K. Nagata

Publication List Details

Period

1988 - 2008

Number

142

Co-Authors

LHR band emissions at mid-latitude and their relationship to ionospheric ELF hiss and relativistic electrons (2008)

Morioka, A., Oya, H., Obara, T., Miyoshi, Y. S., Nagata, K., ...

LHR band emissions observed at mid-latitude were investigated using data from the EXOS-C (Ohzora) satellite. A typical feature of the LHR band emissions is a continuous banded structure without...

LHR band emissions at mid-latitude and their relationship to ionospheric ELF hiss and relativistic electrons (2008)

Morioka, A., Oya, H., Obara, T., Miyoshi, Y. S., Nagata, K., ...

LHR band emissions observed at mid-latitude were investigated using data from the EXOS-C (Ohzora) satellite. A typical feature of the LHR band emissions is a continuous banded structure without...

$\pi N$ and $\pi\pi N$ Couplings of the $\Delta(1232)$ and its Chiral Partners (2008)

Nagata, K., Hosaka, A., Dmitrasinovic, V.

We investigate the interactions and chiral properties of the four spin-$\thalf$-baryons : $N^-(D_{13})$, $N^+(P_{13})$, $\Delta^+(P_{33})$ and $\Delta^-(D_{33})$ together with the nucleon. We...

Structure of the Nucleon and Roper Resonance with Diquark Correlations (2008)

Nagata, K., Hosaka, A.

We investigate the electric form factors of the nucleon and Roper resonance using a quark-diquark model. We find that the charge radii of the nucleon and Roper resonance are almost the same in size.

The mass of the nucleon in a chiral quark-diquark model (2004)

Nagata, K., Hosaka, A., Abu-Raddad, L. J.

The mass of the nucleon is studied in a chiral quark-diquark model. Both scalar and axial-vector diquarks are taken into account for the construction of the nucleon state. After the hadronization...

Crystal structure of a central stalk subunit C and reversible association/dissociation of vacuole-type ATPase (2004)

Iwata, M., Imamura, H., Stambouli, E., Ikeda, C., Tamakoshi, M., Nagata, K., ...

The vacuole-type ATPases (V-ATPases) exist in various intracellular compartments of eukaryotic cells to regulate physiological processes by controlling the acidic environment. The crystal structure...

Structure of the nuclear force in a chiral quark-diquark model (2003)

Nagata, K., Hosaka, A.

We discuss the structure of the nuclear force using a lagrangian derived from hadronization of a chiral quark and diquark model. A generalized trace log formula including meson and nucleon fields is...

Aurora-B regulates the cleavage furrow-specific vimentin phosphorylation in the cytokinetic process (2003)

Goto,H., Yasui,Y., Kawajiri,A., Nigg,E. A., Terada,Y., Tatsuka,M., ...

Aurora-B is an evolutionally conserved protein kinase that regulates several mitotic events including cytokinesis. We previously demonstrated the possible existence of a protein kinase that...

Aurora-B regulates the cleavage furrow-specific vimentin phosphorylation in the cytokinetic process (2003)

Goto, H., Yasui, Y., Kawajiri, A., Nigg, E. A., Terada, Y., Tatsuka, M., ...

Aurora-B is an evolutionally conserved protein kinase that regulates several mitotic events including cytokinesis. We previously demonstrated the possible existence of a protein kinase that...

Susceptibility, Magnetization Process and ESR Studies on the Helical Spin System RbCuCl$_{3}$ (2000)

Maruyama, S., Tanaka, H., Narumi, Y., Kindo, K., Nojiri, H., Motokawa, M., ...

The static and dynamic magnetic properties of an $S=1/2$ stacked triangular antiferromagnet RbCuCl$_{3}$ with a helical spin structure due to lattice distortion were investigated by susceptibility,...

Effect of Rhenium Addition on Fracture Toughness of Tungsten at Elevated Temperatures. (1998)

Mutoh, Y., Ichikawa, K., Nagata, K., Takeuchi, M.

Fracture toughness tests of tungsten and tungsten-rhenium alloy specimens were carried out at elevated temperatures. temperature dependence of fracture toughness and effect of rhenium content on...

A Comment on the Geometric Entropy and Conical Space (1996)

Hotta, M., Kato, T., Nagata, K.

It has been recently pointed out that a definition of the geometric entropy using the partition function in a conical space does not in general lead to a positive definite quantity. For a scalar...

ESR MODES IN HEXAGONAL ABX3-TYPE ANTIFERROMAGNETS (1988)

Tanaka, H., Teraoka, S., Kakehashi, E., Iio, K., Nagata, K.

