Sukwon Choi

ORCID: 0000-0001-9372-1947
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Research Areas
  • Energy Efficient Wireless Sensor Networks
  • Plant Molecular Biology Research
  • Energy Harvesting in Wireless Networks
  • Nanocluster Synthesis and Applications
  • Advanced biosensing and bioanalysis techniques
  • Advanced Nanomaterials in Catalysis
  • IoT and Edge/Fog Computing
  • Light effects on plants
  • Video Surveillance and Tracking Methods
  • MicroRNA in disease regulation
  • Photosynthetic Processes and Mechanisms
  • IoT-based Smart Home Systems
  • Ubiquitin and proteasome pathways
  • Plant nutrient uptake and metabolism
  • Target Tracking and Data Fusion in Sensor Networks
  • Speech and Audio Processing
  • Context-Aware Activity Recognition Systems
  • Embedded Systems Design Techniques
  • Genomics and Phylogenetic Studies
  • RNA Research and Splicing
  • RNA modifications and cancer
  • Plant Genetic and Mutation Studies
  • Mobile Ad Hoc Networks
  • Bone and Dental Protein Studies
  • Ginseng Biological Effects and Applications

Texas A&M University
2022-2024

Mitchell Institute
2024

Yonsei University
2008-2023

Seoul National University
2011

Korea Electronics Technology Institute
2011

Pohang University of Science and Technology
2007-2008

Wireless sensor networks equipped with various gas sensors have been actively used for air quality monitoring. Previous studies typically explored system issues that include middleware or networking performance, but most research has barely considered the details of hardware and software node itself. In this paper, we focus on design implementation a board pollutant monitoring applications. Several are discussed to explore possibilities practical WSN-based pollution system. Through extensive...

10.3390/s91007970 article EN cc-by Sensors 2009-10-12

This paper presents the design principles, implementation, and evaluation of RETOS operating system which is specifically developed for micro sensor nodes. has four distinct objectives, are to provide (1) a multithreaded programming interface, (2) resiliency, (3) kernel extensibility with dynamic reconfiguration, (4) WSN-oriented network abstraction. system, hence it provides commonly used thread model interface developers. We have various implementation techniques optimize performance...

10.1145/1236360.1236381 article EN 2007-01-01

Three DNA/AgNC probes with spectrally distinctive green, red and near-infrared emission are used to show a proof of concept for rapid, single-step, solution-phase multiplex miRNA detection method.

10.1039/c3an02150e article EN The Analyst 2014-01-01

Phosphorylation can quickly switch on/off protein functions. Here, we reported pre-mRNA processing 4 kinase A (PRP4KA), and its paralogs interact with Serrate (SE), a key factor in RNA processing. PRP4KA phosphorylates at least five residues of SE vitro vivo. Hypophosphorylated, but not hyperphosphorylated, variants could readily rescue se phenotypes Moreover, hypophosphorylated had stronger binding affinity to microprocessor component HYL1 were more resistant degradation by 20 S proteasome...

10.1126/sciadv.abm8435 article EN cc-by-nc Science Advances 2022-03-25

MicroRNAs (miRNAs), small non-coding RNA molecules, are important biomarkers for research and medical purposes. Here, we describe the development of a fast simple method using highly fluorescent oligonucleotide-silver nanocluster probes (DNA/AgNCs) to efficiently detect specific miRNAs. Due great sequence diversity miRNAs in humans other organisms, uniform strategy miRNA detection is attractive. The concept presented an oligonucleotide-based locking-to-unlocking system that can be endowed...

10.1093/nar/gkv1377 article EN cc-by Nucleic Acids Research 2015-12-17

Intrinsically disordered proteins (IDPs) SAID1/2 are hypothetic dentin sialophosphoprotein-like proteins, but their true functions unknown. Here, we identified as negative regulators of SERRATE (SE), a core factor in miRNA biogenesis complex (microprocessor). Loss-of-function double mutants said1; said2 caused pleiotropic developmental defects and thousands differentially expressed genes that partially overlapped with those se. also displayed increased assembly microprocessor elevated...

10.1073/pnas.2216006120 article EN cc-by-nc-nd Proceedings of the National Academy of Sciences 2023-03-27

Significance HYPONASTIC LEAVES 1 (HYL1)-CLEAVAGE SUBTILASE (HCS1) is a novel negative regulator of microRNA (miRNA) biogenesis that degrades HYL1 in the cytoplasm. Furthermore, cytoplasm CONSTITUTIVE PHOTOMORPHOGENIC (COP1) E3 ligase inhibit HCS1-mediated degradation. The COP1-HYL1-HCS1 network may integrate two essential cellular pathways: miRNA-biogenetic pathway and light signaling pathway. Our finding suggests regulatory system.

