A relatively simple and inexpensive method has been developed for the preparation of highly purified rabbit reticulocyte globin mRNA. After phenol extraction, polysomal RNA was chromatographed on Sigmacell type 38 cellulose and Sepharose 4B. The resulting mRNA preparation has a purity in excess of 9
A simple process for the purification of arachidonic acid
โ Scribed by E.J. Corey; Stephen W. Wright
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- French
- Weight
- 117 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Pure arachidonic acid ( L ) and docosahexanoic acid ( 2 ) are available by a two-step purification method from commercial 50% acids with high efficiency.
Arachidonic acid ( J_ ) is an important starting material for biochemical studies and for the synthesis of eicosanoids such as leukotrienes and inhibitors of leukotriene biosynthesis. ' The high price of commercially available pure arachidonic acid has prompted the development of methods for the purification of impure (50%) but less expensive commercial material.
Previous methods2 have involved several laborious and expensive steps including chromatographic purification on silver nitrate impregnated silica gel.
๐ SIMILAR VOLUMES
We describe a straightforward and simple method for obtaining pure and active preparations of type 1 ribosome inactivating proteins (RIPs). The very high isoelectric point values, characteristic of these proteins, allow this purification in a single chromatographic step.