Chloroplast tRNA gene contains a long intron in the D stem: Nucleotide sequences of tobacco chloroplast genes for tRNA (UCC) and tRNA (UCU)
- PMID: 16593407
- PMCID: PMC344685
- DOI: 10.1073/pnas.81.2.405
Chloroplast tRNA gene contains a long intron in the D stem: Nucleotide sequences of tobacco chloroplast genes for tRNA (UCC) and tRNA (UCU)
Abstract
The nucleotide sequences of tobacco chloroplast genes for tRNA(Gly) (UCC) and tRNA(Arg) (UCU) have been determined. The tRNA(Gly) gene has a 691-base-pair intron located in the D stem while the tRNA(Arg) gene does not have any intron. The tRNA(Gly) and tRNA(Arg) genes are encoded on the same strand and separated by a 169-base-pair spacer. The tRNA(Gly) gene is transcribed as a 900-base precursor RNA molecule. The tRNA(Gly) and tRNA(Arg) deduced from the DNA sequences show 84% and 55% sequence homologies with Escherichia coli tRNA(Gly) (UCC) and phage T4 tRNA(Arg) (UCU), respectively.
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