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Cloning and Characterization of the Lactococcus lactis subsp.lactis ATCC 7962 ptsHI Operon
Kim, Tea Youn,Park, Rae Jun,Chang, Hae Choon,Chung, Dae Kyun,Lee, Jong Hoon,Lee, Hyong Joo,Kim, Jeong Hwan 한국미생물 · 생명공학회 2000 Journal of microbiology and biotechnology Vol.10 No.6
The ptsH and ptsl genes of Lactococcus lactis subsp. lactis ATCC 7962 (L. lactis 7962), encoding the general proteins of phosphotransferase system (PTS) components, HPr and enzyme I, respectively, were cloned and characterized. A 1.3kb PCR product was obtained using a primer set that was hybridized to the internal region of the L. lactis 7962 ptsHI genes and then subcloned into a low-copy number vector, pACYC 184. The 5' upstream and 3' downstream regions from the 1.3kb fragment were subsequently cloned using the chromosome walking method. The complete ptsHI operon was constructed and the nucleotide sequences determined. Two ORFs corresponding to HPr (88 amino acids) and enzyme I (575 amino acids) were located. The ptsHl genes of LL lactis 7962 showed a very high homology (84-90%) with those genes from other Gram-positive bacteria. A primer extension analysis showed that the transcription started at either one of two adjacent bases upstream of the start codon. Using a Northern analysis, two transcripts were detected; the first, a 0.3kb transcript corresponding to ptsH and the second, a 2kb transcript corresponding to ptsH and ptsl. The transcription level of ptsH was higher than that of ptsl. The concentration of the ptsH transcript in cells grown on glucose was similar to that in cells grown on lactose, yet higher than that in cells grown on galactose. The ptsl transcript was scarcely detected in cells grown on lactose or galactose. The results of a sequence analysis and Northern blot confirmed that the ptsH and ptsI genes of L. lactis 7962 were arranged in an operon like other known ptsHI genes and the expression of the ptsHI genes was regulated at the transcriptional level in response to the carbon source.
김용태(Yong-Tea Kim),김양균(Yang-Kyun Kim) 대한치과의사협회 2010 대한치과의사협회지 Vol.48 No.2
Objectives : The study explored perceptional gap of dentists and their employees between expectation and satisfaction. Methods : For analysis, the study surveyed 407 employees and 91 dentists on their expectation and satisfaction depending on expectation. Results : When the satisfaction on a question was lower than expectation; the rate of sufficiency was below 100%, it is necessary to improve on the question. Contrarily when the satisfaction on a question was higher than expectation; the rate of sufficiency was upper 100%, it is necessary to continuously support the question. The most of satisfaction of employees on their dentists and their organization were lower than employees"s expectation of those. The most of satisfaction of dentists on their own and employees were lower than dentists"s expectation of those as similar as employees cases, It means that all of questions need to improve continuously. Conclusions : The issues for prior decision to change these phenomena are 1) improvement of communication each other, 2) recovery of credence each other, and 3) leadership style change from authoritarian to consideration.
어병세균 Edwardsiella tarda에 대한 한약재 추출물의 항균활성
김아라 ( Ah Ra Kim ),김도균 ( Do Kyun Kim ),변태환 ( Tea Hwan Byun ),조은지 ( Eun Jee Jo ),이은우 ( Eun Woo Lee ),권현주 ( Hyun Ju Kwon ),김병우 ( Byung Woo Kim ),김태훈 ( Tae Hoon Kim ),이경본 ( Kyung Bon Lee ),김영만 ( Young Man 한국식품저장유통학회(구 한국농산물저장유통학회) 2011 한국식품저장유통학회지 Vol.18 No.1
The methanol extracts of 19 commercial herb medicines was analyzed to antibacterial activities against Edwardsiella tarda, causing several fish diseases. Rhus javanica showed most strong antibacterial activity against E. tarda and Escherichia coli. Methanol extract of R. javanica was further extracted using several organic solvents having different polarity. Extract from ethyl acetate fraction showed strong activity against E. tarda as well as E. coli. Minimal inhibitory concentration, MIC of R. javanica extract was measured and resulted showing 64 ㎍/㎖ for E. tarda and 256 ㎍/㎖ for E. coli. It is needed that, from these results, further purification and isolation of reposible compound of these activities and further study on the synergy effect using combination with antibiotics against pathogenic bacteria.
