[HTML][HTML] Arabidopsis IRE1 catalyses unconventional splicing of bZIP60 mRNA to produce the active transcription factor

…, K Mishiba, E Suzuki, Y Shimada, Y Iwata, N Koizumi - Scientific reports, 2011 - nature.com
IRE1 plays an essential role in the endoplasmic reticulum (ER) stress response in yeast and
mammals. We found that a double mutant of Arabidopsis IRE1A and IRE1B (ire1a/ire1b) is …

[HTML][HTML] Periodic DNA methylation in maize nucleosomes and demethylation by environmental stress

N Steward, M Ito, Y Yamaguchi, N Koizumi… - Journal of Biological …, 2002 - ASBMB
When maize seedlings were exposed to cold stress, a genome-wide demethylation occurred
in root tissues. Screening of genomic DNA identified one particular fragment that was …

Producing decaffeinated coffee plants

S Ogita, H Uefuji, Y Yamaguchi, N Koizumi, H Sano - Nature, 2003 - nature.com
The demand for decaffeinated coffee is increasing because the stimulatory effects of
caffeine can adversely affect sensitive individuals by triggering palpitations, increased blood …

Plant transducers of the endoplasmic reticulum unfolded protein response

Y Iwata, N Koizumi - Trends in plant science, 2012 - cell.com
The unfolded protein response (UPR) activates a set of genes to overcome accumulation of
unfolded proteins in the endoplasmic reticulum (ER), a condition termed ER stress, and …

An Arabidopsis transcription factor, AtbZIP60, regulates the endoplasmic reticulum stress response in a manner unique to plants

Y Iwata, N Koizumi - … of the National Academy of Sciences, 2005 - National Acad Sciences
Analysis of transcripts of 75 genes encoding putative basic leucine zipper (bZIP) transcription
factors in the Arabidopsis genome identified AtbZIP60, which was induced by tunicamycin. …

Interplay between the unfolded protein response and reactive oxygen species: a dynamic duo

R Ozgur, B Uzilday, Y Iwata, N Koizumi… - … of experimental botany, 2018 - academic.oup.com
Secretory proteins undergo modifications such as glycosylation and disulphide bond formation
before proper folding, and move to their final destination via the endomembrane system. …

Arabidopsis bZIP60 Is a Proteolysis-Activated Transcription Factor Involved in the Endoplasmic Reticulum Stress Response

Y Iwata, NV Fedoroff, N Koizumi - The Plant Cell, 2008 - academic.oup.com
Proteins synthesized in the endoplasmic reticulum (ER) of eukaryotic cells must be folded
correctly before translocation out of the ER. Disruption of protein folding results in the induction …

Molecular characterization of two Arabidopsis Ire1 homologs, endoplasmic reticulum-located transmembrane protein kinases

N Koizumi, IM Martinez, Y Kimata, K Kohno… - Plant …, 2001 - academic.oup.com
A major response of eukaryotic cells to the presence of unfolded proteins in the lumen of the
endoplasmic reticulum (ER) is to activate genes that encode ER-located molecular …

The STT3a subunit isoform of the Arabidopsis oligosaccharyltransferase controls adaptive responses to salt/osmotic stress

…, F Li, MG McCully, I Mendoza, N Koizumi… - The Plant …, 2003 - academic.oup.com
Arabidopsis stt3a-1 and stt3a-2 mutations cause NaCl/osmotic sensitivity that is characterized
by reduced cell division in the root meristem. Sequence comparison of the STT3a gene …

Defects in IRE1 enhance cell death and fail to degrade mRNAs encoding secretory pathway proteins in the Arabidopsis unfolded protein response

…, Y Ogata, Y Shimada, N Koizumi - Proceedings of the …, 2013 - National Acad Sciences
The unfolded protein response (UPR) is a cellular response highly conserved in eukaryotes
to obviate accumulation of misfolded proteins in the endoplasmic reticulum (ER). Inositol-…