caa a22 4500 465758797 CHVBK 20180323111854.0 cr unu---uuuuu 170327e19900501xx s 000 0 eng 10.1007/BF00334524 doi (NATIONALLICENCE)springer-10.1007/BF00334524 Organization and nucleotide sequence of ribosomal RNA genes on a circular 73 kbp DNA from the colourless flagellate Astasia longa [Elektronische Daten] [G. Siemeister, W. Hachtel] Summary: Three tandemly arranged repeats (A, B, C) of 16S and 23S rDNA, and one supplementary (S) 16S rDNA adjacent to the 16S rDNA of repeat A, are present within an 18 kbp segment of a circular 73 kbp DNA from the colourless flagellate Astasia longa. The repeat units are separated by a short region containing a 5S rRNA gene and a gene for tRNA-Val (UAC). Sequence comparisons reveal 78%, 81%, and 67% identical nucleotides of the 23S rDNA (A), the 16S rDNA (B), and the 5S rDNA (A), respectively, with the corresponding genes of the Euglena gracilis chloroplast genome. As in Euglena chloroplasts, the 3′-terminal protion of the 23S rDNA is homologous to the 4.5S rRNA gene of higher plant chloroplast genomes. These results are supportive of a common evolutionary origin for the Astasia 73 kbp DNA and the Euglena 145 kbp chloroplast DNA. Springer-Verlag, 1990 Astasia longa nationallicence Euglena gracilis nationallicence Chloroplast DNA nationallicence Ribosomal RNA genes nationallicence Siemeister G. Botanisches Institut der Universität Bonn, Kirschallee 1, D-5300, Bonn, Federal Republic of Germany aut Hachtel W. Botanisches Institut der Universität Bonn, Kirschallee 1, D-5300, Bonn, Federal Republic of Germany aut Current Genetics Springer-Verlag 17/5(1990-05-01), 433-438 0172-8083 17:5<433 1990 17 294 https://doi.org/10.1007/BF00334524 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00334524 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Siemeister G. Botanisches Institut der Universität Bonn, Kirschallee 1, D-5300, Bonn, Federal Republic of Germany aut NATIONALLICENCE 700 1- Hachtel W. Botanisches Institut der Universität Bonn, Kirschallee 1, D-5300, Bonn, Federal Republic of Germany aut NATIONALLICENCE 773 0- Current Genetics Springer-Verlag 17/5(1990-05-01), 433-438 0172-8083 17:5<433 1990 17 294 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer