6660期

最新文章

• Rerouting railway would conserve India's gibbons AI翻译
  作者：Jha, Rohit Ravindra Samita; Veeraswami, Gopi Govindan; Chetry, Dilip; Kumar, Nandha
  作者单位：Wildlife Institute of India
• Structural insights into histone binding and nucleosome assembly by chromatin assembly factor-1 AI翻译
  作者：Liu, Chao-Pei; Yu, Zhenyu; Xiong, Jun; Hu, Jie; Song, Aoqun; Ding, Dongbo; Yu, Cong; Yang, Na; Wang, Mingzhu; Yu, Juan; Hou, Peini; Zeng, Kangning; Li, Zhenyu; Zhang, Zhuqiang; Zhang, Xinzheng; Li, Wei; Zhang, Zhiguo; Zhu, Bing; Li, Guohong; Xu, Rui-Ming
  作者单位：Chinese Academy of Sciences; Chinese Academy of Sciences; Institute of Biophysics, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Nankai University; Nankai University; Anhui University; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Columbia University; NewYork-Presbyterian Hospital; NewYork-Presbyterian Hospital; Columbia University; Chinese Academy of Sciences; Institute of Biophysics, CAS
  摘要：Chromatin inheritance entails de novo nucleosome assembly after DNA replication by chromatin assembly factor-1 (CAF-1). Yet direct knowledge about CAF-1's histone binding mode and nucleosome assembly process is lacking. In this work, we report the crystal structure of human CAF-1 in the absence of histones and the cryo-electron microscopy structure of CAF-1 in complex with histones H3 and H4. One histone H3-H4 heterodimer is bound by one CAF-1 complex mainly through the p60 subunit and the aci...
• ARTIFICIAL INTELLIGENCE Researchers propose test for AI sentience AI翻译
  作者：Finkel, Elizabeth
• Tandem propane dehydrogenation and surface oxidation catalysts for selective propylene synthesis AI翻译
  作者：Wang, Wei; Chen, Sai; Pei, Chunlei; Luo, Ran; Sun, Jiachen; Song, Hongbo; Sun, Guodong; Wang, Xianhui; Zhao, Zhi-Jian; Gong, Jinlong
  作者单位：Tianjin University; TJU-NUS Joint Institute; Collaborative Innovation Center of Chemical Science & Engineering Tianjin
  摘要：Direct propane dehydrogenation (PDH) to propylene is a desirable commercial reaction but is highly endothermic and severely limited by thermodynamic equilibrium. Routes that oxidatively remove hydrogen as water have safety and cost challenges. We coupled chemical looping-selective hydrogen (H-2) combustion and PDH with multifunctional ferric vanadate-vanadium oxide (FeVO4-VOx) redox catalysts. Well-dispersed VOx supported on aluminum oxide (Al2O3) provides dehydrogenation sites, and adjacent n...
• CLIMATE CHANGE As oceans warm, scientists forecast heat waves AI翻译
  作者：Cornwall, Warren
• The Remnants of Race Science AI翻译
  作者：Determann, Joerg Matthias
  作者单位：Qatar Foundation (QF); Virginia Commonwealth University School of the Arts in Qatar
• How bulked-up cells shape hearts and leaves AI翻译
  作者：Pennisi, Elizabeth
• Aminodealkenylation: Ozonolysis and copper catalysis convert C(sp3)-C(sp2) bonds to C(sp3)-N bonds AI翻译
  作者：He, Zhiqi; Moreno, Jose Antonio; Swain, Manisha; Wu, Jason; Kwon, Ohyun
  作者单位：University of California System; University of California Los Angeles
  摘要：Great efforts have been directed toward alkene p bond amination. In contrast, analogous functionalization of the adjacent C(sp(3))-C(sp(2)) s bonds is much rarer. Here we report how ozonolysis and copper catalysis under mild reaction conditions enable alkene C(sp(3))-C(sp(2)) s bond-rupturing cross-coupling reactions for the construction of new C(sp(3))-N bonds. We have used this unconventional transformation for late-stage modification of hormones, pharmaceutical reagents, peptides, and nucle...
• Norway's mining plans threaten Arctic life AI翻译
  作者：Sonne, Christian; Ciesielski, Tomasz M.; Jenssen, Bjorn M.; Lam, Su Shiung; Zhong, Huan; Dietz, Rune
  作者单位：Aarhus University; University of Petroleum & Energy Studies (UPES); Norwegian University of Science & Technology (NTNU); University Centre Svalbard (UNIS); Universiti Malaysia Terengganu; Nanjing University
• Forest carbon offsets are failing AI翻译
  作者：Jones, Julia P. G.; Lewis, Simon L.
  作者单位：Bangor University; Utrecht University; University of Leeds; University of London; University College London