Saghai-Maroof MA Soliman KM Jorgensen RA & Allard RW (1984) PNAS 81:8014-8018 DNA successfully isolated from fungal species of Cochliobolus Aternaria and Fusarium. The key elements in this ...
Phenol-chloroform DNA extraction from sand flies 1. Crash Individual sand flies in 0.5 ml lysis buffer (50 mM NaCl 10 mM EDTA 50 mM Tris-HCl pH 8). 2. Incubate The sand fly homogena ...
Michael Koelle's LabDepartment of Molecular Biophysics and Biochemistry Yale University http://info.med.yale.edu/mbb/koelle/protocols/protocol_subcloning.html ...
Map-Based Cloning of KAM2 Map-based cloning of the KAM2 gene was performed essentially as described previously (Tamura et al. 2005). We used codominant cleaved amplified polymorphic sequence markers ( ...
These procedures were originally devised in Richard Palmiter's lab for use with tail dots (DNA spotted onto a nitrocellulose filter and probed for a transgene; quicker than doing southerns) and subseq ...
macerate tissue in Eppendorf tube without butter at RT add 400 ml extraction buffer vortex for 4 sec leave sample at RT until other samples are ready (> 1 h) spin in microfuge for 1 min ...
To efficiently determine the chromosomal location of phenotypic mutants we designed a genome-wide mapping strategy that can be used in any crop for which a dense AFLP (Amplified Fragment Length Polymo ...
Author: Laura-Lee Boodram Source: Laura-Lee Boodram Department of Life Sciences The University of the West Indies Abstract: The protocol is simple and fairly rapid. It does not require the use of orga ...
自杀性质粒载体完全可以自己构建,只要保证两点: 1.自杀性质粒载体不能在你的宿主菌里进行复制,也就是说载体上不能有能在宿主菌中复制的复制子; 2.要由筛选标记. 自杀性质粒载体不能在你的宿主菌里进行复制,否则会导致细菌染色体突变株的构建失败。但是在构建时,要注意以下方面: 1、在制备质粒载体和DNA插入片断时 2μg 5kb大小的线状DNA大约含有1.4poml/L5'末端磷酸。5&lsqu ...
DNA Isolation by a Cleared Lysate Method Followed by Double Acetate Precipitation Version 3b - updated September 26 1999 The Most Recent Roe Lab Implementation (by Feng Chen Hau-Qin Pan and Fu Ying) A ...
Gene cloning or recombinant DNA technology is the joining of two or more segments of DNA to generate a single DNA molecule capable of autonomous replication within a given host (1). Ligase enzym ...
Important : Extract the DNA within one week of receiving samples. Samples that have been processed should be frozen to prevent degradation. Freeze samples between use each day. 1.Add 600 ml of 50 mM ...
Recovering DNA from agarose gels Paul N. Hengen Ph.D. (July 14 1999) Introduction Methods and reagents is a unique monthly column that highlights current discussions in the newsgroup bionet.molbio.met ...
1) Use Pharmacia #27-4564-01. With clean flamed scissors and forceps weigh 0.25 g/50 ml conical and add 50 ml/conical of 0.02 M Tris pH 7.6. Allow to dissolve over several days at 4℃. 2) Vortex. Draw ...
H. Simmler and H. Singpiel Acconovis GmbH Lindenhofstr. 42-44 68163 Mannheim Germany eMail: simmler@acconovis.com R. M¨anner Universit¨at Mannheim B6 23-29 68131 Mannheim Germany maenner@ti.un ...
作分子生物学实验,核酸纯化、酶切、克隆算是最基本的步骤了。因为要做定向克隆,通常要作双酶切。为了省时省事儿,我们常常想方设法把两个酶放在一起切。可是事情并非总那么称心如意——两个酶经常在一起闹别扭,不是反应温度不同啦,就是Buffer不同,有时候两个酶切位点连在一起,必须先切一个再切另一个,否则就切不动——因为有的酶除了识别位点之外还需要旁边留有几个 ...
一、实验目的 : 1、 掌握质粒DNA 分离,纯化的原理 2、 学习煮沸法快速提取质粒DNA 的方法 3、 学习DNA的限制性酶切的基本技术 4 、 学习利用琼脂糖电泳测定DNA片段的长度 二、实验原理 在基因工程中,DNA 分子的切割是由限制性内切酶来完成的。限制性内切酶能识别特定的DNA 序列,在一定的条件下切断双链DNA 。限制性内切酶的作用效率是受多方面因素影响的,如反应温度,缓 ...
DNA是遗传信息的载体,是最重要的生物信息分子,是分子生物学研究的主要对象,因此DNA的提取也应是分子生物学实验技术中的最重要、最基本的操作,如不能有效的完成DNA提取方面的工作,那就根本谈不上进行分子生物学方面的实验。在DNA提取过程中应做到1,根据不同研究需要,保证结构的相应完整性;2,尽量排除其它大分子成分的污染(蛋白质、多糖及RNA等);3,保证提取样品中不含对酶有抑制作用的有机溶剂及高浓 ...
在体外将DNA分子片段与载体DNA片段连接,转入细胞获得大量拷贝的过程中DNA分子克隆(或基因克隆)。其基本步骤包括:制备目的基因→将目的基因与载体用限制性内切酶切割和连接,制成DNA重组→导入宿主细胞→筛选、鉴定→扩增和表达。载体(vecors)在细胞内自我复制,并带动重组的分子片段共同增殖,从而产生大量的DNA分子片段。主要目的是获得某一基因或NDA片段 ...
MassPREP自动酶切仪操作步骤 一 开机前检查: 1 检查仪器台面(DECK)上所有的实验材料(Labware)。 2 检查SystemWater 水桶的水位。 3 检查恒温循环水浴(Chiller)水箱的水位,并定期更换或填充Chiller 中的循环水。 4 倒掉废液桶中的废液。 二 开机步骤: 打开Chiller、Heater、仪器及计算机电源,进入WinPREP程序 : 1 仪器初 ...