Evidence that the entire length of a kinetoplast DNA minicircle is transcribed in Trypanosoma cruzi.

Abstract:

:A 1.3 kb cDNA (cDNA52) was derived from Trypanosoma cruzi trypomastigote mRNA. Using single stranded probes in Northern blots, we identified the putative coding strand of cDNA52. In addition, a minor band was detected in RNA from epimastigotes that was absent in RNA from trypomastigotes. Nucleotide sequence analysis revealed that cDNA52 was highly homologous to T. cruzi kinetoplast DNA minicircle sequences. All four conserved regions of T. cruzi minicircles were identified in cDNA52. Using several criteria, we demonstrated that the hybridization signals were not caused by contaminating minicircle DNA in the RNA preparations. The data provide direct evidence for the unprecedented finding that the entire length of a kDNA minicircle is transcribed in T. cruzi.

journal_name

Mol Microbiol

journal_title

Molecular microbiology

authors

Thertulien R,Harth G,Haidaris CG

doi

10.1111/j.1365-2958.1991.tb01841.x

subject

Has Abstract

pub_date

1991-01-01 00:00:00

pages

207-15

issue

1

eissn

0950-382X

issn

1365-2958

journal_volume

5

pub_type

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