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See-Won Byun 경남대학교 극동문제연구소 2016 ASIAN PERSPECTIVE Vol.40 No.3
Xi Jinping took office in 2013 with a vision for a “new type of major-power relations” between China and the United States. What does this concept mean and why is it important now? An examination of the current Chinese discourse on major-power relations, as reflected in official and scholarly writings, reveals more continuity than change in China’s external orientation. China’s major-powers model reinforces (1) peaceful intentions rather than hegemonic aspirations, (2) the primacy of advancing China’s domestic development rather than its international position, and (3) tensions between China’s dual identities as a rising power and developing economy. The most distinct feature of this model is that it remains a Chinese proposition, posing a question as to the extent to which the United States and China are aligned in perceptions of their future relationship and the international order more broadly.
See-Hyoung Park,Mi-Ae Kang,Hyeong-Soo Shim,조형진,Jonghwa Won,이건형 대한화학회 2006 Bulletin of the Korean Chemical Society Vol.27 No.9
We investigated in vitro T-cell inhibitory activity and bioavailability of small chemical inhibitors for Lck SH2 domain, which had a different scaffold such as an amide bond, reduced amide bond, N-methyl amide bond, thioamide bond, and urethane bond. Each of these compounds, with its particular scaffold, showed a different logP value, stability against serum enzyme, stability in buffer solution, and in vitro T-cell inhibitory activity. Overall results indicated that the SH2 inhibitor containing urethane bond can be a new lead compound because of its superior bioavailability, potent in vitro T-cell inhibitory activity, and facile synthesis.
Usefulness of self cleavage tag mini-intein in Baculovirus Expression Vector System
Won Seok Gwak,See Nae Lee,Ji Hoon Lee,Soo Dong Woo 한국응용곤충학회 2016 한국응용곤충학회 학술대회논문집 Vol.2016 No.10
Recombinant proteins including a polypeptide fusion partner, termed affinity tag, to facilitate the purification of the target polypeptides are widely used. However, the affinity tag must be removed from the target after the purification process. Recently, the Synechocystis sp. PCC6803 DnaB mini-intein (Ssp DnaB mini-intein) is widely used in Escherichia coli expression systems as the solution of this problem. The Ssp DnaB mini-intein can be induced simply by shifting of pH and temperature, offering a benefit to cleave a peptide bond without using a protease or chemical reagent. Although the utility of this novel tag is widely studied in E. coli, there is no report yet in baculovirus expression vector system (BEVS). In this study, we generated several recombinant baculoviruses to express foreign proteins with Ssp DnaB mini-intein. In conclusion Ssp DnaB mini-intein was good tag also in BEVS with more advantages.
Baculovirus ORF1629 is not essential for the viral replication
See Nae Lee,Won Seok Gwak,Ji Hoon Lee,Soo Dong Woo 한국응용곤충학회 2016 한국응용곤충학회 학술대회논문집 Vol.2016 No.10
Recombinant baculovirus genome that absence part of ORF1629 has used to enhance efficiency of recombinant virus selection because a role of ORF1629 is believed to essential for viral replication in insect cells. It can be recovered by recombination with a transfer vector containing a complete ORF1629. Some recombinant bacmids were generated for this purpose. Recombinant bacmid GOZA, one of them, has a mini-F replicon for Escherichia coli and the partial ORF1629 gene. By accident, we could observe the replication of ApGOZA singly in Sf9 cells. Produced virus from ApGOZA was investigated for the existence of truncated ORF1629 not intact ORF1629 by PCR amplification and genomic sequencing. Also, we could observe the replication of AcGOZA alone in Sf9 cells. To analyze the influence of truncated ORF1629, the viral growth, BV production and polyhedral formation were conducted comparing to wild type virus and recombinat virus containing intact ORF1629. The results suggested the probability that ORF1629 is not essential for replication.