Skip to main content
Nucleic Acids Research logoLink to Nucleic Acids Research
. 1985 Aug 26;13(16):5977–5993. doi: 10.1093/nar/13.16.5977

Mapping and 5' end determination of kinetoplast maxicircle gene transcripts from Leishmania tarentolae.

A M Simpson, N Neckelmann, V F de la Cruz, M L Muhich, L Simpson
PMCID: PMC321927  PMID: 2994021

Abstract

Transcripts for six Leishmania tarentolae maxicircle structural genes (cytochrome oxidase subunits I, II and III, cytochrome b, human mitochondrial unidentified reading frames 4 and 5) and several unidentified open reading frames were mapped, and the locations of the 5' ends determined by primer runoff analysis. All genes studied here are transcribed from the same strand as the 12S and 9S ribosomal RNAs except for the cytochrome oxidase subunit I gene. In two cases (ORF3 and ORF4, ORF5 and ORF6), a single transcript covers two contiguous overlapping reading frames. The 5' ends of the RNAs are located 20-64 nt from the putative translation initiation codons. Primary transcripts from a mitochondrial RNA preparation were 5' end-labeled with guanylyltransferase and alpha -32P-GTP; the major labeled species comigrated with the 12S and 9S mitochondrial rRNAs, and in addition there were at least four higher molecular weight labeled species.