ESR modes in the ground state of hexagonal ABX3-type antiferromagnets are discussed by taking a sixsublattice model for the spin structure. Results of ESR measurements performed on CsNiCl3, RbNiCl3...

ESR MODES IN HEXAGONAL ABX3-TYPE ANTIFERROMAGNETS (1988)

Tanaka, H., Teraoka, S., Kakehashi, E., Iio, K., Nagata, K.

ESR modes in the ground state of hexagonal ABX3-type antiferromagnets are discussed by taking a sixsublattice model for the spin structure. Results of ESR measurements performed on CsNiCl3, RbNiCl3...

ESR MODES IN HEXAGONAL ABX3-TYPE ANTIFERROMAGNETS (1988)

Tanaka, H., Teraoka, S., Kakehashi, E., Iio, K., Nagata, K.

ESR modes in the ground state of hexagonal ABX3-type antiferromagnets are discussed by taking a sixsublattice model for the spin structure. Results of ESR measurements performed on CsNiCl3, RbNiCl3...

Replication factor encoded by a putative oncogene, set, associated with myeloid leukemogenesis.

Nagata, K, Kawase, H, Handa, H, Yano, K, Yamasaki, M, Ishimi, Y, ...

DNA replication of the adenovirus genome complexed with viral core proteins is dependent on the host factor designated template activating factor I (TAF-I) in addition to factors required for...

In vivo analysis of the promoter structure of the influenza virus RNA genome using a transfection system with an engineered RNA.

Yamanaka, K, Ogasawara, N, Yoshikawa, H, Ishihama, A, Nagata, K

A system for the expression of a foreign gene derived from negative polarity RNA was developed using influenza virus, a negative-stranded RNA virus. From cDNA for the influenza virus RNA genome...

Cytochrome b5 potentiation of cytochrome P-450 catalytic activity demonstrated by a vaccinia virus-mediated in situ reconstitution system.

Aoyama, T, Nagata, K, Yamazoe, Y, Kato, R, Matsunaga, E, Gelboin, H V, ...

A cDNA containing the full coding region of human cytochrome b5 was inserted into a vaccinia virus cDNA expression vector. Infection of human thymidine kinase-minus (TK-) 143 cells in culture with...

Inhibitory action of lansoprazole and its analogs against Helicobacter pylori: inhibition of growth is not related to inhibition of urease.

Nagata, K, Takagi, E, Tsuda, M, Nakazawa, T, Satoh, H, Nakao, M, ...

The proton pump inhibitors omeprazole and lansoprazole and its acid-activated derivative AG-2000, which are potent and specific inhibitors of urease of Helicobacter pylori (K. Nagata, H. Satoh, T....

Growth inhibition of Ureaplasma urealyticum by the proton pump inhibitor lansoprazole: direct attribution to inhibition by lansoprazole of urease activity and urea-induced ATP synthesis in U. urealyticum.

Nagata, K, Takagi, E, Satoh, H, Okamura, H, Tamura, T

The proton pump inhibitors (PPIs) omeprazole and lansoprazole and the acid-activated analog of lansoprazole AG-2000, which potently inhibit the urease of Helicobacter pylori (K. Nagata, H. Satoh, T....

Actinobacillus actinomycetemcomitans Y4 capsular-polysaccharide-like polysaccharide promotes osteoclast-like cell formation by interleukin-1 alpha production in mouse marrow cultures.

Nishihara, T, Ueda, N, Amano, K, Ishihara, Y, Hayakawa, H, Kuroyanagi, T, ...

The mechanism of osteoclast-like cell formation induced by periodontopathic bacterium Actinobacillus actinomycetemcomitans Y4 (serotype b) capsular-polysaccharide-like polysaccharide (capsular-like...

A novel costimulatory factor for gamma interferon induction found in the livers of mice causes endotoxic shock.

Okamura, H, Nagata, K, Komatsu, T, Tanimoto, T, Nukata, Y, Tanabe, F, ...

Administration of monoclonal anti-CD3 antibody to mice treated with Propionibacterium acnes induced secretion of a high level of gamma interferon (IFN-gamma) into the circulation system, while it...

Potent inhibitory action of the gastric proton pump inhibitor lansoprazole against urease activity of Helicobacter pylori: unique action selective for H. pylori cells.

Nagata, K, Satoh, H, Iwahi, T, Shimoyama, T, Tamura, T

The gastric proton pump inhibitor lansoprazole, its active analog AG-2000, and omeprazole dose dependently inhibited urease activity extracted with distilled water from Helicobacter pylori cells; the...

