The trpA gene on the plastid genome of Cyanidium caldarium strain RK-1 |
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| Authors: | Niji Ohta Naoki Sato Shigeyuki Kawano Tsuneyoshi Kuroiwa |
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| Institution: | (1) Advanced Research Center for Human Sciences, Waseda University, 359 Tokorozawa, Saitama, Japan;(2) Laboratory of Life Science, Tokyo Gakugei University, 4-1-1 Nukuikita-machi, 184 Koganei, Tokyo, Japan;(3) Department of Biology, Faculty of Science, University of Tokyo, Hongo, 113 Tokyo, Japan |
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| Abstract: | The trpA gene (for the  subunit of tryptophan synthase) was found on the plastid genome of the  primitive unicellular red alga Cyanidium caldarium strain RK-1. This is the first example of an actively-transcribed gene for tryptophan synthase encoded on a plastid genome. In contrast to trpA, trpB (the gene for the  subunit of tryptophan synthase) was encoded in the cell nucleus. Considering the primitive characteristics of C. caldarium, trpB must have been lost from the plastid genome before trpA.The nucleotide sequence data reported in this paper will appear in the DDBJ, EMBL and GenBank Nucleotide Sequence Databases with the following accession number D17791 |
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| Keywords: | Cyanidium caldarium trpA trpB Plastid genome |
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