Journal article
Maxicircle genomic organization and editing of an ATPase subunit 6 RNA in Trypanosoma cruzi
Molecular and biochemical parasitology, Vol.76(1), pp.267-278
1996
DOI: 10.1016/0166-6851(95)02565-0
PMID: 8920012
Abstract
The DNA sequence of a 5736-nucleotide (nt)
Trypanosoma cruzi maxicircle fragment was determined. Sequence comparisons indicate that its 5′ terminus is the homologue of the downstream portion of the NADH dehydrogenase subunit 7 gene and that its 3′ region is homologous to the maxicircle unidentified reading frame II gene. The region between these two gene segments contains six additional genes that encode mitochondrial proteins, including ATPase subunit 6 (A6). Comparison of the A6 maxicircle DNA sequence with that of an A6 cDNA indicates that the A6 RNA is extensively edited throughout its length. A 49-nt sequence that could serve as template for transcription of a guide RNA for editing a segment of the A6 RNA was found in one of 24 minicircle variable regions sequenced. Moreover, the presence of an RNA having this sequence was demonstrated in an RNAse protection assay. This is the first identification of a guide RNA template in a
T. cruzi minicircle. Taken together, our findings suggest that
T. cruzi and
Trypanosoma brucei brucei are phylogenetically closer to each other than they are to
Leishmania tarentolae, despite the relative similarity of the life cycles of the latter and
T. cruzi.
Details
- Title: Subtitle
- Maxicircle genomic organization and editing of an ATPase subunit 6 RNA in Trypanosoma cruzi
- Creators
- Diane E Ochs - University of IowaKeiko Otsu - University of IowaSantuza M.R Teixeira - University of IowaDavid R Moser - University of IowaLouis V Kirchhoff - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Molecular and biochemical parasitology, Vol.76(1), pp.267-278
- Publisher
- Elsevier B.V
- DOI
- 10.1016/0166-6851(95)02565-0
- PMID
- 8920012
- ISSN
- 0166-6851
- eISSN
- 1872-9428
- Language
- English
- Date published
- 1996
- Academic Unit
- Psychiatry; Infectious Diseases; Epidemiology; Internal Medicine
- Record Identifier
- 9984280839502771
Metrics
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