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长生不老酶--------端粒酶的秘密
最近,研究发现端粒酶催化循环中的关键步骤。这种催化循环决定了人类端粒酶酶合成DNA的能力。
Chen, Y., J.D. Podlevsky, D. Logeswaran and J.J.-L. Chen. A single nucleotide incorporation step limits human telomerase repeat addition activity. EMBO, 2018 DOI: 10.15252/emboj.201797953
�https://www.sciencedaily.com/releases/2018/02/180227142114.htm
https://newatlas.com/telomere-enzyme-anti-aging/53597/
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人类精子尾部发现的新结构
为了让精子能够游泳,为了怀孕,需要一条高效的尾巴。通过冷冻电子断层扫描,研究人员在精子尾部发现了一个全新的纳米结构。�
Davide Zabeo, John M. Heumann, Cindi L. Schwartz, Azusa Suzuki-Shinjo, Garry Morgan, Per O. Widlund, Johanna L. Höög. A lumenal interrupted helix in human sperm tail microtubules. Scientific Reports, 2018; 8 (1) DOI: 10.1038/s41598-018-21165-8
https://www.sciencedaily.com/releases/2018/02/180220124544.htm
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