Yukio Sugimura

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A double-stranded ribonuclease (Bm-dsRNase) was separated from the digestive juice of the silkworm larvae, Bombyx mori. The full-length cDNA was produced and sequenced using a 20 mer primer designed from the N-terminal sequence of the Bm-dsRNase. The cDNA had an ORF encoding 51 kDa precursor protein which can be divided into three domains: a signal peptide,(More)
Although calcium carbonate is known to be a common biomineral in plants, very little attention has been given to the biological control of calcium carbonate deposition. In mulberry leaves, a subcellular structure is involved in mineral deposition and is described here by a variety of cytological techniques. Calcium carbonate was deposited in large, rounded(More)
Mulberry leaves are the sole diet of the silkworm, Bombyx mori. The host urease is incorporated into the larval hemolymph and involved in nitrogen metabolism in the insect. To investigate the selective absorption of the host urease to the larvae, crude urease was prepared from mulberry leaves and roots. Root urease was identical to leaf urease on the basis(More)
To investigate the effects of orally administered reduced-glutathione (GSH) and oxidized-glutathione (GSSG) on liver GSH repletion and liver injury, acetaminophen (AAP) highly loaded rats were used. Orally administered GSH, dependent on dosage, indicated a protective effect against AAP-induced hepatotoxicity. This effect was associated with a recovery of(More)
When calcium carbonate crystals are formed in mulberry (Morus abla) idioblasts, they are deposited in newly formed cell wall sacs. The initial cytological events leading to cell wall sac formation were observed in the distal end of young idioblasts and tentatively categorized into four stages. The first indication of formation was the separation of the(More)
The distribution and ultrastructural features of idioblasts containing calcium oxalate crystals were studied in leaf tissues of mulberry, Morus alba L. In addition to the calcium carbonate crystals formed in epidermal idioblasts, large calcium oxalate crystals were deposited in cells adjacent to the veins and surrounded by a cell wall sheath which had(More)
Accumulation of Isoflavones in Lupin Seedings Treated with Copper Chloride Yusuke Shibuya, Yukio Sugimura, Satoshi Tahara & Junya Mizutani To cite this article: Yusuke Shibuya, Yukio Sugimura, Satoshi Tahara & Junya Mizutani (1992) Accumulation of Isoflavones in Lupin Seedings Treated with Copper Chloride, Bioscience, Biotechnology, and Biochemistry, 56:4,(More)
Mulberry tree leaves were shown to have mucilaginous polysaccharides. The extracted water-soluble mucilage was separated into three fractions via a cetylpyridinum chloride complex and purified by anion-exchange chromatography. Five acidic polysaccharides were separated from these fractions, one of which was a major polysaccharide (Mp-3) that was(More)
Mesophyll protoplasts were isolated from leaves of in vitro grown patchouli (Pogostemon cablin Benth.). The protoplasts were encapsulated in alginate beads, approximately 2–3×103 protoplasts per 25 μl bead. Successful colony formation was induced when the protoplast beads were inoculated into a liquid medium supplemented with 10-6 M NAA and 10-5 M BA. The(More)