Gebhard von Jagow, Arnold Revzin's A Practical Guide to Membrane Protein Purification PDF

By Gebhard von Jagow, Arnold Revzin

ISBN-10: 0080571727

ISBN-13: 9780080571720

ISBN-10: 0127255508

ISBN-13: 9780127255507

A functional advisor to Membrane Protein Purification is written in particular for researchers who've a few familarity with separation of water-soluble proteins, yet who will not be conscious of the pitfalls they face with membrane proteins. This consultant offers options in a concise shape, emphasizing the facets particular to membrane proteins. The e-book explains the rules of the equipment, allowing researchers and scholars new to this region to evolve those recommendations to their specific wishes. the second one quantity within the sequence, this e-book is a vital guide for investigations of constitution and serve as of local membrane proteins, in addition to for purification of those proteins for immunization and protein sequencing.

Separation, Detection, and Characterization of organic Macromolecules is a brand new sequence of laboratory courses. every one quantity makes a speciality of an issue of significant curiosity to scientists and scholars in biomedical and organic examine. Introductory chapters are by way of transparent, step by step protocols that current ideas and perform. those concise manuals are designed for optimum knowing of equipment in addition to for functional benchtop use.

  • Provides basic instructions and methods for isolation of membrane proteins
  • Describes specified functional methods which have been the widest functions, and lowest really expert apparatus needs
  • Gives specified emphasis to new local and denaturing electrophoresis techniques
  • Explains variations of thoughts used for water-soluble proteins

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Additional resources for A Practical Guide to Membrane Protein Purification

Example text

A. Hydroxylapatite C h r o m a t o g r a p h y Crystalline hydroxylapatite which allows a high flow rate through columns can be prepared easily as described in Chapter 5, Section II. Various commercial preparations of hydroxylapatite, usually displaying lower flow rates, are available from a variety of suppliers. 1. General Considerations a. Preparing Hydroxylapatite Columns After packing the column with hydroxylapatite, equilibrate with buffer by passing at least one column volume of phosphate buffer through the column.

Thus, octylglucoside (high CMC) will be removable by dialysis, whereas Triton X-100 and dodecylmaltoside (low CMC) will not (see Chapter 1, Section VI,B). Precipitation of membrane proteins may occur either after removal of detergent or, despite the presence of nondialyzable detergent, at low ionic strength or at pH values close to the isoelectric point. If the pH is moderate, the precipitated membrane proteins will be in the native state. The proteins in these cases precipitate together with bound detergent; excess detergent is removed with the supernatant.

A narrow pH gradient (pH 7 - 8 ) is then generated within the column, and proteins elute in the order of decreasing isoelectric points. 5 column volumes will be required when using diluted Polybuffer 96 as suggsted in Table 1. ] Usually the pH range is chosen so that the protein of interest elutes after one-third to one-half of the gradient. Such large volumes may be detrimental for membrane proteins (see below). 5, 25 m M piperazine-HCl pH 4 . 3, 25 m M TrisCH3COOH 3 7-6 PBE 94 7-5 PBE 94 7-4 PBE 94 6-5 PBE 94 6-4 PBE 94 5-4 PBE 94 Reprinted from Chromatofocusing with Polybuffer™ and PBE™ with permission from Pharmacia.

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A Practical Guide to Membrane Protein Purification by Gebhard von Jagow, Arnold Revzin

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