Mechanism for inhibition of influenza virus RNA polymerase activity by matrix protein.

Watanabe, K, Handa, H, Mizumoto, K, Nagata, K

Influenza virus M1 protein has been shown to inhibit the transcription catalyzed by viral ribonucleoprotein complexes isolated from virions. Here, this inhibition mechanism was studied with the...

The DNA-binding properties of two heat shock factors, HSF1 and HSF3, are induced in the avian erythroblast cell line HD6.

Nakai, A, Kawazoe, Y, Tanabe, M, Nagata, K, Morimoto, R I

Avian cells express three heat shock transcription factor (HSF) genes corresponding to a novel factor, HSF3, and homologs of mouse and human HSF1 and HSF2. Analysis of the biochemical and cell...

HSF4, a new member of the human heat shock factor family which lacks properties of a transcriptional activator.

Nakai, A, Tanabe, M, Kawazoe, Y, Inazawa, J, Morimoto, R I, Nagata, K

Heat shock transcription factors (HSFs) mediate the inducible transcriptional response of genes that encode heat shock proteins and molecular chaperones. In vertebrates, three related HSF genes (HSF1...

Complex formation of human T-cell leukemia virus type I p40tax transactivator with cellular polypeptides.

Nagata, K, Ide, Y, Takagi, T, Ohtani, K, Aoshima, M, Tozawa, H, ...

We examined cellular components which associate with p40tax, the viral transactivation molecule of human T-cell leukemia virus type I. Such molecules were searched by immunoprecipitation with...

Activation of endogenous c-fos proto-oncogene expression by human T-cell leukemia virus type I-encoded p40tax protein in the human T-cell line, Jurkat.

Nagata, K, Ohtani, K, Nakamura, M, Sugamura, K

We examined the ability of the trans-acting factor p40tax of human T-cell leukemia virus type I (HTLV-I), which is thought to be a crucial molecule in T-cell transformation by HTLV-I, to activate...

Monoclonal antibodies against the native urease of Helicobacter pylori: synergistic inhibition of urease activity by monoclonal antibody combinations.

Nagata, K, Mizuta, T, Tonokatu, Y, Fukuda, Y, Okamura, H, Hayashi, T, ...

Monoclonal antibodies (MAbs) against the native urease of Helicobacter pylori NCTC 11637 were found to clearly inhibit the urease activity. Interestingly, synergistic inhibition by two MAbs...

Induction of murine gamma interferon production by lipopolysaccharide and interleukin-2 in Propionibacterium acnes-induced peritoneal exudate cells.

Okamura, H, Wada, M, Nagata, K, Tamura, T, Shoji, K

Lipopolysaccharide (LPS) induces high levels of gamma interferon (IFN-gamma) in the circulation of mice pretreated with heat-killed Propionibacterium acnes. The following results were obtained in the...

Purification of a factor which provides a costimulatory signal for gamma interferon production.

Nakamura, K, Okamura, H, Nagata, K, Komatsu, T, Tamura, T

A protein factor which induces high levels of gamma interferon (IFN-gamma) in resting splenic nonadherent cells was isolated from the sera of mice with generalized inflammation caused by endotoxic...

Undermethylation of interferon-gamma gene in human T cell lines and normal T lymphocytes.

Fukunaga, R, Matsuyama, M, Okamura, H, Nagata, K, Nagata, S, Sokawa, Y

The relative levels of DNA methylation at CCGG sequences within and around the interferon-gamma (IFN-gamma) gene in normal human tissues and cell lines were examined by Southern blot analysis using...

Endotoxin-induced serum factor that stimulates gamma interferon production.

Nakamura, K, Okamura, H, Wada, M, Nagata, K, Tamura, T

Serum from Mycobacterium bovis BCG-infected mice that had been challenged with lipopolysaccharide (LPS) exhibited a marked ability to induce gamma interferon (IFN-gamma) in cultures of spleen cells...

Coexpression of the collagen-binding stress protein HSP47 gene and the alpha 1(I) and alpha 1(III) collagen genes in carbon tetrachloride-induced rat liver fibrosis.

Masuda, H, Fukumoto, M, Hirayoshi, K, Nagata, K

HSP47 is a collagen-binding stress protein and is assumed to act as a collagen-specific molecular chaperone during the biosynthesis and secretion of procollagen in the living cell. The synthesis of...

Electroporation: application to human lymphoid cell lines for stable introduction of a transactivator gene of human T-cell leukemia virus type I.

Ohtani, K, Nakamura, M, Saito, S, Nagata, K, Sugamura, K, Hinuma, Y

Conditions were developed for stable introduction of foreign DNA into human lymphoid cell lines by electroporation. To introduce stably the p40 gene of human T-cell leukemia virus type I (HTLV-I)...

