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豌豆叶绿体 DNA 中转录 RNA 基因的核苷酸序列。

Nucleotide sequences of transfer RNA genes in the Pisum sativum chloroplast DNA.

机构信息

Department of Molecular Biology and Biochemistry, University of California, 92717, Irvine, CA, U.S.A..

出版信息

Plant Mol Biol. 1986 Jan;6(1):1-12. doi: 10.1007/BF00021301.

DOI:10.1007/BF00021301
PMID:24307149
Abstract

Eight transfer RNA (tRNA) genes which were previously mapped to five regions of the Pisum sativum (pea) chloroplast DNA (ctDNA) have been sequenced. They have been identified as tRNA(Val)(GAC), tRNA(Asn)(GUU), tRNA(Arg)(ACG), tRNA(Leu)(CAA), tRNA(Tyr)(GUA), tRNA(Glu)(UUC), tRNA(His)(GUG), and tRNA(Arg)(UCU) by their anticodons and by their similarity to other previously identified tRNA genes from the chloroplast DNAs of higher plants or from E. gracilis. In addition,two other tRNA genes, tRNA(Gly) (UCC) and tRNA(Ile)(GAU), have been partially sequenced. The tRNA genes are compared to other known chloroplast tRNA genes from higher plants and are found to be 90-100% homologous. In addition there are similarities in the overall arrangement of the individual genes between different plants. The 5' flanking regions and the internal sequences of tRNA genes have been studied for conserved regions and consensus sequences. Two unusual features have been found: there is an apparent intron in the D-loop of the tRNA(Gly)(UCC), and the tRNA(Glu)(UUC) contains GATTC in its T-loop.

摘要

已对先前被定位到豌豆质体 DNA（ctDNA）五个区域的 8 个转移 RNA（tRNA）基因进行了测序。通过它们的反密码子和与先前从高等植物的叶绿体 DNA 或从 E. gracilis 中鉴定出的其他 tRNA 基因的相似性，它们被鉴定为 tRNA(Val)(GAC)、tRNA(Asn)(GUU)、tRNA(Arg)(ACG)、tRNA(Leu)(CAA)、tRNA(Tyr)(GUA)、tRNA(Glu)(UUC)、tRNA(His)(GUG)和 tRNA(Arg)(UCU)。此外，还对另外两个 tRNA 基因 tRNA(Gly)(UCC)和 tRNA(Ile)(GAU)进行了部分测序。将 tRNA 基因与其他已知的高等植物叶绿体 tRNA 基因进行比较，发现它们具有 90-100%的同源性。此外，不同植物之间基因的整体排列也存在相似性。研究了 tRNA 基因的 5'侧翼区和内部序列，以寻找保守区和共识序列。发现了两个不寻常的特征：tRNA(Gly)(UCC)的 D 环中存在明显的内含子，而 tRNA(Glu)(UUC)的 T 环中含有 GATTC。

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