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Nucleotide sequence of a Euglena gracilis chloroplast genome region coding for the elongation factor Tu; evidence for a spliced mRNA
Open accessAbstract
We characterize a 1.95 kb transcription product of the Euglena gracilis chloroplast DNA fragment Eco-N + Q by S1 nuclease analysis and DNA sequencing and show that it is the product of three splicing events. Exon 1 (0.45 kb), exon 2 (0.74 kb) and 175 nucleotides of exon 3 (0.53 kb) code for the chloroplast elongation factor protein (EF-Tu). The remaining part of exon 3 and exon 4 (0.23 kb) have unidentified open reading frames. The chloroplast EF-Tu protein has 408 aminoacids and is to 70% homologous with the E. coli EF-Tu protein. The active site for aminoacyl-tRNA binding is highly conserved, while the active site for GTP/GDP binding lacks the cysteine present in the E. coli EF-Tu protein. The two introns separating exons 1, 2 and 3 are, respectively, 103 and 110 nucleotides long. The size of the third intron is not yet determined. The splicing rules for eukaryote mRNA are not followed.
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Cited by
The GTPase superfamily: conserved structure and molecular mechanism
Bourne, H. R., Sanders, D. A., & McCormick, F. (1991) · Nature · doi:10.1038/349117a0 · Cited by 3,392
la Cour, T. F., Nyborg, J., Thirup, S., & Clark, B. F. (1985) · The EMBO Journal · doi:10.1002/j.1460-2075.1985.tb03943.x · Cited by 396
Metadata
- Authors
- Montandon, P.-E., & Stutz, E.
- Venue
- Nucleic Acids Research
- Publisher
- Oxford University Press (OUP)
- Published
- 1983
- Volume
- 11
- Issue
- 17
- Pages
- 5877-5892
- ISSN
- 0305-1048 (ISSN-L)
- 1362-4962
- OpenAlex
- W2090329594
- Cited by
- 159
- References
- 0
- FWCI
- 8.13
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Nucleotide sequence of a Euglena gracilis chloroplast genome region coding for the elongation factor Tu; evidence for a spliced mRNA. https://app.cochat.ai/papers/10.1093/nar/11.17.5877
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- Montandon, P.-E., & Stutz, E. (1983). Nucleotide sequence of a Euglena gracilis chloroplast genome region coding for the elongation factor Tu; evidence for a spliced mRNA. Nucleic Acids Research. https://doi.org/10.1093/nar/11.17.5877
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