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Insect-specific microRNA involved in the development of the silkworm Bombyx mori
Yong Zhang,Xue Zhou,Xie Ge,Jiang-Hao Jiang,Mu-Wang Li,Shi-Hai Jia,Xiao-Nan Yang,Yun-Chao Kan,Xue-Xia Miao,Guo-Ping Zhao,Fei Li,Yong-Ping Huang 한국응용곤충학회 2009 한국응용곤충학회 학술대회논문집 Vol.2009 No.10
MicroRNAs (miRNAs) are endogenous non-coding genes that participate in post-transcription regulation by either degrading mRNA or blocking its translation. It is considered to be very important in regulating insect development and metamorphosis. Insects are the largest group of animals and are extremely valuable in biological and agriculture research. Insects are also important pests to human health and agriculture, and efforts are necessary protect both humans and plants from disease and damage. Despite their importance, insects lag behind mammals, nematodes, and plants in miRNA research. At present, only 279 insect miRNAs have been identified from Drosophila melanogaster, Anopheles gambiae, Apis mellifera, Bombyx mori, and D. pseudoobscura in miRBase, and most of these miRNAs were computationally predicted without experimental validation. Functional analysis of insect miRNAs has only been conducted in D. melanogaster.
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Kan-Yong Li,Wen-Chao Gong,Beak-Ryul Choi 한국무역학회 2021 Journal of Korea trade Vol.25 No.2
Purpose – This paper intends to conduct theoretical analysis and empirical test on the action mechanism of South Korea-China trade and South Korea’s FDI to China on green total factor productivity, so as to provide a new perspective and ideas for the improvement of China’s green total factor productivity and promote the high-quality development of China’s economy Design/methodology – This paper uses the data of 30 provinces, autonomous regions and munici-palities in China from 2004 to 2017 as the research sample, adopts the GML index method of SBM Directional Distance Function to measure GTFP, and analyzes the influence of South Korea-China trade and FDI from South Korea on China’s GTFP. Findings – Trade is conducive to promoting technological progress, which has a significant promotion effect on China’s green total factor productivity. While FDI has a significant inhibitory effect on China’s green total factor productivity, which verifies the “pollution haven” hypothesis. In addition, such influence has certain regional overall heterogeneity. Trade has a more significant promoting effect on GTFP in eastern coastal areas, while FDI has a more significant inhibitory effect on GTFP in central and western inland areas. The interaction between trade and FDI is conducive to the improvement of green total factor productivity, indicating that the benign mechanism of trade and FDI has been formed. Urbanization, industrial structure, human resource level and investment in science and technology are all conducive to the improvement of GTFP. Originality/value – Through theoretical analysis and empirical test on the action mechanism of South Korea-China trade and South Korea’s FDI on green total factor productivity, this paper provides a solid theoretical foundation for the further development of China-South Korea economic and trade cooperation in the future.
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Xiyu Li,Yong Li,Xianzhi Huang,Jiong Zheng,Fusheng Zhang,Jianquan Kan 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.4
The angiotensin I-converting enzyme inhibitorypeptide (ACEIP) was isolated and characterized fromsilkworm pupae and purified using Sephadex G-25 gelfiltration. The structure and physicochemical properties ofpupa ACEIP were analyzed. The α-P3 fraction exhibitedthe most potent ACE inhibitory activity. After purificationvia semi-preparative reverse-phase HPLC (RP-HPLC) andHPLC, the α-P3-6-b component was revealed to have thehighest ACE inhibitory activity (IC50=28.3 μg/mL). Edmandegradation revealed a Val-Glu-Ile-Ser amino acid sequencein which novel active sequences were identified. Physicochemicalproperty testing showed that purified pupaACEIP exhibits good solubility, heat resistance, and acidresistance that all indicate ACEIP derived from silkwormpupa is an excellent food-derived ACEIP.
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