia.
Accepted: 23 December 1991
The structure of the kinetoplast DNA (kDNA) network of fish trypanosomes is described for the first time. The kDNA was isolated from lysed cells of trypanosomes grown in culture by differential centrifugation combined with chloroform-isoamyl alcohol extraction. Electron microscopy of spread DNA networks revealed the existence of two kinds of mutually interlocked circular molecules. The maxicircle size was 27.5 ± 2.5 kbp (kilobase pairs) and that of the predominant minicircles 1.9 ± 0.1 kbp.
Résumé
La structure de l’ADN kinétoplastique des trypanosomes de poissons est décrite pour la première fois. L’ADN kinétoplastique a été isolé des cellules de trypanosomes de culture lysées par centrifugation différentielle combinée avec une extraction par chloroforme-isoamyl alcohol. L’étude en microscopie électronique du réseau kinétoplastique étalé a révélé l’existence de deux populations de molécules circulaires d’ADN en réseau concaténaire. La taille des maxicercles était de 27,5 ± 2,5 kb (kilobases) et celles des minicercles prédominants de 1,9 ± 0,1 kb.
Key words: Trypanosoma / Haemoflagellates / Kinetoplast DNA / Maxicircles / Minicircles
Mots clés : Trypanosoma / Hémoflagellés / ADN kinétoplastique / Maxicercles / Minicercles
© Masson, Paris 1991, transferred to Société Française de Parasitologie
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