| 1 | Intraspecific phylogeography of Carchesium polypinum (Peritrichia, Ciliophora) from China, inferred from 18S-ITS1-5.8S ribosomal DNA显示文摘Based on the variation of site 34, 46, 241, 305 and 322 in the 18S-ITS1 rDNA sequence, 19 Carchesium polypinum populations collected from eight provinces of China were separated into northern and southern population along the delineation between the Yangtze River and the Pearl River. This geographic distribution pattern of Carchesium polypinum maybe results from two factors: the vicariance resulting from the formation of the delineation between the Pearl River and the Yangtze River accompanied with the uplift of Qinghai-Xizang Plateau, and the different dispersal paths of C. polypinum affected by the climate. | MIAO Wei, YU Yuhe, SHEN Yunfen & ZHANG XiyuanDonghu Experimental Station of Lake Ecosystems, Chinese Academy of Sciences, Wuhan 430072, China Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China College of Life Sciences, Wuhan University, Wuhan 430072, China | 2004 | Science China(Life Sciences)2004，47，1： | 2 |
| 2 | Hierarchical metal-peptide assemblies with chirality-encoded spiral architecture and catalytic activity显示文摘We report the coordination assembly of the ferrocene-diphenylalanine(Fc-FF)with divalent copper ions(Cu^(2+))into metalpeptide assemblies(MPAs)with hierarchical spiral architectures.The MPA particles are composed of helically organized nanofibers which can be correlated to the logarithmic spirals.The MPAs are hierarchically porous with abundant Fc and Cu2+active sites and show much higher catalytic activity than natural laccase toward the decolorization reaction.Moreover,a series of hierarchical structures of the MPAs can be synthesized by controlling the temperature and enantiomeric excess(ee).The peptide enantiomers with higher ee values will self-assemble into highly complex and ordered structures,which show higher surface area and porosity and thus enhanced catalytic activity compared with those assembled by peptides with lower ee values.The results provide new insights into the vital role of chirality in directing the self-assembly of biomolecules into highly ordered complex functional structures. | Jiayu Liu Jiaxing Zhang Liwei Zhang Yuefei Wang Hao Wei Yuhe Shen Jiwei Min Xi Rong Wei Qi Rongxin Su Zhimin He | 2023 | Science China Chemistry2023，66，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员