Many intracellular proteins are required to interact or bind to other macromolecules within a bind DNA. Such proteins often have conserved structural features, called motifs, whis at can cell in order to function properly. One class of such proteins is comprised of proteins tha interact with DNA. One such motif consists of two closely aligned a-helices(shown as cylinders below)that each have leucine-rich regions. This motif is referred to as a leucine

人教版高中生物必修2第3章第3节 DNA的复制习题

9.1DNA作为主要遗传物质的证据 9.2DNA的结构、复制及其损伤修复 9.3基因的概念与发展 9.4遗传信息的表达与调控 9.5核酸研究技术简介 9.6人类基因组计划简介 9.7遗传工程及其应用

(一)基因工程的概念 1.遗传工程广义;细胞工程-体细胞、原生质体的培养与杂交细器---细胞核的移植:回交,克隆羊染色体----条染色体或染色体片断的切割或转移基因工程狭义:基因工程:体外不经过有性繁殖,有目的地使DNA发生重组的技术体系。故又称重组DNA技术

once oncu n a paiuicuia positon on DNA, a nucleosome remained fixed in place because of the tight association 30-nm 98A5 sequence-specific DNA-binding proteins nucleosome

A重组DNA技术的理论基础 B基因的分子生物学 C基因工程的基本原理 D基因工程的支撑技术

ADNA的体外重组(切、接) B重组DNA分子的转化和扩增(转、增) C转化子的筛选和鉴定(检)

1.复制的特征 2.DNA复制的酶学 3.复制的过程 4.DNA损伤与修复 5.逆转录作用

Chapter 5 Macromolecules and Molecular Genetics The key informational macromolecules in prokaryotic and eukaryotic cells are DNA, RNA, and protein. Molecular Genetics deals with the mechanisms by which the information in DNA is replicated, and by which it can be transcribed into rNa and translated into specific proteins

《遗传与分子生物学实验》课程教学资源（讲义）碱变性法小量制备质粒DNA和DNA酶切