人教版高中生物必修2第3章第3节 DNA的复制导学案

All DNA is recombinant DNA. Genetic exchange works constantly to blend and rearrange chromosomes, most obviously during meiosis, when homologous chromosomes pair prior to the

Transcription is very similar to DNA replication but there are some important differencesi 1 RNA is made of ribonucleotides 2. RNA polymerase catalyzes the reaction 3. The synthesized RNa does not remain base-paired to the template DNA strand 4. Less accurate(error rate: 10-4)

There are genetic processes that rearrange DNA sequences and thus lead to a more dynamic genome structure

Molecular Biology course CHAPTER 9: The mutability and repair of DNA

一、遗传密码 遗传密码(genetic code):是生物蛋白质合成的密码, 是遗传信息的单位,由A、U、C、G组成。 遗传密码又是如何翻译呢? 首先是以DNA的一条链为模板合成与它互补的 mRNA,根据碱基互补配对的规律,在这条mRNA链 上,A变为U,T变为A,C变为G,G变为C 因此,这条mRNA上的遗传密码与非模板DNA链 是一样的,所不同的只是U代替了T。然后再由mRNA 上的遗传密码翻译成多肽链中的氨基酸序列

复旦大学：《生物化学A Biochemistry》课程PPT教学课件（下，分子生物学）Molecular Biology）DNA复制 DNA Replication

复旦大学：《生物化学A Biochemistry》课程PPT教学课件（下，分子生物学）Molecular Biology）DNA修复 DNA Repair

肌红蛋白的结构与功能 血红蛋白的结构、功能及镰刀形贫血病 蛋白质结构与功能的关系及其研究方法 血红蛋白分子病 Molecular Disease of Hemoglobin 免疫体系分子的识别机制 足迹法研究DNA结合蛋白的结合位点 DNA Foot Printing 蛋白水解酶与人类疾病 甲型流感病毒与艾滋病毒 膜蛋白、受体与信号转导 转基因动物 Transgenic Animals

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