CoIPProtocol1

一 原理:IP是利用抗原蛋白质和抗体的特异性结合以及细菌蛋白质的“prorein A"特异性地结合到免疫球蛋白的FC片段的现象活用开发出来的方法。目前多用精制的prorein A预先结合固化在argarose的beads上,使之与含有抗原的溶液及抗体反应后,beads上的prorein A就能吸附抗原达到精制的目的。实验最需要注意点就是抗体的性质。抗体不同和抗原结合能力也不同,免染能结合未必能用在IP反应。建议仔细检查抗体的说明书。特别是多抗的特异性是问题。其次,要注意溶解抗原的缓冲液的性质。多数的抗原是细胞构成的蛋白,特别是骨架蛋白,缓冲液必须要使其溶解。为此,必须使用含有强界面活性剂的缓冲液,尽管它有可能影响一部分抗原抗体的结合。另一面,如用弱界面活性剂溶解细胞,就不能充分溶解细胞蛋白。即便溶解也产生与其它的蛋白结合的结果,抗原决定族被封闭,影响与抗体的结合,即使IP成功,也是很多蛋白与抗体共沉的悲惨结果。再次,为......阅读全文

Immunohistochemistry-Protocol-for-Frozen-Sections

实验概要The  following is a general procedure guide for preparation and staining of  acetone-fixed frozen tissues using a purified, unconjugated primary  

Simplified-Arabidopsis-Transformation-Protocol

(Brief version for those who are familiar with the method)Steve Clough and Andrew Bent, University of Illinois at Urbana-Champaign.Our present proto

Insect-DNA-Isolation-Protocol

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Intracellular-Cytokine-Staining-Protocol

实验概要A  modification of the basic immunofluorescence staining and flow  cytometric analysis protocol can be used for the simultaneous analysis  of surf

Blocking-with-immunizing-peptide-protocol

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Native-chromatin-immunoprecipitation-protocol

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miPS建系protocol

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Protein-Expression-and-Purification-Protocol

Step 1: Transform appropriate DNA plasmid into BL21(DE3) E. coli cells. These cells must be competent. (Protocol for how to make competent cells.)a) T

ELISA-Protocol-(General-Guidelines)

实验概要Sandwich  enzyme-linked immunosorbent assays (ELISAs) involve attachment of a  capture antibody to a solid phase support. Samples containing known

LentiVirus-Protocol

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The-protocol-for-LIC-by-Exonuclease-III

The protocol for LIC by Exonuclease III梁耀极1. Design the primers with 15-bp overlap;2. Digest the vector by proper restriction enzyme;For getting high

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大鼠IP10(IP10)ELISA试剂盒使用说明

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混凝土石子破碎设备Ip

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FlagHA-double-tag-IP

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IP防水等级测试方法(二)

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IP防水等级测试方法(一)

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Thawing-Cells-(Schreibers-protocol)

Thaw vial quickly in 37癈 water. Caution - vial can explode. Transfer cells to sterile, 15 mL centrifuge tube. Add 50 祃 warm FBS (fetal bovine

Marcantonio-Lab-Protocol-Manual——3

Sequencing Gel Preparing and Running a Sequencing Gel (6% Polyacrylamide/Urea)  A. Preparation of Gel Solution  1) Weigh out 50 g of Urea into a

Methylene-Blue-DNA-staining-protocol

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Bench-Top-Radioactive-Work-Protocol

Log in radioactive material received and deduct amount of radioactive material used in each experiment in Radioisotope Log Book.Clear your bench top w

Blocking-With-Immunizing-Peptide-(BL)-Protocol

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Marcantonio-Lab-Protocol-Manual——2

Quantitation of DNADetection of Nucleic Acids Using Absorption Spectroscopy The absorption of the sample can be measured at several different waveleng

Nucleolar-Isolation-Protocol2

7. Resuspend the pellet with 3 ml S1 solution (Figure 3). The pellet should be resuspended readily by pipetting up and down. A pellet that cannot be r

Single-tube-confirmation-PCR-protocol

The following colony PCR protocol has been designed to be performed in individual reaction tubes. We usually test three colonies from each transformat

Cell-Thawing/Cell-Freezing-Protocol

Freezing Cells:Cells should be growing well or known to be in log phaseCount, collect and pellet cells in a 15mL test tubeResuspend in freezing media

Northern-protocol(RULES-FOR-RNA-WORK)

1.         Wear gloves at all time including filling pipet tip in racks, filling jars with Eppendorf tubes, and weighing chemicals to prepare solution