• Title/Summary/Keyword: Korea Polar Research Institute

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Fluorescent and Luminescent Proteins Derived from Marine Organisms: Functions and Applications

  • Sehyeok, Im;Jisub, Hwang;Hackwon, Do;Bo-Mi, Kim;Sung Gu, Lee;Jun Hyuck, Lee
    • Journal of Marine Life Science
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    • v.7 no.2
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    • pp.74-85
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    • 2022
  • Organisms constituting a large proportion of marine ecosystems, ranging from bacteria to fish, exhibit fluorescence and bioluminescence. A variety of marine organisms utilize these biochemically generated light sources for feeding, reproduction, communication, and defense. Since the discovery of green fluorescent protein and the luciferin-luciferase system more than a century ago, numerous studies have been conducted to characterize their function and regulatory mechanism. The unique properties of fluorescent and bioluminescent proteins offer great potential for their use in a broad range of applications. This short review briefly describes the functions and characteristics of fluorescent and bioluminescent proteins, in addition to summarizing the recent status of their applications.

Development of Web Based GIS for Polar Ocean Research (극지 해양환경 연구를 위한 웹GIS 구축)

  • CHI, Jun-Hwa;HYUN, Chang-Uk;KIM, Hyun-Cheol;JOO, Hyoung-Min;YANG, Eun-Jin;PARK, Ho-Joon;KANG, Sung-Ho
    • Journal of the Korean Association of Geographic Information Studies
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    • v.20 no.1
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    • pp.15-25
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    • 2017
  • In recent years, polar research has been focused on climate change, natural resources, and development of a new North Pole Route. Since 2010, the Korea Polar Research Institute has been collecting various in situ data from the Arctic/Antarctic oceans using ARAON, which is the first effort of Korea toward leading global polar research. As a part of these activities, a web-based GIS service was developed to collect in situ data and to standardize data formats. Visualizations of in situ measurements and thematic maps were also developed to improve both the quantitative and qualitative quality of polar ocean research, and to increase accessibility of polar oceanographic data. This system will ultimately share all of the data acquired from the Arctic/Antarctic oceans with international research groups.

Ground-based Observations of the Polar Region Space Environment at the Jang Bogo Station, Antarctica

  • Kwon, Hyuck-Jin;Lee, Changsup;Jee, Geonhwa;Ham, Young-Bae;Kim, Jeong-Han;Kim, Yong Ha;Kim, Khan-Hyuk;Wu, Qian;Bullett, Terence;Oh, Suyeon;Kwak, Young-Sil
    • Journal of Astronomy and Space Sciences
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    • v.35 no.3
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    • pp.185-193
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    • 2018
  • Jang Bogo Station (JBS), the second Korean Antarctic research station, was established in Terra Nova Bay, Antarctica ($74.62^{\circ}S$ $164.22^{\circ}E$) in February 2014 in order to expand the Korea Polar Research Institute (KOPRI) research capabilities. One of the main research areas at JBS is space environmental research. The goal of the research is to better understand the general characteristics of the polar region ionosphere and thermosphere and their responses to solar wind and the magnetosphere. Ground-based observations at JBS for upper atmospheric wind and temperature measurements using the Fabry-Perot Interferometer (FPI) began in March 2014. Ionospheric radar (VIPIR) measurements have been collected since 2015 to monitor the state of the polar ionosphere for electron density height profiles, horizontal density gradients, and ion drifts. To investigate the magnetosphere and geomagnetic field variations, a search-coil magnetometer and vector magnetometer were installed in 2017 and 2018, respectively. Since JBS is positioned in an ideal location for auroral observations, we installed an auroral all-sky imager with a color sensor in January 2018 to study substorms as well as auroras. In addition to these observations, we are also operating a proton auroral imager, airglow imager, global positioning system total electron content (GPS TEC)/scintillation monitor, and neutron monitor in collaboration with other institutes. In this article, we briefly introduce the observational activities performed at JBS and the preliminary results of these observations.

Characterization of a Chitinase Gene and Screening of Cold Active Chitinase from Polar Microorganisms (극지유래 저온활성 Chitinase 생산균주의 스크리닝과 Chitinase 유전자 클로닝)

  • Park, Yu Kyung;Kim, Jung Eun;Lee, Hyoungseok;Kim, Ji Hyun;Park, Ha Ju;Kim, Dockyu;Park, Mira;Yim, Joung Han;Kim, Il-Chan
    • Korean Journal of Microbiology
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    • v.48 no.4
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    • pp.293-297
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    • 2012
  • Of the 169 strains of microorganisms stored in Polar and Alpine Microbial Collection of Korea Polar Research Institute, 27 strains were selected for their chitinase activity on ZoBell plates supplemented with 0.4% colloidal chitin. Among them, PAMC 21693 strain have shown the highest chitinolytic enzyme activity toward pNP-$(GlcNAc)_1$ at low temperature and the highest growth rate at $4^{\circ}C$. We cloned a full-length chitinase gene of 2,857 bp which contains an open reading frame of 2,169 bp encoding 872-amino acid polypeptide. Recombinant chitinase protein was expressed in E. coli and its molecular weight was confirmed 96 kDa. In this paper, we suggest the potential use of cold-active chitinase from polar microorganisms in the field of biotechnology.