百度试题 结果1 题目The chemical structure of DNA is a double ___ helix.相关知识点: 试题来源: 解析 helix 反馈 收藏
its structure was revealed using X-rays. And DNA turns out to be a stunningly elegant molecule. What you’re looking at is the original DNA model currently on display in the Science Museum in London. It shows two long chains of mol...
Is DNA really a double helix?: The merits of the side-by-side modeldoi:10.1016/S0968-0004(80)80807-3G.A. RodleyR.H.T. BatesElsevier LtdTrends in Biochemical SciencesRodley,G. A. and Bates,R. H. T.The merits of the side-by-side model.Trends in Biochemical Sciences. 1980...
The complementarity of the two strands in the DNA double helix provides a mechanism for the storage and processing of genetic information. Now, an alternative ‘strand commutation’ mechanism of data processing with DNA/RNA has been revealed based on the reversible low-affinity interactions of essent...
the chemistry of biological molecules over the course of his career. Levene is credited with many firsts. For instance, he was the first to discover the order of the three major components of a singlenucleotide(phosphate-sugar-base); the first to discover the carbohydrate component ofRNA(...
The HT methodology uses a sliding-window approach to mine DNA structural information obtained from Monte Carlo simulations. It requires only nucleotide sequence as input and instantly predicts multiple structural features of DNA (minor groove width, roll, propeller twist and helix twist). The results...
The nitroxide ring is couple to the base motion through a tether linkage. The labeled bas is couple to another base which together experience base pair motion. This base pair is couple to the collective bending and twisting of all base pairs in the helix. Collective motions are also coupled ...
The helix axis of DNA in vivo is usually curved, rather than linear. This is a necessary condition, as the stretched length of the human genome is about 1 meter and this length needs to be "packaged" in order to fit in the nucleus of a cell. In eukaryotes, nature solved this problem...
DNA in cells is supercoiled and constrained into loops and this supercoiling and looping influence every aspect of DNA activity. We show here that negative supercoiling transmits mechanical stress along the DNA backbone to disrupt base pairing at specifi
The DNA double helix is inherently a nanoscale object, possessing a 2 nm diameter and a 3.4 nm helical repeat (10.5 base pairs). Considering this miniature length-scale, together with DNA's remarkable capability for programmable molecular recognition and the large vocabulary of available sequences,...