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Ser203在大鼠脑驱动蛋白水解ATP中重要作用的晶体学分析
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作者 万群 孟浩 +1 位作者 卜平 曹淑芬 《中国生物化学与分子生物学报》 CAS CSCD 北大核心 2015年第1期96-102,共7页
大鼠脑驱动蛋白(rat brain kinesin)是一种利用水解ATP所释放的能量,在微管束上高速且连续性运动的常规驱动蛋白.它在神经突触的物质运输中起着重要作用.研究大鼠脑驱动蛋白是如何将ATP中储藏的化学能转化为机械动能,是理解其运动机能... 大鼠脑驱动蛋白(rat brain kinesin)是一种利用水解ATP所释放的能量,在微管束上高速且连续性运动的常规驱动蛋白.它在神经突触的物质运输中起着重要作用.研究大鼠脑驱动蛋白是如何将ATP中储藏的化学能转化为机械动能,是理解其运动机能的重要课题.本课题获得了大鼠脑驱动蛋白单体与ATP结构类似物AMPPCP形成的复合物晶体结构.将这个晶体结构与大鼠脑驱动蛋白单体-另一种ATP结构类似物AMPPNP形成的复合物晶体结构以及大鼠脑驱动蛋白单体-ATP水解产物ADP形成的复合物晶体结构进行相互比较,揭示了其活性中心的开关区域I中丝氨酸203可能作为质子的供体,加速了ATP中γ-磷酸和β-磷酸的断裂,从而导致ATP的水解. 展开更多
关键词 大鼠脑驱动蛋白 ATP水解 ATP结构类似物 开关区域i
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Discovery and characterization of novel paramyxoviruses from bat samples in China 被引量:1
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作者 Haoxiang Su Yuyang Wang +3 位作者 Yelin Han Qi Jin Fan Yang Zhiqiang Wu 《Virologica Sinica》 SCIE CAS CSCD 2023年第2期198-207,共10页
Many paramyxoviruses are responsible for a variety of mild to severe human and animal diseases.Based on the novel discoveries over the past several decades,the family Paramyxoviridae infecting various hosts across the... Many paramyxoviruses are responsible for a variety of mild to severe human and animal diseases.Based on the novel discoveries over the past several decades,the family Paramyxoviridae infecting various hosts across the world includes 4 subfamilies,17 classified genera and 78 species now.However,no systematic surveys of bat paramyxoviruses are available from the Chinese mainland.In this study,13,064 samples from 54 bat species were collected and a comprehensive paramyxovirus survey was conducted.We obtained 94 new genome sequences distributed across paramyxoviruses from 22 bat species in seven provinces.Bayesian phylodynamic and phylogenetic analyses showed that there were four different lineages in the Jeilongvirus genus.Based on available data,results of host and region switches showed that the bat colony was partial to interior,whereas the rodent colony was exported,and the felines and hedgehogs were most likely the intermediate hosts from Scotophilus spp.rather than rodents.Based on the evolutionary trend,genus Jeilongvirus may have originated from Mus spp.in Australia,then transmitted to bats and rodents in Africa,Asia and Europe,and finally to bats and rodents in America. 展开更多
关键词 PARAMYXOViRUS Jeilongvirus BAT Host and region switches China
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