Faculty Profiles - UEGUCHI, Chiharu

Papers - UEGUCHI, Chiharu

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Autoregulatory expression of the Escherichia coli hns gene encoding a nucleoid protein: H-NS functions as a repressor of its own transcription. Reviewed

Ueguchi C, Kakeda M, Mizuno T

Molecular & general genetics : MGG Vol. 236 ( 2-3 ) page： 171 - 8 1993.1

Insertional disruption of the nusB (ssyB) gene leads to cold-sensitive growth of Escherichia coli and suppression of the secY24 mutation. Reviewed

Taura T, Ueguchi C, Shiba K, Ito K

Molecular & general genetics : MGG Vol. 234 ( 3 ) page： 429 - 32 1992.9

[Structure and function of sequence directed DNA curvature]. Reviewed

Ueguchi C, Mizuno T

Tanpakushitsu kakusan koso. Protein, nucleic acid, enzyme Vol. 37 ( 10 ) page： 1631 - 40 1992.8

Multicopy suppression: an approach to understanding intracellular functioning of the protein export system. Reviewed

Ueguchi C, Ito K

Journal of bacteriology Vol. 174 ( 5 ) page： 1454 - 61 1992.3

[The sec genes of Escherichia coli]. Reviewed

Ueguchi C, Ito K

Seikagaku. The Journal of Japanese Biochemical Society Vol. 63 ( 4 ) page： 293 - 8 1991.4

Characterization of cold-sensitive secY mutants of Escherichia coli. Reviewed

Baba T, Jacq A, Brickman E, Beckwith J, Taura T, Ueguchi C, Akiyama Y, Ito K

Journal of bacteriology Vol. 172 ( 12 ) page： 7005 - 10 1990.12

Escherichia coli sec mutants accumulate a processed immature form of maltose-binding protein (MBP), a late-phase intermediate in MBP export. Reviewed

Ueguchi C, Ito K

Journal of bacteriology Vol. 172 ( 10 ) page： 5643 - 9 1990.10

Effects of mutations in heat-shock genes groES and groEL on protein export in Escherichia coli. Reviewed

Kusukawa N, Yura T, Ueguchi C, Akiyama Y, Ito K

The EMBO journal Vol. 8 ( 11 ) page： 3517 - 21 1989.11

The secY-rpmJ region of the spc ribosomal protein operon in Escherichia coli: structural alterations affecting secY expression. Reviewed

Ueguchi C, Wittekind M, Nomura M, Akiyama Y, Ito K

Molecular & general genetics : MGG Vol. 217 ( 1 ) page： 1 - 5 1989.5

Enhancement of meristem formation by bouquet-1, a mis-sense allele of the VERNALIZATION INDEPENDENCE 3 gene encoding a WD40 repeat protein in Arabidopsis thaliana. Reviewed

Naoto Takagi and Chiharu Ueguchi

Genes to Cells 2012.12

Cytokinin receptors are required for normal development of auxin-transporting vascular tissues in the hypocotyl but not in adventitious roots. Reviewed

Kuroha, T., Ueguchi, C., Sakakibara, H. and Satoh, S.

Vol. 47 page： 234-243 2006

RNA interference of the Arabidopsis putative transcription factor TCP16 gene results in abortion of early pollen development. Reviewed

Takeda, T., Amano, K., Ohto, M., Nakamura, K., Sato, S., Tabata, S. and Ueguchi, C.

Plant Molecular Biology Vol. 61 page： 165-177 2006

*Histidine kinase homologs that act as cytokinin receptors possess overlapping functions in the regulation of shoot and root growth in Arabidopsis. Reviewed

Nishimura C., Ohashi Y., Sato S., Kato T., Tabata S. and Ueguchi C.

The Plant Cell Vol. 16 page： 1365-1377 2004

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

Cytokinins are plant hormones that may play essential and crucial roles in various aspects of plant growth and development. To gain an insight into the molecular functions of the three AHK genes, AHK2, AHK3, and AHK4, we constructed a set of multiple ahk mutants. The ahk2 ahk4 and ahk3 ahk4 double mutants, as well as the ahk single mutants, grew normally, whereas the ahk2 ahk3 double mutants exhibited a semi-dwarf phenotype as to shoots, such as a reduced leaf size and a reduced influorescence stem length. The growth and development of the ahk2 ahk3 ahk4 triple mutant were markedly inhibited in various tissues and organs, including the roots and leaves in the vegetative growth phase, and the influorescence meristem in the reproductive phase. We showed that the inhibition of growth is associated with reduced meristematic activity of cells. Our results thus strongly suggest that the primary functions of AHK genes, and thus those of endogenous cytokinins, are triggering of the cell division and maintenance of the meristematic competence of cells to prevent subsequent differentiation until a sufficient number of cells has accumulated during organogenesis.

サイトカイニンシグナル伝達の分子機構と生物学的機能

上口智治

蛋白質　核酸　酵素 Vol. 49 ( 16 ) page： 2549ー2557 2004

*The OsTB1 gene negatively regulates lateral branching in rice Reviewed

Takeda T., Suwa Y., Suzuki M., Kitano H., Ueguchi-Tanaka M., Ashikari M., Matsuoka M. and Ueguchi C.

The Plant Journal Vol. 33 page： 513-520 2003

二成分制御系

上口智治

蛋白質核酸酵素増刊号「植物の形作り」 Vol. 47 page： 1711ー1716 2002.9

Negative control of rpoS expression by phosphoenolpyruvate: carbohydrate phosphotransferase system (PEP: PTS) in Escherichia coli Reviewed

Ueguchi C., Misonou N. and Mizuno T.

Journal of bacteriology Vol. 183 page： 520-527 2001

*The AHK4 gene involved in the cytokinin-signaling pathway as a direct receptor molecule in Arabidopsis thaliana Reviewed

Ueguchi C., Sato S., Kato T. and Tabata S.

Plant and Cell Physiology Vol. 42 page： 751-755 2001

LeuO expression in response to starvation for branched-chain amino acids Reviewed

Majumder, A., Fang, M., Tsai, K-J., Ueguchi, C., Mizuno, T., and Wu, H-Y.

Journal of Biological Chemistry Vol. 276 page： 19046-19051 2001

Escherichia coli ribosome-associated protein SRA, which increases during stationary phase Reviewed

Izutsu, K., Wada, C., Komine, Y., Sako, T., Ueguchi, C., Nakura, S., and Wada, A.

Journal of Bacteriology Vol. 183 page： 2765-2773 2001

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Papers - UEGUCHI, Chiharu