10.1073/pnas.2116757119 article EN cc-by-nc-nd Proceedings of the National Academy of Sciences 2022-02-04

The structural shift of a DNA hairpin-dimer is as important the sequence in determining fluorescent properties DNA-stabilized silver nanoclusters (DNA/AgNCs).

10.1039/c8nr06186f article EN Nanoscale 2018-01-01

MicroRNAs (miRNAs) are small regulatory RNAs (size ∼21 nt to ∼25 nt) which regulate a variety of important cellular events in plants, animals and single cell eukaryotes. Especially because their use diagnostics human diseases, efforts have been directed towards the invention rapid, simple sequence selective detection method for miRNAs. Recently, we reported an innovative determination miRNA levels using red fluorescent properties DNA/silver nanoclusters (DNA/AgNCs). Our is based on...

10.1088/0957-4484/25/4/045101 article EN Nanotechnology 2014-01-06

MicroProteins are small, single-domain proteins that regulate multidomain by sequestering them into novel, often nonproductive, complexes. Several microProteins have been identified in plants and animals, most of which negatively transcription factors. MicroProtein candidates potentially target a wide range different protein classes were recently computational approach. Here, we classified all Arabidopsis (Arabidopsis thaliana) developed synthetic microProtein approach to specific classes,...

10.1104/pp.17.01743 article EN PLANT PHYSIOLOGY 2018-01-30

RANKL plays an essential role in mammary gland development during pregnancy. However, the molecular mechanism by which RANK signaling leads to is largely unknown. We report here that stimulation induces phosphorylation of Id2 at serine 5, nuclear retention Id2. In lactating Id2Tg; RANKL−/− mice, was not phosphorylated and localized cytoplasm. addition, Id2S5ATg Id2S5A (with 5 mutated alanine) exclusively cytoplasm epithelial cells (MECs), while endogenous nucleus. Intriguingly, expression...

10.1128/mcb.05646-11 article EN Molecular and Cellular Biology 2011-09-27

A pipeline can be damaged through a variety of ways and means. If the damage is directly connected to safety problems, an urgent need continuously monitor exists. For such continuous monitoring, wireless sensor network has recently been regarded as solution. However, existing techniques consume large amount energy, it therefore very hard in practice employ nodes that have limited energy resources. In this paper, we propose monitoring system based on piezoelectric sensors replace...

10.1109/jsen.2011.2177656 article EN IEEE Sensors Journal 2011-12-02

This paper presents the design principles, implementation, and evaluation of RETOS operating system which is specifically developed for micro sensor nodes. has four distinct objectives, are to provide (1) a multithreaded programming interface, (2) resiliency, (3) kerel extensibility with dynamic reconfiguration, (4) WSN-oriented network abstraction. system, hence it provides commonly used thread model interface developers. We have various implementation techniques optimize performance...

10.1109/ipsn.2007.4379674 article EN 2007-04-01

This demonstration shows the programming development suite of RETOS operating system for sensor networks, which provides a robust and multithreaded interface to application programmers. We first demonstrate how build kernel on TI MSP430, Atmel ATmega 128 Chipcon CC2430 family microcontrollers. The or module is then compiled disseminated, via wireless channel, target motes. GUI-based RMon network management tool also demonstrated monitor networked sensors, even control system's parameters...

10.1145/1236360.1236439 article EN 2007-01-01

10.1016/j.micpro.2005.04.001 article EN Microprocessors and Microsystems 2005-05-15

Wireless sensor network technology has found diverse applications in numerous fields. As the networking is refined many ways, need for system modulation with effective performance becomes essential. A multitude of architectures, which includes abstraction and layering, been proposed to solve at operating level. However, previous efforts do not qualify architecture required by networking, since they are aimed hardware or protocol-based layering. In this paper, we classify developers into...

10.1109/mobiq.2006.340439 article EN 2006-07-01

Recent progress in Wireless Sensor Networks technology has enabled many complicated real-world applications. Some of the applications demand a non-trivial amount computation; some run multiple tasks concurrently on sensor node. Supporting highly concurrent, heterogeneous, and computation-oriented may require adequate functionality operating system. Multi-threaded systems for networks have recently been developed to offer an alternative programming environment conventional event-driven...

10.1109/sahcn.2007.4292825 article EN 2007-06-01
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