페그인터페론 알파-2a에 무반응인 환자에서 페그인터페론 알파-2b로 치유된 만성 C형 간염 1예
서광원,김태균,김지현,박성재,박은택,이연재,이상혁,설상영 인제대학교 2007 仁濟醫學 Vol.28 No.-
페그인터페론과 리바비린의 병합요법은 현재 만성 C형 간염의 표준치료로서 유전자형과 체중에 따라 치료기간과 용량에 약간의 차이가 있고 치료기간도 24주, 48주로 단순화 되어있다. 현재의 치료가 기존의 인터페론과 리바비린의 병합요법보다 효과가 많이 높아졌으나 임상에서 치료에 무반응인 환자들을 볼 수 있다. 만성 C형간염 치료 시 무반응인 경우도 환자에게 맞는 맞춤형 치료를 시도해 봄으로써 지속적 바이러스 반응을 높일 수 있을 것으로 생각되어 적정치료를 위한 노력들이 계속되고 있다. 저자들은 페그인터페론 알파-2a로 치료하다가 무반응인 환자에서 페그인터페론 알파-2b로 바꾸어 치료후 바이러스 지속반응을 보인 환자 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Combination therapy with peginterferon(PEG-IFN) and ribavirin is standard treatment for patients with chronic hepatitis C. Nonresponse to treatment is defined as the failure to achieve a 2-log(IU/ml) decline in serum HCV RNA during the first 12 weeks of the therapy. Nonresponders rarely have further decline in serum HCV RNA with the continued therapy and are unlikely to respond during retreatment. The length and shape of each polyethylene glycol(PEG) moiety are crucial in determining the effect on pharmacokinetic and phamacodynamic properties. PEG-IFN alfa-2b has the advantage of weight-adjusted dosing and better extravascular tissue infiltration. We report here a case of an obese women who was a nonresponder to previous treatment with PEG-IFN alfa-2a during the first 16 weeks, but achieved a sustained viral response to PEG-IFN alfa-2b during the next 16 weeks for chronic hepatitis C infection.
김윤섭(Yun-Sub Kim),김태균(Tea-Kyun Kim),유정연(Jung-Yeon Yu),이규철(Kyu-Chul Lee) 한국정보과학회 2009 한국정보과학회 학술발표논문집 Vol.36 No.1
시간이 지날수록 처리해야 하는 정보가 점점 늘어나고 있어 각 분야의 온톨로지를 구축하여 보다 빠르고 정확한 정보를 얻으려는 노력이 시도되고 있다. 하지만 서비스 발견에 있어서의 몇 가지 문제점이 존재하였다. 서비스의 내부정보 검색의 어려움과 서비스 수행과정의 상세 정보를 알 수 없다는 문제점, 프로세스의 단순한 개념만을 검색한다는 문제점이 존재한다. 따라서 기존의 온톨로지 편집기인 프로티지에 새로운 그래프 형태의 뷰어시스템을 보완함으로써 서비스 각 계층의 정보표현과 프로세스의 구조를 그래프로 서비스의 내용을 사용자들에게 한 단계 더 높은 차원의 정보를 제공하고 그 서비스의 처리과정과 세부구조를 뷰어측면에서 접근하는 시스템을 개발하였다. 이러한 뷰어시스템을 통해 서비스 발견의 문제점을 해결하고 사용자 측면에서 효율적인 정보처리와 정보의 질을 높이는 방향으로 활용 될 수 있을 것이다.
장비에 따른 3차원 공간정보 품질향상 요인추출 및 집단 간 선호도에 관한 연구
오민균,배상태,김태우,이정일,Oh, Min-Kyun,Bea, Sang-Tea,Kim, Tea-Woo,Lee, Jung-Il 한국국토정보공사 공간정보연구원 2016 지적과 국토정보 Vol.46 No.1
This study analyzes the key factors of 3D spatial information in accordance with the establishment of aerial and ground equipment fusion, and the quality improvement solutions are delivered from the preference survey. Furthermore, it investigates the factors affecting the quality of the individual technical elements through the establishment of three-dimensional spatial information. It is for identifying the priority which needs to be improved, and this data will be used to identify the evaluation for factors, the technology development and its application. For this purpose, the presence or absence of equality is judged by the quantitative techniques through the preference survey of the gap between the experts of spatial information and survey and the general users who have experiences on 3D spatial information. 본 연구에서는 공중 및 지상장비에 따른 3차원 공간정보 구축의 핵심요인을 분석하고 선호도 조사를 통하여 품질 향상 방안을 도출하였다. 이는 3차원 공간정보 구축을 위한 개별 기술 요소에 대하여 품질에 영향을 미치는 요인을 조사하고, 개선이 요구되는 우선순위를 파악하여 이에 대한 요인 평가 및 대안기술 개발과 적용 등의 자료로 활용하기 위함이다. 이를 위해 3차원 공간정보를 바라보는 집단 간 견해차의 선호도 조사를 통하여 공간정보 및 측량에 종사하는 전문가 집단과 일반적으로 3차원 공간정보를 경험한 비전문가 집단을 대상으로 동일성 유무를 계량적 기법에 의해 판단하였다.