A5050500864- Heat shock proteins research
- Photosynthetic Processes and Mechanisms
- Plant Stress Responses and Tolerance
- Transgenic Plants and Applications
- Plant Molecular Biology Research
- Plant Reproductive Biology
- Protein Structure and Dynamics
- Ubiquitin and proteasome pathways
- Plant responses to water stress
- Plant tissue culture and regeneration
- Plant biochemistry and biosynthesis
- Bee Products Chemical Analysis
- Insect Resistance and Genetics
- Plant-Microbe Interactions and Immunity
- Seed Germination and Physiology
- Enzyme Structure and Function
- Cellular Mechanics and Interactions
- Protist diversity and phylogeny
- Plant nutrient uptake and metabolism
- DNA Repair Mechanisms
- Light effects on plants
- RNA and protein synthesis mechanisms
- Biocrusts and Microbial Ecology
- thermodynamics and calorimetric analyses
- Bacterial Genetics and Biotechnology
Seoul National University
2004-2018
Sookmyung Women's University
2005
Konkuk University
2005
Mokpo National University
2005
Korea Research Institute of Bioscience and Biotechnology
1995
Korea Institute of Science and Technology
1991-1992
University of California, San Diego
1988-1991
Michigan State University
1981-1983
Summary The floral transition in Arabidopsis is regulated by at least four flowering pathways: the long‐day, autonomous, vernalization, and gibberellin (GA)‐dependent pathways. Previously, we reported that MADS‐box transcription factor S UPPRESSOR OF O VEREXPRESSION C 1 (SOC1) integrates long‐day vernalization/autonomous Here, present evidences SOC1 also signaling from GA‐dependent pathway, a major pathway under non‐inductive short days. Under days, time of GA‐biosynthetic ‐signaling mutants...
Abstract Posttranscriptional RNA metabolism plays versatile roles in the regulation of gene expression during eukaryotic growth and development. It is mediated by a group binding proteins with distinct conserved motifs. In this study, an Arabidopsis (Arabidopsis thaliana) gene, designated FLK, was identified shown to encode putative protein K homology A mutant which FLK inactivated T-DNA insertion exhibited severe late flowering phenotype both long short days. The reversed gibberellin...
Abstract Profilin is a small actin-binding protein that regulates cellular dynamics of the actin cytoskeleton. In Arabidopsis (Arabidopsis thaliana), five profilins were identified. The vegetative class profilins, PRF1, PRF2, and PRF3, are expressed in organs. reproductive PRF4 PRF5, mainly pollen. this study, we examined role first intron expression profilin gene family using transgenic plants transient system. plants, PRF2 which represent profilins. promoter fused with β-glucuronidase...
Abstract Nodules are formed on legume roots as a result of signaling between symbiotic partners and in response to the activities numerous genes. We cloned fragments differentially expressed genes spot-inoculated soybean (Glycine max) roots. Many induced clones were similar known related oxidative stress, such thioredoxin β-carotene hydroxylase. The deduced amino acid sequences full-length cDNAs for hydroxylase those other species. In situ RNA hybridization revealed that gene is pericycle...
Small heat shock proteins (sHSPs) function as ATP-independent molecular chaperones, and although the production of sHSPs have often been described under stress, expression in fundamental developmental processes, such pollen seed development, also confirmed. Seed germination involves breaking dormancy resumption embryo growth that accompany global changes transcription, translation, metabolism. In many plants, is triggered simply by imbibition water; however, different seeds require...
A cDNA clone for a transcript preferentially expressed during an early phase of flooding was isolated from Nicotiana tabacum. Nucleotide sequencing the identified open reading frame that has high homology to previously reported glycine-rich RNA-binding proteins. The consists 157 amino acids with N-terminal RNA-recognition motif and C-terminal domain, thus designated as tabaccum protein-1 (NtGRP1)- Expression NtGRP1 upregu-lated under stress also increased, but at much lower levels,...
Abstract— An apparatus has been developed to measure phototactic movement in a population of amoebae Dictyostelium discoideum. Fluence–response curves white light show positive phototaxis below 100mW/m 2 . Higher intensities cause negative phototaxis. action spectrum, based on the zero‐crossing points fluence–response for monochromatic light, shows major peak at about 405nm and secondary maxima 450, 520, 580 640nm. This spectrum resembles spectra accumulations dispersal from traps that...
Thermotaxis by individual amoebae of Dictyostelium discoideum on a temperature gradient is described. These show positive thermotaxis at temperatures between 14 degrees C and 28 shortly (3 hr) after food depletion. Increasing time the reduces thermotactic response lower gradients (midpoint 14, 16, 18 C), an apparent negative 12 hr gradient. The curve for "wild-type" 16 similar to that shown pseudoplasmodia. Growth different causes shift in amoebae. This adaptation Two mutants thermotaxis,...
A cDNA clone, designated as Griffithsia japonica cyclophilin-1 (GjCyp-1), was isolated by differential screening of a library for red alga, G. japonica. The transcript that corresponded to GjCyp-1 abundant in vegetative, male, and tetrasporangial thalli, but only the basal level detected female gametophytes. Determination nucleotide sequence identified an open reading frame (ORF), which shared high homologies with cyclophilins were previously reported other organisms. Currently available...
Members of the multifunctional Cyp family have been isolated from a wide range organisms. However, few functional studies performed on role these proteins as chaperones in red alga. For studying function cDNA GjCyp-1 alga (Griffithsia japonica), we expressed and purified recombinant containing hexahistidine tag at amino-terminus Escherichia coli. An fusion protein, H6GjCyp-1 maintained stability E. coli up to 50°C. bioassay for H6GjCyp-1, viability cells overexpressing was compared with that...
Seven genomic clones of tobacco (Nicotiana tabacum W38) cytosolic class I small heat shock proteins (sHSPs), probably representing all members in the class, were isolated and found to have 66 92% homology between their nucleotide sequences. Even though seven sHSP genes showed shock-responsive accumulation transcripts proteins, each member discrepancies abundance timing expression upon high-temperature stress. This was mainly result transcriptional regulation during mild stress conditions...