The body cavity of chicken under anesthesia was opened, and then the state of breathing and activities of air sac wal were observed. The results showed that, although the body cavity was opened, the chicken could stil...The body cavity of chicken under anesthesia was opened, and then the state of breathing and activities of air sac wal were observed. The results showed that, although the body cavity was opened, the chicken could stil breathe. When the chicken breathed in, the chest sidewal , thoracico-abdominal diaphragm and lung diaphragm al initiatively became larger, inflating the prethoracic and metathoracic air sacs; the cervical, clavicular and abdominal air sac wal s al contracted, shrinking the air sacs. When the chicken breathed out, the chest sidewal , thoracico-ab-dominal diaphragm and lung diaphragm initiatively contracted, shrinking the pretho-racic and metathoracic air sacs; the cervical, clavicular and abdominal air sac wal s al expanded, expanding the air sacs. Therefore, the chicken could stil breathe after the body cavity was opened. When the chicken breathed in, the prethoracic and metathoracic air sacs were al expanded, and the air flowed from the cervical, clav-icular and abdominal air sacs and respiratory tract to the prethoracic and metatho-racic air sacs through the lung, shrinking the cervical, clavicular and abdominal air sacs; when the chicken breathed out, the prethoracic and metathoracic air sacs wal s al contracted, and the air was extruded from the prethoracic and metathoracic air sacs into the cervical, clavicular and abdominal air sacs and respiratory tract trough the lung, expanding the cervical, clavicular and abdominal air sacs. During the entire breathing process, the prethoracic and metathoracic air sacs al can ex-pand and shrink initiatively, making the air flow though the lung.展开更多
Deg1,a thylakoid lumen-localized protease,retains both chaperone and protease activities.The in vivo function of Deg1 has been shown to be involved not only in PSII assembly but also in the degradation of PSII reactio...Deg1,a thylakoid lumen-localized protease,retains both chaperone and protease activities.The in vivo function of Deg1 has been shown to be involved not only in PSII assembly but also in the degradation of PSII reaction center protein D1.Here we used the transgenic plants with reduced Deg1 to examine whether the lumen-localized proteins are also the substrates of Deg1 in vivo.Our results showed that the transgenic plants accumulated degradation products of the PsbO protein while the levels of full-length PsbO were not affected.The PsbO degradation products could be efficiently degraded by the recombinant Deg1.These results suggest that Deg1 is involved in the degradation of the PsbO degradation fragments,but not in the initial cleavage event itself.展开更多
基金Supported by the Project Funded by Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)Natural Science Foundation of Yangzhou University(NK0313103)~~
文摘The body cavity of chicken under anesthesia was opened, and then the state of breathing and activities of air sac wal were observed. The results showed that, although the body cavity was opened, the chicken could stil breathe. When the chicken breathed in, the chest sidewal , thoracico-abdominal diaphragm and lung diaphragm al initiatively became larger, inflating the prethoracic and metathoracic air sacs; the cervical, clavicular and abdominal air sac wal s al contracted, shrinking the air sacs. When the chicken breathed out, the chest sidewal , thoracico-ab-dominal diaphragm and lung diaphragm initiatively contracted, shrinking the pretho-racic and metathoracic air sacs; the cervical, clavicular and abdominal air sac wal s al expanded, expanding the air sacs. Therefore, the chicken could stil breathe after the body cavity was opened. When the chicken breathed in, the prethoracic and metathoracic air sacs were al expanded, and the air flowed from the cervical, clav-icular and abdominal air sacs and respiratory tract to the prethoracic and metatho-racic air sacs through the lung, shrinking the cervical, clavicular and abdominal air sacs; when the chicken breathed out, the prethoracic and metathoracic air sacs wal s al contracted, and the air was extruded from the prethoracic and metathoracic air sacs into the cervical, clavicular and abdominal air sacs and respiratory tract trough the lung, expanding the cervical, clavicular and abdominal air sacs. During the entire breathing process, the prethoracic and metathoracic air sacs al can ex-pand and shrink initiatively, making the air flow though the lung.
基金supported by the State Key Basic Research Program of China(2006CB910300)the National Natural Science Foundation of China(30725003)
文摘Deg1,a thylakoid lumen-localized protease,retains both chaperone and protease activities.The in vivo function of Deg1 has been shown to be involved not only in PSII assembly but also in the degradation of PSII reaction center protein D1.Here we used the transgenic plants with reduced Deg1 to examine whether the lumen-localized proteins are also the substrates of Deg1 in vivo.Our results showed that the transgenic plants accumulated degradation products of the PsbO protein while the levels of full-length PsbO were not affected.The PsbO degradation products could be efficiently degraded by the recombinant Deg1.These results suggest that Deg1 is involved in the degradation of the PsbO degradation fragments,but not in the initial cleavage event itself.
