Rapid determination of free D-serine with chicken D-serine dehydratase. 2011

Chihiro Suzuki, and Masahito Murakami, and Hirokazu Yokobori, and Hiroyuki Tanaka, and Tetsuo Ishida, and Kihachiro Horiike, and Yoko Nagata
Department of Materials and Applied Chemistry, College of Science and Technology, Nihon University, Kanda-Surugadai, Tokyo 101-8308, Japan.

We have developed a simple, rapid, and inexpensive method of measuring the concentration of intrinsic free D-serine in tissue samples. This method uses chicken D-serine dehydratase in an enzymatic reaction to produce pyruvate, which is detected spectrophotometrically. Pyridoxal 5'-phosphate (PLP), a cofactor of D-serine dehydratase, increased pyruvate formation by 28%. The presence of Zn(2+) or ethylenediaminetetraacetic acid (EDTA) did not have any effect on pyruvate formation under the present assay conditions. In addition, this method was not affected by the presence of a large excess of L-serine, nor by the presence of tissue extracts, and accurately determined concentrations of 2-30 μM (200 pmol-3 nmol) of D-serine. The entire assay requires only 60 min. With this method, we determined the concentration of D-serine in various silkworm tissues. The results were in agreement with high performance liquid chromatography measurements. We found high concentrations of D-serine in silkworm larvae at day 3 of the fifth instar; specifically, 509 nmol g(-1) wet tissue in the midgut, 434 nmol g(-1) in the ovary, and 353 nmol g(-1) in the testis.

UI MeSH Term Description Entries
D007814 Larva Wormlike or grublike stage, following the egg in the life cycle of insects, worms, and other metamorphosing animals. Maggots,Tadpoles,Larvae,Maggot,Tadpole
D009928 Organ Specificity Characteristic restricted to a particular organ of the body, such as a cell type, metabolic response or expression of a particular protein or antigen. Tissue Specificity,Organ Specificities,Specificities, Organ,Specificities, Tissue,Specificity, Organ,Specificity, Tissue,Tissue Specificities
D011732 Pyridoxal Phosphate This is the active form of VITAMIN B 6 serving as a coenzyme for synthesis of amino acids, neurotransmitters (serotonin, norepinephrine), sphingolipids, aminolevulinic acid. During transamination of amino acids, pyridoxal phosphate is transiently converted into pyridoxamine phosphate (PYRIDOXAMINE). Pyridoxal 5-Phosphate,Pyridoxal-P,Phosphate, Pyridoxal,Pyridoxal 5 Phosphate,Pyridoxal P
D002645 Chickens Common name for the species Gallus gallus, the domestic fowl, in the family Phasianidae, order GALLIFORMES. It is descended from the red jungle fowl of SOUTHEAST ASIA. Gallus gallus,Gallus domesticus,Gallus gallus domesticus,Chicken
D002851 Chromatography, High Pressure Liquid Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed. Chromatography, High Performance Liquid,Chromatography, High Speed Liquid,Chromatography, Liquid, High Pressure,HPLC,High Performance Liquid Chromatography,High-Performance Liquid Chromatography,UPLC,Ultra Performance Liquid Chromatography,Chromatography, High-Performance Liquid,High-Performance Liquid Chromatographies,Liquid Chromatography, High-Performance
D003124 Colorimetry Any technique by which an unknown color is evaluated in terms of standard colors. The technique may be visual, photoelectric, or indirect by means of spectrophotometry. It is used in chemistry and physics. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
D006836 Hydro-Lyases Enzymes that catalyze the breakage of a carbon-oxygen bond leading to unsaturated products via the removal of water. EC 4.2.1. Dehydratase,Dehydratases,Hydrase,Hydrases,Hydro Lyase,Hydro-Lyase,Hydro Lyases,Lyase, Hydro,Lyases, Hydro
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012694 Serine A non-essential amino acid occurring in natural form as the L-isomer. It is synthesized from GLYCINE or THREONINE. It is involved in the biosynthesis of PURINES; PYRIMIDINES; and other amino acids. L-Serine,L Serine
D012831 Bombyx A genus of silkworm MOTHS in the family Bombycidae of the order LEPIDOPTERA. The family contains a single species, Bombyx mori from the Greek for silkworm + mulberry tree (on which it feeds). A native of Asia, it is sometimes reared in this country. It has long been raised for its SILK and after centuries of domestication it probably does not exist in nature. It is used extensively in experimental GENETICS. (From Borror et al., An Introduction to the Study of Insects, 4th ed, p519) Bombyx mori,Silkmoths,Silkworms,Silkmoth,Silkworm,Bombyx morus,Bombyxs,mori, Bombyx

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