Full text

PDF
5977

Images in this article

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Benne R., De Vries B. F., Van den Burg J., Klaver B. The nucleotide sequence of a segment of Trypanosoma brucei mitochondrial maxi-circle DNA that contains the gene for apocytochrome b and some unusual unassigned reading frames. Nucleic Acids Res. 1983 Oct 25;11(20):6925–6941. doi: 10.1093/nar/11.20.6925. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Borst P., Fase-Fowler F., Hoeijmakers J. H., Frasch A. C. Variations in maxi-circle and mini-circle sequences in kinetoplast DNAs from different Trypanosoma brucei strains. Biochim Biophys Acta. 1980 Dec 11;610(2):197–210. doi: 10.1016/0005-2787(80)90001-5. [DOI] [PubMed] [Google Scholar]
  3. Borst P., Weijers P. J., Brakenhoff G. J. Analysis by electron microscopy of the variable segment in the maxi-circle of kinetoplast DNA from Trypanosoma brucei. Biochim Biophys Acta. 1982 Dec 31;699(3):272–280. doi: 10.1016/0167-4781(82)90117-8. [DOI] [PubMed] [Google Scholar]
  4. Hensgens L. A., Brakenhoff J., De Vries B. F., Sloof P., Tromp M. C., Van Boom J. H., Benne R. The sequence of the gene for cytochrome c oxidase subunit I, a frameshift containing gene for cytochrome c oxidase subunit II and seven unassigned reading frames in Trypanosoma brucei mitochondrial maxi-circle DNA. Nucleic Acids Res. 1984 Oct 11;12(19):7327–7344. doi: 10.1093/nar/12.19.7327. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Hoeijmakers J. H., Borst P. RNA from the insect trypanosome Crithidia luciliae contains transcripts of the maxi-circle and not of the mini-circle component of kinetoplast DNA. Biochim Biophys Acta. 1978 Nov 21;521(1):407–411. doi: 10.1016/0005-2787(78)90282-4. [DOI] [PubMed] [Google Scholar]
  6. Hoeijmakers J. H., Snijders A., Janssen J. W., Borst P. Transcription of kinetoplast DNA in Trypanosoma brucei bloodstream and culture forms. Plasmid. 1981 May;5(3):329–350. doi: 10.1016/0147-619x(81)90009-3. [DOI] [PubMed] [Google Scholar]
  7. Hughes D., Simpson L., Kayne P. S., Neckelmann N. Autonomous replication sequences in the maxicircle kinetoplast DNA of Leishmania tarentolae. Mol Biochem Parasitol. 1984 Nov;13(3):263–275. doi: 10.1016/0166-6851(84)90118-x. [DOI] [PubMed] [Google Scholar]
  8. Johnson B. J., Hill G. C., Donelson J. E. The maxicircle of Trypanosoma brucei kinetoplast DNA encodes apocytochrome b. Mol Biochem Parasitol. 1984 Oct;13(2):135–146. doi: 10.1016/0166-6851(84)90108-7. [DOI] [PubMed] [Google Scholar]
  9. Levens D., Ticho B., Ackerman E., Rabinowitz M. Transcriptional initiation and 5' termini of yeast mitochondrial RNA. J Biol Chem. 1981 May 25;256(10):5226–5232. [PubMed] [Google Scholar]
  10. Muhich M. L., Simpson L., Simpson A. M. Comparison of maxicircle DNAs of Leishmania tarentolae and Trypanosoma brucei. Proc Natl Acad Sci U S A. 1983 Jul;80(13):4060–4064. doi: 10.1073/pnas.80.13.4060. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Proudfoot N. J., Shander M. H., Manley J. L., Gefter M. L., Maniatis T. Structure and in vitro transcription of human globin genes. Science. 1980 Sep 19;209(4463):1329–1336. doi: 10.1126/science.6158093. [DOI] [PubMed] [Google Scholar]
  12. Simpson A. M., Simpson L., Livingston L. Transcription of the maxicircle kinetoplast DNA of Leishmania tarentolae. Mol Biochem Parasitol. 1982 Oct;6(4):237–252. doi: 10.1016/0166-6851(82)90057-3. [DOI] [PubMed] [Google Scholar]
  13. Simpson L., Braly P. Synchronization of Leishmania tarentolae by hydroxyurea. J Protozool. 1970 Nov;17(4):511–517. doi: 10.1111/j.1550-7408.1970.tb04719.x. [DOI] [PubMed] [Google Scholar]
  14. Simpson L., Simpson A. G. Kinetoplast RNA of Leishmania tarentolae. Cell. 1978 May;14(1):169–178. doi: 10.1016/0092-8674(78)90311-2. [DOI] [PubMed] [Google Scholar]
  15. Simpson L., Spithill T. W., Simpson A. M. Identification of maxicircle DNA sequences in Leishmania Tarentolae that are homologous to sequences of specific yeast mitochondrial structural genes. Mol Biochem Parasitol. 1982 Oct;6(4):253–264. doi: 10.1016/0166-6851(82)90058-5. [DOI] [PubMed] [Google Scholar]
  16. Stuart K. D., Gelvin S. B. Localization of kinetoplast DNA maxicircle transcripts in bloodstream and procyclic form Trypanosoma brucei. Mol Cell Biol. 1982 Jul;2(7):845–852. doi: 10.1128/mcb.2.7.845. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. de la Cruz V. F., Lake J. A., Simpson A. M., Simpson L. A minimal ribosomal RNA: sequence and secondary structure of the 9S kinetoplast ribosomal RNA from Leishmania tarentolae. Proc Natl Acad Sci U S A. 1985 Mar;82(5):1401–1405. doi: 10.1073/pnas.82.5.1401. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. de la Cruz V. F., Neckelmann N., Simpson L. Sequences of six genes and several open reading frames in the kinetoplast maxicircle DNA of Leishmania tarentolae. J Biol Chem. 1984 Dec 25;259(24):15136–15147. [PubMed] [Google Scholar]
  19. de la Cruz V. F., Simpson A. M., Lake J. A., Simpson L. Primary sequence and partial secondary structure of the 12S kinetoplast (mitochondrial) ribosomal RNA from Leishmania tarentolae: conservation of peptidyl-transferase structural elements. Nucleic Acids Res. 1985 Apr 11;13(7):2337–2356. doi: 10.1093/nar/13.7.2337. [DOI] [PMC free article] [PubMed] [Google Scholar]

Articles from Nucleic Acids Research are provided here courtesy of Oxford University Press

RESOURCES