Publications by authors named "Moriuchi R"

Article Synopsis
  • Researchers investigated yeast mutants with temperature sensitivity that could be rescued by ubiquitin overexpression.
  • One identified gene, encoding a subunit of the endoplasmic reticulum signal peptidase complex (SPC), showed that ubiquitin can compensate for certain loss-of-function challenges at high temperatures.
  • The study indicates a significant relationship between the SPC and the ubiquitin-proteasome system, highlighting the method's potential for discovering new ubiquitin-related genes and cellular mechanisms.
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strain m318 is an arsenite-oxidizing rhizobacterium isolated from the rhizosphere of an arsenic hyperaccumulator plant, beneficial for arsenic phytoremediation. Here, we report the complete genome sequence of this strain, which consists of a circular chromosome assembled using long reads sequenced on Nanopore and polished with Illumina paired-end reads.

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While screening for antibiotics in a marine sample, we discovered a berninamycin C-producing actinomycete, designated YSPA8, isolated from a sponge. A polyphasic approach was used to determine the taxonomic position of the strain. Strain YSPA8 formed sympodially branched aerial mycelia that ultimately segment into chains of spores.

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is an actinorhizal plant that coexists with the nitrogen-fixing actinomycete via nodules. It produces a variety of polyketides, including flavonoids, stilbenoids, and diarylheptanoids. These compounds have beneficial biological activities.

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sp. strain 22B1P utilizes 3-chlorobenzoate as a carbon source. Complete genome sequencing of strain 22B1P revealed two chromosomes and two plasmids.

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Introduction: Nucleic acid amplification tests (NAATs) play a pivotal role in clinical laboratories for diagnosing COVID-19. This study aimed to elucidate the accuracy of these tests.

Methods: In 2021, an external quality assessment of NAATs for SARS-CoV-2 was conducted in 47 laboratories in Tokyo, Japan.

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Diarylheptanoids are secondary metabolites of plants that comprise a C-C-C scaffold. They can be broadly classified into linear-type and cyclic-type diarylheptanoids based on their chemical structures. Actinorhizal trees, such as Casuarina, Alnus, and Myrica, which form nodule symbiosis with actinomycetes Frankia, produce cyclic diarylheptanoids (CDHs); in Alnus sieboldiana Matsum.

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The compound 3-chlorobenzoate (3-CBA) is a hazardous industrial waste product that can harm human health and the environment. This study investigates the physiological and genetic potential for 3-chlorobenzoate (3-CBA) degradation. Six 3-CBA Gram-negative degraders with different degradation properties belonging to the genera , and were isolated from the soil.

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A novel bacterium designated 5-21a, isolated from chitin-treated upland soil, exhibits methionine (Met) auxotrophy and chitinolytic activity. A physiological experiment revealed the cobalamin (synonym, vitamin B)(Cbl)-auxotrophic property of strain 5-21a. The newly determined complete genomic sequence indicated that strain 5-21a possesses only the putative gene for Cbl-dependent Met synthase (MetH) and lacks that for the Cbl-independent one (MetE), which implies the requirement of Cbl for Met-synthesis in strain 5-21a.

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Objective A positive hemoculture in acute cholangitis is serious, but a blood culture result cannot be obtained at the initial diagnosis and so cannot be used for the severity assessment and decision-making concerning urgent/early biliary drainage. Accordingly, a predictor for bacteremia at the initial diagnosis of acute cholangitis would be particularly useful. We investigated the association between neutrophil proportions in white blood cell counts (%Neutro) and bacteremic acute cholangitis.

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Rhodococcus qingshengii N9T-4 can grow on media without added carbon sources. Here, we report the complete nucleotide sequence of the N9T-4 genome, consisting of a chromosome (6,439,972 bp), a linear plasmid (pN9T4-1 [565,206 bp]), and two circular plasmids (pN9T-4-2 [99,662 bp] and pN9T-4-3 [30,419 bp]).

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Various conjugative plasmids were obtained by exogenous plasmid capture, biparental mating, and/or triparental mating methods from different environmental samples in Japan. Based on phylogenetic analyses of their whole-nucleotide sequences, new IncP/P-1 plasmids that could be classified into novel subgroups were obtained. Mini-replicons of the plasmids were constructed, and each of them was incompatible with at least one of the IncP/P-1 plasmids, although they showed diverse iteron sequences in their regions.

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Rationale: Muscle weakness due to cancer-associated dermatomyositis (CADM) can be misdiagnosed as cancer cachexia and disuse atrophy.