Promoter selectivity of Escherichia coli RNA polymerase: effect of base substitutions in the promoter -35 region on promoter strength.

Kobayashi, M, Nagata, K, Ishihama, A

A set of 18 variant lac UV5 promoters was constructed, each carrying a single base substitution within the -35 region (nucleotide positions from -36 to -31 relative to the transcription start site)....

DNA sequences required for the in vitro replication of adenovirus DNA.

Guggenheimer, R A, Stillman, B W, Nagata, K, Tamanoi, F, Hurwitz, J

Initiation of adenovirus (Ad) DNA replication occurs on viral DNA containing a 55-kilodalton (kDa) protein at the 5' terminus of each viral DNA strand and on plasmid DNAs containing the origin of Ad...

Isolation of human DNA sequences that bind to nuclear factor I, a host protein involved in adenovirus DNA replication.

Gronostajski, R M, Nagata, K, Hurwitz, J

Nuclear factor I is a 47,000-dalton protein isolated from human HeLa cells that is required for the in vitro replication of adenovirus DNA. This protein was previously shown to bind specifically to...

Adenovirus DNA replication in vitro: identification of a host factor that stimulates synthesis of the preterminal protein-dCMP complex.

Nagata, K, Guggenheimer, R A, Enomoto, T, Lichy, J H, Hurwitz, J

A protein factor that participates in the formation of a covalent complex between the 80,000-dalton precursor of the adenovirus (Ad) terminal protein (pTP) and 5'-dCMP has been isolated and...

Adult T-cell leukemia: antigen in an ATL cell line and detection of antibodies to the antigen in human sera.

Hinuma, Y, Nagata, K, Hanaoka, M, Nakai, M, Matsumoto, T, Kinoshita, K I, ...

Indirect immunofluorescence of certain human sera demonstrated an antigen(s) in the cytoplasm of 1--5% of the cells of a T-cell line, MT-1, from a patient with adult T-cell leukemia (ATL), which is...

Alternative 5' splice site selection induced by heat shock.

Takechi, H, Hosokawa, N, Hirayoshi, K, Nagata, K

The mouse HSP47 gene consists of six exons separated by five introns. Three HSP47 cDNAs differing only in their 5' noncoding regions have been reported. One of these alternatively spliced mRNAs was...

Cell-type-specific function of the C-type natriuretic peptide gene promoter in rat anterior pituitary-derived cultured cell lines.

Ohta, S, Shimekake, Y, Nagata, K

The promoter function of the human C-type natriuretic peptide (CNP) gene in various cultured cells was examined by transient transfection assays. The CNP promoter functioned very effectively in GH3...

HSP47: a tissue-specific, transformation-sensitive, collagen-binding heat shock protein of chicken embryo fibroblasts.

Hirayoshi, K, Kudo, H, Takechi, H, Nakai, A, Iwamatsu, A, Yamada, K M, ...

We report the isolation and characterization of a cDNA clone encoding HSP47, a transformation-sensitive heat shock protein that binds to collagen. A cDNA library was prepared from total RNA isolated...

Inhibition of the activation of heat shock factor in vivo and in vitro by flavonoids.

Hosokawa, N, Hirayoshi, K, Kudo, H, Takechi, H, Aoike, A, Kawai, K, ...

Transcriptional activation of human heat shock protein (HSP) genes by heat shock or other stresses is regulated by the activation of a heat shock factor (HSF). Activated HSF posttranslationally...

Site-specific DNA binding of nuclear factor I: analyses of cellular binding sites.

Gronostajski, R M, Adhya, S, Nagata, K, Guggenheimer, R A, Hurwitz, J

Nuclear factor I is a cellular site-specific DNA-binding protein required for the efficient in vitro replication of adenovirus DNA. We have characterized human DNA sequences to which nuclear factor I...

Adenovirus DNA replication in vitro: synthesis of full-length DNA with purified proteins.

Nagata, K, Guggenheimer, R A, Hurwitz, J

A protein required for the elongation of replicating intermediates of adenovirus (Ad) DNA to full length has been isolated and characterized. This factor, isolated from nuclear extracts of uninfected...

Specific binding of a cellular DNA replication protein to the origin of replication of adenovirus DNA.

Nagata, K, Guggenheimer, R A, Hurwitz, J

Nuclear factor I, a 47-kilodalton protein, purified from nuclear extracts of uninfected HeLa cells, is involved in the initiation and possibly the elongation of replicating adenovirus (Ad) DNA in...