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SUN5;sperm;spermatozoa;motility;mice

SUN5 Anchors Sperm Head to the Tail[Oct 23, 2017]

Recently, using CRISP/Cas9 system, the Protein Modification and Gametogenesis group led by Dr. LI Wei from the Institute of Zoology of the Chinese Academy of Sciences constructed the SUN5 knockout mice, and they found that the male SUN5-null mice were infertile due to the malformed spermatozoa.

cordycepin;pontostatin;dual biosynthesis;cordyceps militaris;anticancer

Scientists Unveil a Novel Mechanism of Purine Metabolisms in Fungi[Oct 23, 2017]

Both the adenosine analogs cordycepin (3'-deoxyadenosine) and pentostatin (2'-deoxycoformycin) have anticancer activities. Prof. WANG Chengshu's group at the Shanghai Institute of Plant and Physiology and Ecology of Chinese Academy of Sciences unveiled the dual biosynthetic mechanism of cordycepin and pentostatin in C. militaris by following a protector-protégé strategy.

Alseodaphne;Alseodaphnopsis;Lauraceae;species;genus

A New Genus of Lauraceae Discovered[Oct 20, 2017]

Researchers from Xishuangbanna Tropical Botanical Garden of Chinese Academy of Sciences conducted an exploratory trip to Yunnan, China, and collected a questionable plant possibly belonging to Alseodaphne. Using DNA sequence data in addition to morphological data, researchers assessed the phylogenetic relationships of the genus Alseodaphne distributed in southwest China. Based on both morphological and molecular evidence, they proposed a new genus Alseodaphnopsis, separated from the traditional genus Alseodaphne, to accommodate the independent Alseodaphne clade II including most of the species distributed in the northern margin of tropics in southwest China (including the new species, Alseodaphnopsis ximengensis).

semiconducting quantum transistor;semiconductor quantum;quantum dot;molybdenum disulfide

Semiconducting Quantum Transistors: New Adventure in 2D Materials Research[Oct 20, 2017]

Professor GUO Guoping's group at University of Science and Technology of China of Chinese Academy of Sciences, collaborating with researchers from Japanese research institutes, achieved great progress in semiconductor quantum dot by discovering the possible applications of transition metal dichalcogenides. They experimentally demonstrated a fully electrotunable double quantum dot device based on semiconducting flexible 2D materials for the first time.

nitro reduction;nitrogen doping;noble metal free;nanosheet

Researchers Develop Noble Metal Free Catalyst for Efficient Nitro Reduction[Oct 20, 2017]

Prof. YI Zhiguo's group at Fujian Institute of Research on the Structure of Matter of Chinese Academy of Sciences has developed an efficient, stable and cost-effective catalyst based on earth-abundant TiO2 and carbon to catalyze the selective reduction of nitro compounds.

chalcopyrite;IR NLO

Scientists Synthesize Four New Chalcopyrite-like Infrared Nonlinear Optical Materials[Oct 19, 2017]

Considering the performance features of chalcopyrites, the research group led by Prof. PAN Shilie at Xinjiang Technical Institute of Physics & Chemistry of Chinese Academy of Sciences designed and synthesized four new IR NLO materials Li2BaMIVQ4 (MIV = Ge, Sn; Q = S, Se) system with the classical AgGaQ2 as the templates. MIVQ4 tetrahedra as the critical "NLO active units" are used to substitute the GaQ4 units to maintain the good dij of AgGaQ2, and substitution of highly electropositive elements (alkali/alkaline-earth metal)?for the Ag atoms can also increase Eg.

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