The 20th Central Committee of the Communist Party of China(CPC)convened its fourth plenary session in Beijing from October 20 to 23.Participants at the session deliberated over and adopted the Recommendations of the C...The 20th Central Committee of the Communist Party of China(CPC)convened its fourth plenary session in Beijing from October 20 to 23.Participants at the session deliberated over and adopted the Recommendations of the CPC Central Committee for Formulating the 15th Five-Year Plan for Economic and Social Development,according to a communique of the session released on October 23.The Political Bureau of the CPC Central Committee presided over the meeting.展开更多
As a major principle underlying the Communist Party of China's(CPC)governance in the new era and a core piece of its holistic approach to national security,ensuring both development and security emphasizes compreh...As a major principle underlying the Communist Party of China's(CPC)governance in the new era and a core piece of its holistic approach to national security,ensuring both development and security emphasizes comprehensive governance from a long-term perspective and influences the world with its global vision.It keeps pace with the times by prioritizing innovative areas and is of great theoretical and practical significance.On the new journey ahead,we must firmly ensure both development and security.More importantly,we must ensure both high-quality development and high-level security,safeguarding the former through the latter.This is an urgent requirement we face in today's world,which has entered a period of turbulence and transformation characterized by increasing complexity.Confronted with the formidable tasks of promoting reform and development while maintaining stability at home and the grave challenges brought about by international turbulence and changes,we must earnestly implement the guiding principles of the 20th CPC National Congress and the third plenary session of the 20th Party Central Committee.We should ensure secure and sustainable development,accelerate efforts to modernize China's national security system and capacity,foster high-level security,and improve the mechanisms for preserving national security in foreign-related affairs.In short,we should strive to achieve a positive interplay between high-quality development and high-level security,so as to effectively safeguard Chinese modernization.展开更多
Arthrospira platensis is an economically important cyanobacterium; and it has been used widely in food and pharmaceutical industries. The phycocyanin(PC) from A. platensis is extremely valuable in medicine and molecul...Arthrospira platensis is an economically important cyanobacterium; and it has been used widely in food and pharmaceutical industries. The phycocyanin(PC) from A. platensis is extremely valuable in medicine and molecular biology due to its antioxidation and anti-tumoring activity and applicability as fluorescence protein tag. In present study, two recombinant plasmids, one contained the phycocyanobilin(PCB)-producing genes(hox1 and pcyA) while the other contained the phycobiliprotein gene(cpcB) and the lyase gene(either cpcS/U or cpcT), were constructed and synchronically transferred into E. coli in order to test the the activities of relevant lyases for catalysing PCB addition to CpcB during synthesizing fluorescent PC holo-β-subunit(β-PC) of A. platensis. As was evidenced by the fluorescence emitted at a peak specific for PC, CpcB was successfully synthesized in E. coli, to which co-expressed PCBs attached though at a relatively low efficiency. The results showed that the attachment of PCBs to CpcB were carried out mainly by co-expressed CpcS/U but CpcB also showed some autocatalytic activity. Currently, no CpcT activity was detected in this E. coli expression system. Further studies will be conducted to improve the efficiency of fluorescent PC synthesis in E. coli.展开更多
文摘The 20th Central Committee of the Communist Party of China(CPC)convened its fourth plenary session in Beijing from October 20 to 23.Participants at the session deliberated over and adopted the Recommendations of the CPC Central Committee for Formulating the 15th Five-Year Plan for Economic and Social Development,according to a communique of the session released on October 23.The Political Bureau of the CPC Central Committee presided over the meeting.
文摘As a major principle underlying the Communist Party of China's(CPC)governance in the new era and a core piece of its holistic approach to national security,ensuring both development and security emphasizes comprehensive governance from a long-term perspective and influences the world with its global vision.It keeps pace with the times by prioritizing innovative areas and is of great theoretical and practical significance.On the new journey ahead,we must firmly ensure both development and security.More importantly,we must ensure both high-quality development and high-level security,safeguarding the former through the latter.This is an urgent requirement we face in today's world,which has entered a period of turbulence and transformation characterized by increasing complexity.Confronted with the formidable tasks of promoting reform and development while maintaining stability at home and the grave challenges brought about by international turbulence and changes,we must earnestly implement the guiding principles of the 20th CPC National Congress and the third plenary session of the 20th Party Central Committee.We should ensure secure and sustainable development,accelerate efforts to modernize China's national security system and capacity,foster high-level security,and improve the mechanisms for preserving national security in foreign-related affairs.In short,we should strive to achieve a positive interplay between high-quality development and high-level security,so as to effectively safeguard Chinese modernization.
基金supported by the National Science and Technology Major Project of China (2008ZX08001-004)
文摘Arthrospira platensis is an economically important cyanobacterium; and it has been used widely in food and pharmaceutical industries. The phycocyanin(PC) from A. platensis is extremely valuable in medicine and molecular biology due to its antioxidation and anti-tumoring activity and applicability as fluorescence protein tag. In present study, two recombinant plasmids, one contained the phycocyanobilin(PCB)-producing genes(hox1 and pcyA) while the other contained the phycobiliprotein gene(cpcB) and the lyase gene(either cpcS/U or cpcT), were constructed and synchronically transferred into E. coli in order to test the the activities of relevant lyases for catalysing PCB addition to CpcB during synthesizing fluorescent PC holo-β-subunit(β-PC) of A. platensis. As was evidenced by the fluorescence emitted at a peak specific for PC, CpcB was successfully synthesized in E. coli, to which co-expressed PCBs attached though at a relatively low efficiency. The results showed that the attachment of PCBs to CpcB were carried out mainly by co-expressed CpcS/U but CpcB also showed some autocatalytic activity. Currently, no CpcT activity was detected in this E. coli expression system. Further studies will be conducted to improve the efficiency of fluorescent PC synthesis in E. coli.
