Glutamate synthase is plastid-encoded in a red alga: implications for the evolution of glutamate synthases
| Autor: | Markus Kostrzewa, Klaus Zetsche, Klaus Valentin |
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| Rok vydání: | 1993 |
| Předmět: |
Molecular Sequence Data
Plant Science Biology Genome Homology (biology) Glutamate synthase Genetics Amino Acid Sequence Plastids Cloning Molecular Plastid Gene Genomic organization Sequence Homology Amino Acid Glutamate Synthase fungi Nucleic acid sequence food and beverages General Medicine Blotting Northern Biological Evolution Chloroplast Blotting Southern Rhodophyta biology.protein Agronomy and Crop Science |
| Zdroj: | Plant Molecular Biology. 23:77-85 |
| ISSN: | 1573-5028 0167-4412 |
| DOI: | 10.1007/bf00021421 |
| Popis: | An actively transcribed gene (glsF) encoding for ferredoxin-dependent glutamate synthase (Fd-GOGAT) was found on the plastid genome of the multicellular red alga Antithamnion sp. Fd-GOGAT is not plastid-encoded in chlorophytic plants, demonstrating that red algal plastid genomes encode for additional functions when compared to those known from green chloroplasts. Moreover, our results suggest that the plant Fd-GOGAT has an endosymbiotic origin. The same may not be true for NADPH-dependent GOGAT. In Antithamnion glsF is flanked upstream by cpcBA and downstream by psaC and is transcribed monocistronically. Implications of these results for the evolution of GOGAT enzymes and the plastid genome are discussed. |
| Databáze: | OpenAIRE |
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