PreparingLambdaDNA
Preparing Lambda DNA1- Coliphage lambda DNA is a widely used vector for recombinant DNA. The middle third of its 48,000 bp contains no genes required for lytic growth and is, therefore, replaceable. The usual recombinant lambda DNA contains 80% lambda vector DNA and 20% insert, as compared to a usual cosmid DNA that contains 10% vector and 90% insert.Wild-type lambda is not very lytic, compared to coliphages T4 or T7......阅读全文
质粒的小量制备
· Standard (alkaline lysis) Mini-Prep (Goldberg Lab)Standard protocol for mini-prep and recipe for solution I, II and III.Alkaline Lysis Minip
质粒的小量制备
· Standard (alkaline lysis) Mini-Prep (Goldberg Lab)Standard protocol for mini-prep and recipe for solution I, II and III.Alkaline Lysis Minip
足迹法(Footprinting)
Footprinting Procedures· DNase I Footprinting (Mike A. Dyer)· DNase I footprintingDetermining the site of binding for a protein on a D
Construction-of-BAC-Libraries:Construction-of-a-BAC-library
Once high molecular weight (HMW) DNA has been prepared it must somehow be fragmented and DNA in the desired size range isolated. In general, as the de
Genomic-DNA-Extraction--PureLink™
实验概要The PureLink™ Genomic DNA Purification Kit allows rapid and efficient purification of genomic DNA. The kit is designed to efficiently isolate g
Lambda25型紫外可见光分光光度计操作方法
Lambda25型紫外可见光分光光度计波长范围(200—1100nm)其特点可作微量检测,最小样品量要求为10μl或50μl。灵敏度高、选择性强、易操作。 主要功能: 光谱扫描功能,用于定性分析; 时间驱动功能,用于研究物质吸光度随时间变化的功能。
Genomic-Cloning-Technical-Manual
Genomic Cloning Technical ManualAn optimal strategy for genomic cloning should meet three requirements: 1) a maximum number of recombinants should be
Easy-YAC-Preparation-Method
YAC TRANSFORMATION OF C. ELEGANS USING TOTAL YEAST GENOMIC DNA[This method is described in The Worm Breeder's Gazette (1997) A. Davies and J. Shaw
人免疫球蛋白轻链lambda(λIgLC)ELISA检测试剂盒使用说明
本试剂盒只能用于科学研究,不得用于医学诊断人(Human)免疫球蛋白轻链lambda(λ-IgLC)ELISA检测试剂盒用说明书检测原理试剂盒采用双抗体一步夹心法酶联免疫吸附试验(ELISA)。往预先包被免疫球蛋白轻链lambda(λ-IgLC)抗体的包被微孔中,依次加入标本、标准品、HRP标记的检
如何借助epMotion-5073l移液工作站完成微量体积的...(一)
如何借助epMotion 5073l移液工作站完成微量体积的qPCR反应体系构建在进行微量体系的液体操作时,如何避免人为误差与日间变化,如何保证结果的一致性提高实验效率?如果减少冗长枯燥的重复操作,减少昂贵试剂的使用,提升操作体验节省实验经费?本篇应用旨在介绍如何用10 μL分液工具实现全自动的微量
核酸的修饰酶
The restriction/modification system in bacteria is a small-scale immune systemfor protection from infection by foreign DNA. W. Arber and S. Linn (1969
Maxiprep-preparation-of-Plasmid-DNA
实验概要The PureLink™ HiPure Plasmid DNA Maxiprep Kit allows purification of 500–850 μg of high-quality plasmid DNA from 100–200 mL overnight E. coli cu
原子力显微镜研究λDNA组蛋白的相互作用
对DNA与组蛋白的相互作用的认识是我们进一步了解其功能和探讨生命现象的重要基础。原子力显微镜(AFM)成像分辨率高、成像直观,且样品制备简单,不需要经过脱水、抽真空、染色、包埋等 这些会使生物分子结构发生一定改变的复杂处理过程,并可对生物分子在近生理条件下检测它们的动态结构信息。
How-to-make-DEPCtreated-water-and-Tris-Buffer
Add 0.1 ml DEPC to 100 ml of the solution to be treated and shake vigorously to bring the DEPC into solution.Let the solution incubate for 12 hours at
