Occurrence of d-alanine in the eggs and the developing embryo of the sea urchin Paracentrotus lividus |
| |
| Institution: | 1. Kitasato University School of Marine Biosciences, Sagamihara, Kanagawa 252-0373, Japan;2. Ibaraki Prefectural Fisheries Research Institute, Hitachinaka, Ibaraki 311-1203, Japan;3. Laboratory of Marine Biochemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan;1. Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen 361005, PR China;2. Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, PR China;3. Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Fisheries College, Jimei University, Xiamen 361021, PR China |
| |
| Abstract: | - 1.1. d-Alanine has been found in appreciable amounts in the eggs and embryos of the sea urchin Paracentrotus lividus.
- 2.2. The content of d-alanine, expressed as pmol/egg or embryo, is 1.32 in the egg, 0.81 in the blastula, 0.54 in the gastrula and 0.60 in the pluteus.
- 3.3. The percentage of d-alanine with respect to the total alanine (d + l) decreases during embryonic development.
- 4.4. d-Amino acid oxidase, d-alanine transaminase and d-alanine racemase activities were found neither in eggs nor in embryos.
- 5.5. Therefore, it does not appear likely that d-alanine is subject to oxidative metabolism.
- 6.6. The decrease in this d-amino acid during development may be due to its utilization in the synthesis of a more complex molecule.
|
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
