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Gibberellic Acid 의 작용 기작에 관한 연구 - 2. Actinomycin D 처리시 GA3 에 의한 단백질의 생합성 및 인산화반응의 (燐酸化反應) 조절
심웅섭(Woong Seop Sim),박홍덕(Hong Duok Park),노광수(Kwang Soo Roh),문혜연(Hye Yeon Moon) 한국식물학회 1982 Journal of Plant Biology Vol.25 No.1
As a part of the studies on the regulatory mechanism of gene expression by gibberellic acid, the effects fo GA_3 on the protein biosynthesis and phosphorylation in maize seedlings were investigated in the presence of actinomycin D. The activites of protein biosynthesis and phosphorylation in germination seeds treated with GA_3 were greater than these of the control at the 3-day point after germination. It is assumed that the enhancement of protein biosynthesis by GA_3 in the presence of actinomycin D is due to the effects of GA_3 on the translational processes in which protein is produced from the mRNA synthesized previously.
Gibberellic Acid 의 작용기작에 (作用機作) 관한 연구 - 1. CA3 에 의한 단백질의 생합성 및 인산화반응의 조절
심웅섭(Woong Seop Sim),노광수(Kwang Soo Roh) 한국식물학회 1979 Journal of Plant Biology Vol.22 No.4
As a part of the studies on the regulatory mechanism of gene expression by GA_3, the effects of GA_3 on the protein biosynthesis and phosphorylation in maize seedlings were investigated. 1. The optimum concentration of GA_3 for the stimulation of the protein biosynthesis was 0.3mM. 2. The protein biosynthesis was remarkably increase by GA_3 during the germination. The reason for the decrease in the protein biosynthesis by 48hrs. after germination seems to be a staggered gene expression, and/or increases in protease and RNase activities. 3. The ratio of the amount of the newly synthesized protein in germination seeds treated with GA_3 to the amount of proteins secreted into the endosperm was similar to that ratio in control. According to this result, it seems that GA_3 stimulates only the expression of certain definite genes. 4. By the treatment with GA_3, the rates of biosynthesis and phosphorylation of proteins were increased up to about 1.5 times during germination and 6 times by 72hrs. after germination, respectively. The ratio of the total soluble proteins to the phosphoproteins considerably increased in teh early germination stage (24hrs.) but decreased after 24hrs. According to the above mentioned results, the stimulation of the phosphorylation of proteins by GA_3 seems to be attributed to the increases in the activities of protein kinases.
Ribosome 과 Elongation Factors EF - 1 과 EF - 2 의 활성에 미치는 cAMP의 효과
심웅섭,문혜연 생화학분자생물학회 1991 BMB Reports Vol.19 No.3
The effects of cAMP on the activities of the various components necessary for protein biosynthesis were investigated. 1. The rate of protein biosynthesis was increased about 27% by ribosomes treated with cAMP. 2. The activities of elongation factors EF-1 and EF-2 were considerably stimulated by exogenous cAMP.
Effects of Cyclic AMP on the Activities of Ribosome and Elongation Factors EF-1 and EF-2
심웅섭,문혜연,Sim, Woong-Seop,Moon, Hye-Yeon 생화학분자생물학회 1986 한국생화학회지 Vol.19 No.3
단백질의 생합성에 필요한 여러가지 components의 활성에 미치는 cAMP 의 효과를 조사하였다. cAMP로 처리된 ribosome의 활성은 대조구에 비하여 27% 증가하였으며 EF-1 과 EF-2의 활성은 cAMP에 의하며 각각 17%와 20% 증가 하였다. The effects of cAMP on the activities of the various components necessary for protein biosynthesis were investigated. 1. The rate of protein biosynthesis was increased about 27% by ribosomes treated with cAMP. 2. The activities of elongation factors EF-1 and EF-2 were considerably stimulated by exogenous cAMP.
강대웅(Dae Woong Kang),김영호(Youngho Kim),심정섭(Jeong Seop Sim) 한국정보과학회 2014 정보과학회논문지 : 시스템 및 이론 Vol.41 No.4
근사문자열매칭 문제는 컴퓨터보안, 검색엔진, 생물정보학과 같은 다양한 분야에서 연구되고 있다. 근사문자열매칭에서는 불일치 정도를 판단하기 위해, 편집거리나 확장편집거리와 같은 거리함수를 이용한다. 알파벳 ∑의 문자들로 구성된, 길이가 각각 m, n인 두 문자열 X, Y의 편집거리는 X를 Y로 변환하기 위해 필요한 최소 편집연산의 수로 정의된다. 이 때 편집연산은 삽입, 삭제, 교체연산으로 구성된다. X, Y의 확장편집거리는 X를 Y로 변환하기 위해 필요한 최소 확장편집연산의 수로 정의된다. 이때, 확장편집연산은 편집연산에 교환연산을 추가한 연산들로 구성된다. X, Y의 확장편집거리는 동적프로그래밍 기법을 이용하여 O(mn)시간과 공간을 이용하여 계산할 수 있다. 본 논문에서는 X, Y의 확장편집거리를 최대 m개의 쓰레드를 이용하여 O(m+n) 시간과 O(mn) 공간을 이용하여 계산하는 병렬알고리즘을 제시한다. 또한 확장편집거리를 계산하는 순차알고리즘과 병렬알고리즘을 각각 CPU와 GPU 기반으로 구현하여 두 알고리즘의 수행시간을 비교한다. 실험 결과 두 문자열의 길이가 각각 10,000일 때, 병렬알고리즘이 순차알고리즘에 비하여 약 16배 빠른 수행시간을 보였다. Approximate string matching problems have been studied in such diverse fields as computer security, search engines, and bioinformatics. To measure the amounts of errors between two strings, approximate string matching uses distance functions such as the edit distance and the extended edit distance. Given two strings X and Y (?X?=m, ?Y?=n)over an alphabet ∑, the edit distance between X and Y is the minimum number of edit operations to convert X into Y. Edit operations consist of insertions, deletions and changes. The extended edit distance between X and Y is the minimum number of extended edit operations to convert X into Y. Extended edit operations consist of insertions, deletions, changes, and swaps. The edit distance and the extended edit distance between X and Y can be computed using dynamic programming technique in O(mn) time and space. In this paper, we present a parallel algorithm of computing the extended edit distance between two strings. Our algorithm computes the extended edit distance between X and Y in O(m+n) time using m threads where m ≤ n. We implemented our parallel algorithm using CUDA. The experimental results show that our algorithm runs about 16 times faster than the sequential algorithm when m = n = 10,000.
