Akinori Suzuki

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Allatotropin (AT) is an insect neuropeptide isolated from the tobacco hornworm, Manduca sexta, stimulates juvenile hormone (JH) biosynthesis by the corpora allata. A cDNA isolated from the true armyworm, Pseudaletia unipuncta, encodes a 135 amino acid AT precursor peptide which contains the AT peptide, with processing sites necessary for its endoproteolytic(More)
The self-incompatibility of Brassica species is under the control of multi-alleles at the single locus S [4]. The S glycoproteins have been thought to be products of S genes and to be associated with the recognition system in the selfincompatibility system [ 5 ]. On the other hand, we reported the existence of NS glycoproteins in Brassica campestris which(More)
ECP31, an embryogenic-cell protein from carrot (Daucus carota L.), was purified by sequential column-chromatographic steps and digested by V8 protease on a nitrocellulose membrane. The resultant peptides were separated by reverse-phased column chromatography and sequenced. The sequences obtained were 70–80% homologous to those of a(More)
The silkworm, Bombyx mori, is a very useful model species, especially in genetics, biochemistry, physiology, and molecular biology, helping researchers unravel the many mysteries involved in the insect life process. The present review describes our early contributions as chemists to the study of the molting and metamorphosis of B. mori. We also present(More)
Allosamidin is a strong inhibitor of family 18 chitinases. We previously reported the presence of allosamidin-sensitive and -insensitive chitinases (chitinase S and IS) in the culture filtrate of the allosamidin-producing strain, Streptomyces sp. AJ9463. In this study, we cloned and sequenced the genes encoding the two chitinases, which clarified that(More)
Dolphins sometimes accumulate Hg and Se as high as 100 μg/g or more in their livers. In the present study, a compound containing Hg and Se in a dolphin liver was extracted and purified by cation exchange, gel filtration, and paper, anion exchange, and chelate chromatographies. The Hg and Se contents in every fraction were determined by atomic absorption(More)
Pigmentation of last instar larvae of the cabbage armyworm,Mamestra brassicae is of two types: melanin in the cuticle and ommochrome in the epidermis. The latter was found to be primarily xanthommatin. When allatectomy was performed 8 h before head capsule slippage (HCS) in the last larval molt, later ommochrome synthesis was inhibited. Application of(More)
Sexual aggregation involved in conjugative transfer of the Enterococcus faecalis plasmids pPD1 and pAD1 is enhanced by sex pheromones cPD1 and cAD1, respectively, which are excreted from recipient cells. PD78 (78 kDa) and AD74 (74 kDa) were detectable on the surface of donors harboring pPD1 and pAD1, respectively, at the time of cell aggregation. The(More)
Efficient plant breeding methods must be developed in order to increase yields and feed a growing world population, as well as to meet the demands of consumers with diverse preferences who require high-quality foods. We propose a strategy that integrates breeding simulations and phenotype prediction models using genomic information. The validity of this(More)
A cDNA encoding a novel heptahelical receptor from the prothoracic glands of the silkworm, Bombyx mori was cloned and sequenced during screening of a prothoracicotropic hormone (PTTH) receptor. Orthologs of this receptor are found not only in insects, but also in the vertebrates. In B. mori, ubiquitous expression of the mRNA was observed in the larva. Also,(More)