Incorporation of L-(Me- 2 H 3 )methionine into isoprenoid quinones and related compounds by Euglena gracilis
| Autor: | David R. Threlfall |
|---|---|
| Rok vydání: | 1972 |
| Předmět: |
Euglena gracilis
Chloroplasts Stereochemistry ved/biology.organism_classification_rank.species Biophysics Biology Ring (chemistry) Tritium Biochemistry Mass Spectrometry chemistry.chemical_compound Endocrinology Methionine Group (periodic table) Organic chemistry Animals Vitamin E ved/biology Quinones Esters Deuterium Terpenoid chemistry Phytylplastoquinone Spectrophotometry Ultraviolet Transmethylation |
| Zdroj: | Biochimica et biophysica acta. 280(3) |
| ISSN: | 0006-3002 |
| Popis: | 1. 1. The incorporation of 2H from l -[Me-2H3]methionine into monohydroxy-phylloquinone, 1-O-methyl phytylplastoquinol, phytylplastoquinone, plastoquinone-9, α-tocopherolquinone, α-tocopherol, rhodoquinone-9 and ubiquinone-9 by Euglena gracilis has been investigated. 2. 2. The results showed that the S-methyl group of l -methionine gives rise to the 3-methyl and 5- and 6-O-methyl groups of ubiquinone-9, the 3-methyl and 5-O-methyl groups of rhodoquinone-9, the 2-methyl group of phylloquinone, the 1-O-methyl group and one of the two nuclear methyl groups of 1-O-methyl phytylplastoquinol, one of the two nuclear methyl groups of phytylplastoquinone and plastoquinone-9 and two of the three methyl groups on the aromatic ring of α-tocopherol and thep-benzoquinone ring of α-tocopherolquinone. 3. 3. In all cases the O-methyl and C-methyl groups are introduced by transmethylation reactions. |
| Databáze: | OpenAIRE |
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