1987 Fiscal Year Final Research Report Summary
Studies on the D-amino acids in free forms discovered in plants.
| Project/Area Number |
60480008
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
植物生理学
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| Research Institution | The University of Tokyo |
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Principal Investigator |
HATANAKA Shin-Ichi College of Arts and Sciences, The University of Tokyo, 教養学部, 教授 (90012278)
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| Co-Investigator(Kenkyū-buntansha) |
SATOH Yasohachi College of Arts and Sciences, The University of Tokyo, 教養学部, 助教授 (50012414)
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| Project Period (FY) |
1985 – 1987
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| Keywords | Asdplenium unilaterale / 2-Aminopimelic acid / 2-Amino-3,4-dehydropimelic acid / 2-Amino-4-hydroxypimelic acid / D-Amino acid / Biosynthesis / Phylogeny / 系統 / 分類 |
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| Research Abstract |
1.Quantitative analysis of D-amino acids.
Using L-amino acid oxidase prepared from snake venom, a quantitative analytical method for D-amino acids was established. It is especially useful for the partially racemized samples.
2.Optical properties of 2-aminopimelic acid in Aspleniaceae.
Although this amino acid occurs in Asplenium unilaterale as pure D-form, it is partially racemized in A. wilfordii and the degree of racemization varies with season.
3.Biosynthesis of 2-aminopimelic acid and related compounds.
Results of the feeding experiments with ^<14>C-precursors suggest that L-2-amino-4- hydroxypimelic acid is first synthesized, and the related two D-amino acids, D- 2-aminopimelic acid and trans-3,4-dehydro-D-2-aminopimelic acid, are derived from it.
4.Taxonomy and phylogeny of Asplenium unilaterale Complex.
Asplenium unilaterale which has been known to have a great morphological variation is now separated into 4 different species and two of them were described as new species. Phylogenetical relationships among them were also discussed.
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