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Han Du-Gyeong,Jeong Ji-A,Lee Sung-Kyoung,Kim Seong-Han,Jeon Se-Mi 한국미생물·생명공학회 2024 한국미생물·생명공학회지 Vol.52 No.2
This study aimed to confirm the induction of resistance to other drug classes by treating Mycobacterium abscessus with moxifloxacin, a fluoroquinolone used for treating nontuberculous mycobacteria infection, and to obtain genetic data for improving treatment. The reads were assembled and analyzed using reference strain sequence data, and the whole-genome and transcriptome sequences of four strains (MD2, MD4, MD6, and MD8) were reported. Antibiotic resistance was not induced by moxifloxacin treatment; however, transcriptomic analysis revealed that the expression of genes responding to stress was upregulated.
Han, Du-Gyeong,Ryu, Ji-Hyoung,Chae, Jeong-Byoung,Kim, Dong-Woo,Kwon, Chan-Ho,Choi, Kyoung-Seong Elsevier 2018 Acta Tropica Vol.183 No.-
<P><B>Abstract</B></P> <P>Global warming has increased the incidence and risk of tick-borne diseases in domestic animals and humans in the Republic of Korea (ROK). In this study, we investigated the prevalence of <I>Anaplasma phagocytophilum</I> in Holstein cattle (n = 214) in the ROK using specific PCR assays. <I>A. phagocytophilum</I> infection was detected in only two animals (0.93%, 2/214). Our findings showed that PCR assay using the 16S rRNA gene, but not <I>groEL</I>, was suitable for detection of <I>A. phagocytophilum</I> in cattle. Phylogenetic analysis based on the16S rRNA gene showed that <I>A. phagocytophilum</I> was divided into two clades. Clade 1 included Korean isolates, such as those from dogs, cats, Korean water deer, and ticks, while <I>A. phagocytophilum</I> identified in Holstein cattle formed clade 2. Our results suggest that there is genetic variability among isolates of <I>A. phagocytophilum</I> circulating in the ROK. This is the first study to report <I>A. phagocytophilum</I> infection in Holstein cattle in the ROK. As <I>A. phagocytophilum</I> has zoonotic potential, additional epidemiological studies are needed to investigate the prevalence and genetic characterization of <I>A. phagocytophilum</I> from different regions and hosts.</P>
Synthesis of Tetrahydrocarbazole Derivatives as Potent β3-Adrenoceptor Agonists
Jae Du Ha,Seung Kyu Kang,Hyae-Gyeong Cheon,Joong-Kwon Choi* 대한화학회 2004 Bulletin of the Korean Chemical Society Vol.25 No.12
A series of 2-(3-chlorophenyl)-2-hydroxyethylamine derivatives containing a tetrahydrocarbazole linker were prepared and evaluated for their β3-adrenoceptor agonistic activity. Several compounds showed potency comparable to CL-316243.
신경연 ( Gyeong Yeon Shin ),최혜정 ( Hye Jung Choi ),강양래 ( Yang-rae Kang ),남기두 ( Ki-du Nam ),송주영 ( Ju Yeong Song ),주우홍 ( Woo Hong Joo ) 한국미생물생명공학회(구 한국산업미생물학회) 2017 한국미생물·생명공학회지 Vol.45 No.2
본 연구에서는 동시당화발효공정으로 바이오에탄올을 생산하기 위하여 바이오캡슐 형성을 시도하였다. 다수의 당화곰팡이 균주들과 발효 효모 균주들이 먼저 탐색되었다. Aspergillus sp. BCNU 6200, Penicillium sp. BCNU 6201및 P. chrysogenum KACC 44363이 α-amylase와 glucoamylase와 같은 당화 효소를 우수하게 생산하는 균주이었으며, Saccharomyces cerevisiae IFO-M-07이 조사된 균주 중에서 가장 에탄올 생산능이 높았다. 다음으로 pellet 형성 및 바이오 캡슐 형성을 위한 최적 조건을 평가하였다. 모든 조사된 곰팡이 모두 pellet을 형성하였으며, 바이오캡슐의 최적조건은 28℃, 120 rpm이었다. 최종적으로 형성된 바이오캡슐을 이용하여 동시당화발효를 수행하여, Aspergillus sp. BCNU 6200의 바이오캡슐(Aspergillus sp. BCNU 6200 +S. cerevisiae IFO-M-07)이 10일간 발효시 30℃, 120 rpm에서3.9%의 에탄올을 생산함을 확인하였다. 본 실험 결과는 동시 당화발효 공정으로 바이오에탄올을 생산하는데 있어서 바이오캡슐을 활용함에 관한 유용한 정보를 제공하고 있다. For the production of bioethanol by the synchronous saccharification and fermentation (SSF) process, bio-capsule formation was attempted. Many saccharifying fungal strains and fermentative yeast strains were first screened. Aspergillus sp. BCNU 6200, Penicillium sp. BCNU 6201, and P. chrysogenum KACC 44363 were found to be excellent producers of saccharifying enzymes such as α-amylase and glucoamylase. Saccharomyces cerevisiae IFO-M-07 showed the highest ethanol productivity among the tested strains. Secondly, we determined the optimal conditions for pellet formation, and those for bio-capsule formation. All the tested fungal strains formed pellets, and the optimal conditions for bio-capsule formation were 28℃ and 120 rpm. Lastly, SSF process was performed using a bio-capsule. An ethanol yield of 3.9% was achieved by using the Aspergillus sp. BCNU 6200 bio-capsule (Aspergillus sp. BCNU 6200 + S. cerevisiae IFO-M-07) at 30℃ with shaking at 120 rpm during the 10 days of incubation. The results provide useful information on the application of a bio-capsule in bioethanol production under the SSF process.
벼의 무기성분에 대한 양적형질좌 확인과 이온체 간 상호작용에 관한 연구
김경진 ( Gyeong-jin Kim ),이상범 ( Sang-beom Lee ),임성진 ( Sung-jin Lim ),이유지 ( Yu-ji Lee ),최근 ( Geun-hyoung Choi ),류송희 ( Song-hee Ryu ),이효섭 ( Hyo-sub Lee ),신중두 ( Jung-du Shin ),박용진 ( Yong-jin Park ),박상원 ( Sa 한국환경농학회 2019 한국환경농학회 학술대회집 Vol.2019 No.-
Minerals have been a subject of study in crops to solve nutrient and protein deficiencies as well as food safety problems. However, the interactions between functional minerals and toxic minerals, and their mechanisms have not yet been fully clarified. For this purpose, interactions among inorganic components were analyzed through ecotypes of a rice core population with diverse genetic characteristics in this study. Inorganic components in the rice core population were analyzed by inductively coupled plasma mass spectrometry (ICP-MS 7700E, Agilent Technologies, U.S.), and statistical analysis was conducted by SAS (Statistical Analysis System University Edition). In addition, candidate genes involved in functional minerals as well as Cd, As, and Pb were identified by genome-wide association studies (GWAS). In both non-contaminated and contaminated soils, interaction of inorganic elements was more active in Japonica than in Indica and Aus. Mg, Fe, Cu, Zn, Mn, Co, Ca and Na have a significant correlation at the p <0.01 level in both Japonica and Indica. In addition, quantitative traits loci for Mg, Fe, Cu, Zn, Mn, Co, Ca, Na and heavy metal were identified from GWAS results. According to the results of this study, interactions between functional and non-functional minerals with toxicity were dependent on ecotype. Therefore, further study is required on the genetic factors and their mechanism, which are specific interaction of the inorganic components in Indica and Japonica.