Patient Concerns: A 75-year-old female was admitted to our institute with muscle weakness, dysphagia, and suspected gallbladder cancer. Computed tomography and cytopathological examinations of the liver biopsy and fine-needle aspiration from swollen lymph nodes using endoscopic ultrasonography revealed cancer in the gallbladder body and metastasis to the lymph nodes around the abdominal aorta.

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Introduction: Colonic self-expandable metallic stents are widely used to treat malignant colorectal obstructions. Stent placement in lesions near the dentate line causes problems, including severe pain due to difficulty in positioning the stent accurately. Therefore, a proximal release-type stent was developed to overcome this issue, and this preliminary study aimed to investigate its efficacy and safety.

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Lactiplantibacillus plantarum NMZ-1139 was isolated from whisky mash and applied to sour beer production. Here, we report the draft genome sequence of L. plantarum NMZ-1139, which contains 3,117 protein-coding sequences, including genes associated with hop resistance, such as and .

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Introduction: The Tokyo Metropolitan Government (TMG) conducted an external quality assessment (EQA) survey of pathogen nucleic acid amplification tests (NAATs) as a TMG EQA program for SARS-CoV-2 for clinical laboratories in Tokyo.

Methods: We diluted and prepared a standard product manufactured by Company A to about 2,500 copies/mL to make a positive control and distribute it with a negative control. The participants reported the use of the NAATs methods for SARS-CoV-2, the name of the real-time RT-PCR kit, the name of the detection device, the target gene(s), nucleic acid extraction kit, Threshold Cycle value in the case of RT-PCR and the Threshold time value and Differential calculation value in the case of Loop-Mediated Isothermal Amplification (LAMP) method.

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Article Synopsis
  • The study examined the decline of Comamonas testosteroni R2's ability to degrade phenol in chemostat conditions and its aerobic growth in batch settings, identifying physiological and transcriptomic changes.
  • It was found that the accumulation of metabolites led to decreased enzymatic activities for phenol and catechol degradation and a significant up-regulation of genes for nitrogen transport, particularly ammonium uptake, under collapse conditions.
  • The research demonstrated that amino acids like L-arginine can reverse growth inhibition by balancing carbon and nitrogen metabolism, indicating that this imbalance contributed to the strain's collapse.
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sp. strain NK8 grows on 3-chlorobenzoate and shows chemotaxis toward 3-chlorobenzoate and its degradation products, such as chlorocatechols. Complete genome sequencing revealed a 9.

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Strain RF1110005, which was isolated from brackish lake water sampled at Lake Sanaru in Japan as a "filterable" bacterial strain, was characterized as a novel species in the genus Fluviispira, family Silvanigrellaceae, order Silvanigrellales, the class Oligoflexia and the phylum Bdellovibrionota. Cells of RF1110005 were aerobic, Gram stain negative, and show a pleomorphic morphology of spiral, filamentous and rod shapes. Catalase reaction was positive.

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We report here the complete genome sequence of DSM 9389, which harbors eight 16S rRNA genes classified into three types. The genome sequence of this strain showed a high average nucleotide identity (97.3%) with that of the highly membrane vesicle-producing strain ATCC 33320.

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Background: Intraductal tubulopapillary neoplasm (ITPN) of the pancreas is a new disease concept defined by the World Health Organization in 2010. ITPN progresses with tubulopapillary growth in the pancreatic duct and is known to have a fair prognosis. Localization in the main pancreatic duct (MPD) is one characteristic.

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RNA-seq analysis of Cupriavidus necator NH9, a 3-chlorobenzoate degradative bacterium, cultured with 3-chlorobenzaote and benzoate, revealed strong induction of genes encoding enzymes in degradation pathways of the respective compound, including the genes to convert 3-chlorobenzaote and benzoate to chlorocatechol and catechol, respectively, and the genes of chlorocatechol ortho-cleavage pathway for conversion to central metabolites. The genes encoding transporters, components of the stress response, flagellar proteins, and chemotaxis proteins showed altered expression patterns between 3-chlorobenzoate and benzoate. Gene Ontology enrichment analysis revealed that chemotaxis-related terms were significantly upregulated by benzoate compared with 3-chlorobenzoate.

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We report here 16S rRNA gene amplicon sequence analysis of the gut microbiota in three species of deep-sea fish collected from Suruga Bay, Japan. Of the three species, two were dominated by the phylum (genus ), while one was dominated by the phyla (genus ) and (unclassified ).

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