Yingyong Wang

Abstract Size evolution among gigantic genomes involves gain and loss of many gigabases of transposable elements (TEs), sequences that parasitize host genomes. Vertebrates suppress TEs using piRNA and KRAB-ZFP pathways. TEs and hosts coevolve in an arms race, where suppression strength reflects TE fitness costs. In enormous genomes, additional TE costs become miniscule. How, then, do TEs and host suppression invoke further addition of massive DNA amounts?

Regulation of the oxygen vacancies of WOx for highly efficient catalytic epoxidation of cyclooctene The oxygen vacancy over the WOx catalyst play a critical role in the epoxidation of cyclooctene. Herein, WOx with tunable oxygen vacancies was prepared by simple reduction and regeneration of inactivated WO2.72, which showed high catalytic activity for epoxidation of cyclooctene.

Sonogashira reaction is an important reaction for forming carbon-carbon bond in organic synthesis, which is typically carried out under harsh reaction conditions. We herein report that PdCu alloy nanoparticles supported on SiC can efficiently catalyze the Sonogashira reaction by visible light irradiation under ligand-free and mild condition. The addition of Cu enhanced the activity of PdCu alloy nanoparticles.