면역증강성 다당 생산을 위한 참당귀 세포배양의 최적조건
안경섭,서원택,심웅섭,김익환 한국산업미생물학회 1998 한국미생물·생명공학회지 Vol.26 No.2
참당귀 세포(Angelica gigas H4)를 현탁배양하여 면역증강성 다당을 생산하기 위한 최적배지 설계 및 생산조건 최적화 연구를 수행하였다. 우선 세포의 성장에 가장 좋은 배지로서 Schenk and Hildebrandt(SH) 배지를 선택하여 배양한 결과 25℃, 암배양조건에서 각각 15.8 g DCW/ℓ와 0.85 g/ℓ의 세포 및 다당을 얻을 수 있었다. 한편 다당 생산용 배지의 개발을 위하여 여러 가지 식물세포배양용 배지중에서 다당생산능이 가장 높은 배지로서 Gamborg B5 배지를 선정하였으며 B5 배지를 변형하여 면역증강성 다당생산을 위한 최적배지(PPM)를 개발하였다. 그리고 최적배지를 이용한 당귀 세포증식과 다당 생산을 위한 최적 pH는 6.0-6.5, 배양온도는 20℃, 그리고 광조건보다는 암조건이 좋은 것으로 밝혀졌다. 상기 최적조건에서의 최대 세포증식과 다당생산을 각각 14.8 g/ℓ, 1.5 g/ℓ이었다. An Immunostimulating polysaccharide was produced from the suspension culture of Angelica gigas H4 plant cells. In order to enhance the polysaccharide production by the A. gigas cell culture, medium composition and physical conditions were optimized. Schenk and Hildebrandt (SH) medium was selected as an optimal basal medium for the growth of A. gigas. The maximum cell and polysaccharide concentration obtained in SH medium were 15.8 g DCW/ℓ and 0.85 g polysaccharide/ℓ, respectively, at 25℃ under dark condition. For the enhanced polysaccharide production, a polysaccharide production medium (PPM) was established by modifying Gamborg B5 medium with optimized carbon sources, growth regulators, organic and inorganic elements. Optimal initial pH and temperature were 6.0-6.6 and 20℃, respectively, and the dark condition was better than the light condition. The maximum polysaccharide concentration of 1.5 g/ℓ could be obtained through the optimization of the medium composition and physical conditions.
Detection of Anticancer Activity from the Root of Angelica gigas in Vitro
AHN, KYUNG SEOP,SIM, WOONG SEOP,KIM, IK HWAN 한국미생물 · 생명공학회 1995 Journal of microbiology and biotechnology Vol.5 No.2
Anticancer activity of a fraction of the ethanol extract from the root of Korean angelica (Angelica gigas Nakai) was recognized in human cancer cell lines HeLa S_3 K-562, and Hep G_2. The extract blocked the phorbol ester-inducing megakaryocytic differentiation of K-562 cells, which indicated the modification of protein kinase C (PKC) activity. In vitro assay showed the activation of PKC by the extract. An effective fraction of the Angelica gigas extract, of which R_f value was 0.64 in a thin layer chromatography, was a different component from those of European angelicas. The ED_50 value of the fraction was 8, 9, and 16 ㎍/㎖ against HeLa S_3 Hep G_2 and K-562 cells, respectively, while the fraction showed higher ED_50 values against normal cell lines.
발아 중인 옥수수에서 리보조옴 단백질의 인산화반응에 미치는 GA3 의 효과
안경섭(Kyung Seop Ahn),음진성(Jin Seong Eum),심웅섭(Woong Seop Sim) 한국식물학회 1990 Journal of Plant Biology Vol.33 No.1
In order to study the effect of GA_3 on the phosphorylation of ribosomal proteins during germination in Zea mays, ribosomal proteins were labelled with ^32P, extracted, electrophoresed and autoradiographed. There are five phosphorylated ribosomal proteins. One of these is in 40S subunit and has molecular weight of 33,000 daltons. Others are in 60S subunit and have molecular weights of 37,000, 16,000, 15,200 and 13,500, respectively. Phosphorylation of ribosomal proteins was increased maximum 47.7% in shoots of Zea mays treated with GA_3.