M. Hasegawa

Publications19
h-index8
Citations350
Highly Influential Citations11
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Cloning and nucleotide sequence of the gene responsible for chlorination of tetracycline.
Two cosmid clones containing distinct types of self-defense gene of a 6-demethylchlortetracycline producer, Streptomyces aureofaciens NRRL3203, were isolated. The gene responsible for chlorination of… Expand
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Methionine-induced Phytoalexin Production in Rice Leaves
The application of methionine on wounded rice leaves induced the production of rice phytoalexins, sakuranetin and momilactone A. This induction resulted from stimulation of phenylalanine… Expand
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Origin and early evolution of eukaryotes inferred from the amino acid sequences of translation elongation factors 1alpha/Tu and 2/G.
Abstract Phylogenetic placements of archaebacteria and protozoa are important in understanding the origin and early evolution of eukaryotes. These problems have been analyzed mainly by comparisons of… Expand
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The entire population of Thermus thermophilus cells is always competent at any growth phase.
Thermus thermophilus mutants carrying unlinked double auxotrophic markers were transformed with wild type chromosomal DNA at various growth phases. The percentages of competent cells in the total… Expand
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AN EXPERIMENTAL STUDY ON THE OPTIMUM PROPERTIES OF SUSPENSION FOR SLURRY SHIELD TUNNELING IN GRAVEL GROUND
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A self-defense gene homologous to tetracycline effluxing gene essential for antibiotic production in Streptomyces aureofaciens.
By Northern blot analyses with DNA probes carrying 6-demethylchlortetracycline (6-DCT) biosynthetic genes from Streptomyces aureofaciens NRRL3203, a highly expressed gene (tcrC) was detected in a… Expand
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Semi Quantification of Gibberellins in the Anthers of Thermosensitive Genetic Male Sterile Rice (Oryza sativa L. cv. PL12).
The levels of endogenous GAs in the anthers of rice (Oryza sativa L., cv. Reimei (normal)) and in those of sterile and fertile plants of a thermosensitive genetic male sterile line (Norin PL12;… Expand
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Purification and Properties of Aldehyde Reductases from Yeasts That Convert Ethyl 2-Acetamido-3-oxobutyrate to Optically Active Ethyl 2-Acetamido-3-hydroxybutyrate.
Yeasts were screened for strains that converted ethyl 2-acetamido-3-oxobutyrate (AAOB) to optically active ethyl 2-acetamido-3-hydroxybutyrate (AAHB). Sporobolomyces sp. AKU4430 was found to… Expand
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Phylogenetic Position of Amitochondriate Protists in the Evolution of Eukaryotes.
Mitochondria are very likely to have descended from eubacteria by endosymbiosis. Therefore, phylogenetic placement of amitochondriate protists is important in understanding the origin and early… Expand
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Simple Synthesis of 5,9-Dimethylated Long-Chain Alkanes, the Sex Pheromones of Leaf Miner Moths
Each stereoisomeric mixture of 5,9-dimethylpentadecane and 5,9-dimethylhexadecane, the major and the minor sex pheromone components of Perileucoptera coffeella, respectively, was synthesized in about… Expand
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