132 results match your criteria: "Korea Polar Research Institute KOPRI[Affiliation]"
Biotechnol Lett
June 2014
Division of Life Sciences, Korea Polar Research Institute (KOPRI), 26, Songdomirae-ro, Yeonsu-gu, Incheon, 406-840, Republic of Korea.
A bacterium with lipolytic activity was isolated from the Chukchi Sea within the Arctic Ocean. The lipase BpL5 from the isolate, Bacillus pumilus ArcL5, belongs to subfamily 4 of lipase family I. The optimum pH and temperature of the recombinant enzyme BpL5, as expressed in Escherichia coli, were 9.
View Article and Find Full Text PDFExtremophiles
July 2013
Division of Life Sciences, Korea Polar Research Institute KOPRI, Incheon 406-840, Korea.
The hyperthermophilic endocellulase, EGPh (glycosyl hydrolase family 5) from Pyrococcus horikoshii possesses 4 cysteine residues forming 2 disulfide bonds, as identified by structural analysis. One of the disulfide bonds is located at the proximal region of the active site in EGPh, which exhibits a distinct pattern from that of the thermophilic endocellulase EGAc (glycosyl hydrolase family 5) of Acidothermus cellulolyticus despite the structural similarity between the two endocellulases. The structural similarity between EGPh and EGAc suggests that EGPh possesses a structure suitable for changing the position of the disulfide bond corresponding to that in EGAc.
View Article and Find Full Text PDFZ Naturforsch C J Biosci
April 2010
Polar BioCenter, Korea Polar Research Institute (KOPRI), Songdo Technopark, Songdo-dong 7-50, Yeonsu-gu, Incheon 406-840, South Korea.
The development of new antibacterial compounds is an urgent issue to meet the evolution of resistivity of pathogenic bacteria against the available drugs. The objective of this study was to investigate the antibacterial compounds from the Antarctic lichen species Ramalina terebrata. A total of five compounds, usnic acid, usimine A, usimine B, usimine C, and ramalin, were isolated by bioactivity guided-fractionation of the methanol extract of R.
View Article and Find Full Text PDFJ Microbiol Biotechnol
October 2008
Polar BioCenter, Korea Polar Research Institute (KOPRI), KORDI, Incheon 406-840, Korea.
Harmful algal blooms (HABs), commonly called red tides, are caused by some toxic phytoplanktons, and have made massive economic losses as well as marine environmental disturbances. As an effective and environment-friendly strategy to control HAB outbreaks, biological methods using marine bacteria capable of killing the harmful algae or algicidal extracellular compounds from them have been given attention. A new member of the gamma-Proteobacteria, Hahella chejuensis KCTC 2396, was originally isolated from the Korean seashore for its ability to secrete industrially useful polysaccharides, and was characterized to produce a red pigment.
View Article and Find Full Text PDFMol Cells
April 2008
Polar BioCenter, Korea Polar Research Institute (KOPRI), Korea Ocean Research and Development Institute (KORDI), Incheon 406-840, Korea.
Deschampsia antarctica is the only monocot that thrives in the tough conditions of the Antarctic region. It is an invaluable resource for the identification of genes associated with tolerance to various environmental pressures. In order to identify genes that are differentially regulated between greenhouse-grown and Antarctic field-grown plants, we initiated a detailed gene expression analysis.
View Article and Find Full Text PDFJ Microbiol
December 2007
Polar BioCenter, Korea Polar Research Institute (KOPRI), KORDI, Incheon, Republic of Korea.
Red algae are distributed globally, and the group contains several commercially important species. Griffithsia okiensis is one of the most extensively studied red algal species. In this study, we conducted expressed sequence tag (ESTs) analysis and synonymous codon usage analysis using cultured G.
View Article and Find Full Text PDFJ Microbiol
October 2006
Korea Polar Research Institute (KOPRI), KORDI, Ansan P.O.Box 29, Seoul 425-600, Republic of Korea.
As part of the long-term monitoring projects on Antarctic terrestrial vegetation in relation to global climate change, a lichen floristical survey was conducted around the Korean Antarctic Station (King Sejong Station), which is located on Barton Peninsula, King George Island, in January and February of 2006. Two hundred and twenty-five lichen specimens were collected and sixty-two lichen species in 38 genera were identified by morphological characteristics, chemical constituents, TLC analysis and ITS nucleotide sequence analysis.
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