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  1. No Access

    Article

    Development of a rapid-fire drug screening method by probe electrospray ionization tandem mass spectrometry for human urine (RaDPi-U)

    Drug screening tests are mandatory in the search for drugs in forensic biological samples, and immunological methods and mass spectrometry (e.g., gas chromatography-mass spectrometry and liquid chromatography-...

    Kazuaki Hisatsune, Tasuku Murata… in Analytical and Bioanalytical Chemistry (2024)

  2. No Access

    Article

    Optimal inter-batch normalization method for GC/MS/MS-based targeted metabolomics with special attention to centrifugal concentration

    This study investigated the optimal inter-batch normalization method for gas chromatography/tandem mass spectrometry (GC/MS/MS)-based targeted metabolome analysis of rodent blood samples. The effect of centrif...

    Kei Zaitsu, Saki Noda, Tomomi Ohara… in Analytical and Bioanalytical Chemistry (2019)

  3. Article

    Open Access

    The significance of microscopic mass spectrometry with high resolution in the visualisation of drug distribution

    The visualisation and quantitative analysis of the native drug distribution in a pre-clinical or clinical setting are desirable for evaluating drug effects and optimising drug design. Here, using matrix-assist...

    Masahiro Yasunaga, Masaru Furuta, Koretsugu Ogata, Yoshikatsu Koga… in Scientific Reports (2013)

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  4. No Access

    Article

    Complete nucleotide sequence of the freshwater unicellular cyanobacterium Synechococcus elongatus PCC 6301 chromosome: gene content and organization

    The entire genome of the unicellular cyanobacterium Synechococcus elongatus PCC 6301 (formerly Anacystis nidulans Berkeley strain 6301) was sequenced. The genome consisted of a circular chromosome 2,696,255 bp lo...

    Chieko Sugita, Koretsugu Ogata, Masamitsu Shikata… in Photosynthesis Research (2007)

  5. No Access

    Article

    The Replicon of the Cryptic Plasmid pSBO1 Isolated from Streptococcus bovis JB1

    Mutsumi Nakamura, Koretsugu Ogata, Takafumi Nagamine… in Current Microbiology (2001)

  6. No Access

    Article

    Phenotypic Characterization of Polysaccharidases Produced by Four Prevotella Type Strains

    Hiroki Matsui, Koretsugu Ogata, Kiyoshi Tajima, Mutsumi Nakamura… in Current Microbiology (2000)

  7. No Access

    Article

    Characterization of the Cryptic Plasmid pSBO2 Isolated from Streptococcus bovis JB1 and Construction of a New Shuttle Vector

    Mutsumi Nakamura, Koretsugu Ogata, Takafumi Nagamine… in Current Microbiology (2000)

  8. No Access

    Article

    Sequence Analysis of Small Cryptic Plasmids Isolated from Selenomonas ruminantium S20

    Two small cryptic plasmids designated pONE429 and pONE430 were isolated from a rumen bacterium, Selenomonas ruminantium S20. The complete sequence of pONE429 was 2100 bp and contained one open reading frame (ORF...

    Mutsumi Nakamura, Takafumi Nagamine, Koretsugu Ogata… in Current Microbiology (1999)

  9. No Access

    Article

    Transcriptional Regulation of the Prevotella ruminicola recA Gene

    The regulation of the recA gene expression in the obligately anaerobic rumen bacterium Prevotella ruminicola was investigated by monitoring the recA-specific transcript level. P. ruminicola recA forms a monocist...

    Roustam I. Aminov, Kiyoshi Tajima, Koretsugu Ogata… in Current Microbiology (1998)

  10. No Access

    Article

    Construction of a Fibrobacter succinogenes Genomic Map and Demonstration of Diversity at the Genomic Level

    The genomic cleavage map of the type strain Fibrobacter succinogenes S85 was constructed. The restriction enzymes AscI, AvrII, FseI, NotI, and SfiI generated DNA fragments of suitable size distribution that coul...

    Koretsugu Ogata, Rustem I. Aminov, Takafumi Nagamine… in Current Microbiology (1997)