Bacterial-transformation
IntroductionTransformation is the process of introducing foreign DNA (e.g plasmids, BAC) into a bacterium. Bacterial cells into which foreign DNA can
Isolation-of-genomic-DNA-from-bacteria
Note: This procedure does not work well with Gram + cocci.Transfer 1.5 mL overnight culture to a 1.5 mL microfuge tube, centrifuge for 30 sec, decant
Thermal-Inactivation
Thermal InactivationA simple, reversible way to a stop restriction reaction is by adding EDTA, which chelates Mg2+, thereby preventing catalysis. If f
酵母准备
Yeast DNA PreparationYeast Genomic Preparation (Gottschling Lab)Rapid method for yeast genomic DNA isolation Yeast DNA Preparation (rapid glass bead
Isolation-and-Quantification-of-Genomic-DNA-from-Mycobacterium-tuberculosis
Part A. Isolation of Nucleic AcidsNOTE: CAUTION! STEPS 1-10 SHOULD BE PERFORMED USING APPROPRIATE PROCEDURES FOR HANDLING MATERIAL POTENTIALLY CONTAMI
DNA重组(DNA-recombination)技术:DNA序列测定1
㈣ DNA聚合酶 如前所述,选用合适的DNA聚合酶进行测序反应也是保证测序质量的重要因素之一。常用于双脱氧末端终止法测序的有几种不同的酶: 1.大肠杆菌DNA聚合酶Ⅰ大片段(Klenow片段) 此酶是最早用于建立Sanger测序的酶。但通常会有两个问题:①Klenow片段的持续合成能力较
DNA重组(DNA-recombination)技术:DNA序列测定2
目前应用的两种快速序列测定技术是Sanger等(1977)提出的酶法(双脱氧链终止法)和Maxam(1977)提出的化学降解法。虽然其原理大相径庭,但这两种方法都同样生成相互独立的若干组带放射性标记的寡核苷酸,每组核苷酸都有共同的起点,却随机终止于一种(或多种)特定的残基,形成一系列以某一特定核苷酸
DNA重组(DNA-recombination)技术:DNA序列测定3
2.利用末端转移酶和α-32P-ddNTP标记DNA的3ˊ-末端 在二价阳离子存在下,末端转移酶催化dNTP加入DNA分子的3ˊ-羟基末端,如果作为底物的核苷酸经过修饰(如ddNTP),则可以在DNA的3ˊ-OH上仅加入一个核苷酸。对于双链DNA片段,亦存在DNA的两侧均被标记问题,可通过上述同
DNA重组技术(DNA-Recombination)
一、DNA 的酶切与连接(1)酶切反应:同质粒DNA 的鉴定,只不过是质粒DNA 换为载体DNA 。若大量酶切,则成比例增加。(2)加2倍体积的预冷无水乙醇和1/10体积的3mol/l NaAc混匀,-20℃2h以上。(3)15000rpm离心15min,弃上清。(4)加入75%乙醇洗涤2次,离心弃
PCR的下游应用
· Agarose Gel Electrophoresis of PCR Products (Robert H. Cruickshank)· Agarose Gel Electrophoresis of PCR Products (Immunology Resourc
IGLL5基因编码功能及结构描述
这个基因编码一种免疫球蛋白lambda样多肽它位于免疫球蛋白lambda位点内,但不需要体细胞重排来表达。该基因的第一外显子与免疫球蛋白可变基因无关;第二和第三外显子是连接1的免疫球蛋白lambda和免疫球蛋白lambda常数1基因片段。选择性剪接导致多个转录变体[由RefSeq提供,2010年5月
IGLL5基因编码功能及结构描述
这个基因编码一种免疫球蛋白lambda样多肽它位于免疫球蛋白lambda位点内,但不需要体细胞重排来表达。该基因的第一外显子与免疫球蛋白可变基因无关;第二和第三外显子是连接1的免疫球蛋白lambda和免疫球蛋白lambda常数1基因片段。选择性剪接导致多个转录变体[由RefSeq提供,2010年5月
IGFL3-基因突变与药物因子介绍
这个基因编码一种免疫球蛋白lambda样多肽它位于免疫球蛋白lambda位点内,但不需要体细胞重排来表达。该基因的第一外显子与免疫球蛋白可变基因无关;第二和第三外显子是连接1的免疫球蛋白lambda和免疫球蛋白lambda常数1基因片段。选择性剪接导致多个转录变体[由RefSeq提供,2010年5月
DNA的酶学操作
DNA的酶学操作DNA Modifying Enzymes (Michael Blaber)Introduction to bacterial restriction/modification system. It provides very useful background knowledge
DNA-Extraction-from-Blood
实验概要The ChargeSwitch® gDNA Purification Kits allow rapid and efficient purification of genomic DNA from small volumes of human blood. After preparin
其它PCR方法
· Standard PCR Protocol (Molecular Biology Techniques Manual)The followings are described in detailRecommended Reagent ConcentrationsRecommend