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시금치에서 분리한 엽록체의 인산 (燐酸) 대사에 관한 연구
이종삼(Chong Sam Lee),이영녹(Young Nok Lee) 한국식물학회 1976 Journal of Plant Biology Vol.19 No.3
In order to observe the phosphate metabolism in chloroplast, the contents of inorganic phosphate and various compounds in chloroplast from spinach leaf tissues were investigated during the reaction in the light and dark in the reaction mixture and the turnover of phosphate in chloroplast was compared with that of whole cell system: 1. The phosphorus of DNA in chloroplast appears to be transferred from inorganic phosphate, while in whole cell system from phosphate pool. 2. ^32P-phosphate content of acid soluble fraction in chloroplast as well as in whole cell system was more increased in the light than dark during the reaction. It was noted to be caused by the stimulation of sugar phosphate synthesis in the light. 3. It was confirmed that polyphosphate exists in chloroplast as well as whole cell. Acid insoluble polyphosphate content in whole cell system was significantly decreased during the reaction and the similar tendency was also observed in chloroplast. It is, therefore, considered that acid insoluble polyphosphate also play an most important role as a phosphate pool respectively in chloroplast and in cytoplasm. 4. Protein and lipid phosphorus in chloroplast as well as whole cell system were transferred from acid insoluble polyphosphate.
대장균에 있어서 영양물 흡수에 미치는 Palmitoylcarnitine과 인삼 Saponin의 영향
김순옥,이호용,이종삼,최영길,조기승,Kim, Soon-Ok,Lee, Ho-Yong,Lee, Chong-Sam,Choi, Yong-Keel,Cho, Key-Seung 한국미생물학회 1984 미생물학회지 Vol.22 No.3
When enterobacterium, Escherichia coli B was cultivated with normal media in the presence of $0.2{\sim}0.6%$ Palmitoylcarnitine and $0.05{\sim}0.2%$ Ginseng Saponin, maximum population growth of the bacteria was presented 71% and 31%, respectively. Such a result, in vitro test, was concluded from the result that both detergents stimulated $C^{14}$-glucose, $C^{14}$-alanine and $C^{14}$-phosphatidylethanolamine uptake into the membrane of cells. The pre-treatment of cells with different amounts of Palmitoylcarnitine from $0.005{\sim}0.05{\mu}$ moles represented a significant increase of uptake, 33% of $C^{14}$-glucose, 129% of $C^{14}$-alanine and 158% of phosphatidylethanolamine at the concentration of $0.05{\mu}$ moles of Palmitoylcarnitine. On the other hand, the result of $C^{-2}%$ Saponin treatment showed the maximum value of uptake, 17% of $C^{14}$-glucose and 112% of $C^{14}$-alanine. In case of $C^{14}$-phosphatidylethanolamine, the maximum uptake showed 25% of increase at the concentration of $C^{14}$% Saponin.
Chlorella ellipsoidea 엽록체의 인지질 생합성 및 지방산 조성에 미치는 항생제의 효과
조수열(Soo Yeul Cho),이종삼(Chong Sam Lee) 한국식물학회 1992 Journal of Plant Biology Vol.35 No.1
The effects of amphotericin B (150 ㎍/㎖) and cycloheximide (10 ㎍/㎖) on the biosynthesis of phospholipid and the composition of fatty acids in chloroplasts isolated from Chlorella were analyzed. The contents of the total lipid and phospholipid (PC, PE, PI) in treatment with antibiotics were lower compared with the control. In the whole cell system, the major fatty acids utilized for biosynthesis of phospholipid were palmitic acid (31.96%) and linoleic acid (16.96%) in control while those were palmitic acid (36.15%) and linolenic acid (16.71%) in treatment with amphotericin B. And in treatment with cycloheximide, palmitic acid (31.90%) and stearic acid (15.32%) were used in phospholipid formation. The major fatty acids in chloroplasts were analyzed as to be palmitic acid and linolentic acid in control (33.75%, 18.90%) and in treatment with amphotericin B (36.75%, 9.46%). However, it was shown that the major fatty acids in chloroplasts treated with cycloheximide were palmitic acid (28.01%) and oleic acid (19.27%).
Chlorella ellipsoidea 엽록체의 인지질 생합성 및 지방산 조성에 미치는 탄소원의 효과
곽효선(Hyo Shun Kark),이종삼(Chong Sam Lee) 한국식물학회 1990 Journal of Plant Biology Vol.33 No.1
Cholrella cells were cultured with M_4N media treated with glucose (5 mM) sucrose (10 mM) and raffinose (30 mM). Phospholipids and their fatty acid compositions were analyzed in the chloroplast isolated from cultured Chlorella cells. Growth rate was prominently raised in the treatment with raffinose. Glucose was the most excellent carbon source in the biosynthesis of total lipid, phosphatidylcholine(PC), phosphatidylethanolamine(PE), phosphatidylinositol(PI) of the chloroplast. Also, the major fatty acids were palmitic, linoleic and linolenic acid during the biosynthesis of phospholipid in the control and in the treatment with carbon sources.
Chlorella 세포의 핵산 인단백질의 생합성에 미치는 마그네슘의 결핍 (缺乏)효과
이영녹(Yung Nok Lee),이종삼(Chong Sam Lee) 한국식물학회 1968 Journal of Plant Biology Vol.11 No.1
Chlorella ellipsoidea were grown in a Mg-free medium. Aliquots of the algal cell were taken out at the beginning and predetermined time intervals during the culture and were analyzed the contents of phosphate in various fractions of the cell constituents. The results obtained were compared with those of the control. When Chlorella cells were grown in a Mg-free medium, the contents of phosphate in the DNA protein, RNA-polyphosphate complex, nucleotidic-labileP, and PCA-soluble, fractions decreased compared with those of the control, while the content of acid insoluble polyphosphate increased signiscantly. On the otherhand, RNA-P and lipid-P showed the tendency of decrease at the early stage of the culture, but they were increased more than those in the control as culutre proceeds. It is showed that phosphate turnover from acid-insoluble polyphosphate into DNA, protein, and RNA-polyphosphate compiex was inhibited by magnesium-deficiency of the cells.