利用二维接力相关谱和J分解谱对里杜霉素质子信号的归属

本文采用二维接力相关技术(单接力和三接力COSY)和J分解谱对氨基糖苷类化合物里杜霉素的全部质子信号进行了归属,为进一步测定里杜霉素的构型和构象打下了基础.     

利用二维接力相关谱和J分解谱对里杜霉素质子信号的归属

本文采用二维接力相关技术(单接力和三接力COSY)和J分解谱对氨基糖苷类化合物里杜霉素的全部质子信号进行了归属,为进一步测定里杜霉素的构型和构象打下了基础.     

Screening chemical libraries for nucleic-acid-binding drugs by in vitro selection: A test case with lividomycin

Summary Screening new drugs is a costly and time-consuming process. Identifying new targets for existing therapeutics is often a particularly effective avenue for drug development. We have investigated whether in vitro selection can be used for target acquisition. Aminoglycoside antibiotics are known to bind to and inactivate functional natural nucleic acids, such as ribosomal RNA. As an example of how new targets for aminoglycosides could be identified, a lividomycin aptamer was iteratively isolated from a random sequence pool. The consensus sequence of this and other anti-aminoglycoside aptamers was used as the basis for a comprehensive search of natural sequence databases. Surprisingly, a high degree of similarity was found between aptamers and genomic sequences from a variety of organisms. While many of the similarities found are in regions of unknown or nonessential function, some of the sequences are found in critical genes in pathogenic organisms.