Covalent bond formation between a DNA-cytosine methyltransferase and DNA containing 5-azacytosine. DNA containing 5-azacytosine (azaC) has previously been shown to be a potent inhibitor of DNA-cytosine methyltransferases. In this report, we describe experiments which demonstrate that azaC-DNA forms a...
Elena ShekaNadezhda PopovaSheka EF, Popova NA (2011) When a covalent bond is broken? arXiv:1111.1530v1 [physics.chem-ph]Sheka EF, Popova NA : When a covalent bond is broken? arXiv:1111.1530v1 [physics.chem-ph]. 2011.
A single covalent bond between two atoms generally allows the rotation of one part of a molecule relative to the other around the bond axis. A double bond prevents such rotation, producing a more rigid and less flexible arrangement of atoms. 相关知识点: 试题来源: 解析 正确 反馈 收藏 ...
电子 ___ 二、单词短语英译中(每小题 1 分,共 15 分) (1) carbonate ___ (2) monoxide___ (3) amino acid ___ (4) aromatic___ (5) protein ___ (6) covalent bond___ (7) raw material___ (8) chemical shift ___ (9) solute ___ (10) oxygen ___ (11) monatomic ___ (1...
4f). The C–N bond-formed benzoxazole moiety is shifted approximately 3.0 Å and rotated ~51.5° from the non-covalent 3-HAA substrate. The polyketide chain moieties are subtly moved within the range of 0.6 to 2.2 Å between the SNAC-N1, amidation, and hydrolysis products. The ...
A nonpolar covalent bond (i.e., pure covalent) would form in which one of the following pairs of atoms? A. {eq}\rm Na-Cl {/eq}. B. {eq}\rm H-Cl {/eq}. C. {eq}\rm Li-Br {/eq}. D. {eq}\rm Se-B...
下下载载后后可可ctrl+F搜搜索索题题目目,如如有有问问题题可可以以联联系系作作者者 Chapter 1 Materials and Devices: An Introduction 第第一一章章测测验验 1 单选 The basic unit of materials is___ , which can bond directly together to form materials, or convert into ions, or assemble int...
aHis story was picked out as the best by the judges 他的故事被挑选了作为最佳由法官[translate] abetween the phenolic oxygen of pCA and the carboxylate oxygen[translate] aa LBHB.[translate] aforms a covalent bond to the phenolic oxygen of Tyr42. Thus, the[translate]...
3 An acidic solution forms when chlorine is added to water. 36 Nitrogen gas is unreactive, whereas oxygen gas and chlorine gas are reactive. Which statements help to explain this difference? 1 The two N atoms in an N2 molecule are held together by a very strong triple bond. 2 The ...
The definition of a covalent bond is a chemical link between two atoms or ions in which the electron pairs are shared.