Molecular weight determination of glyoxalated RNA by sedimentation centrifugation
โ Scribed by Micheal A. Nash; Marjorie Johnson; John E. Knesek; James C. Chan; James L. East
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 733 KB
- Volume
- 111
- Category
- Article
- ISSN
- 0003-2697
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โฆ Synopsis
A rapid, reliable sedimentation centrifugation technique has been developed to measure the molecular weights of rather large glyoxalated RNAs. A distinctive feature of this method is that the glyoxalated RNAs can be analyzed in sucrose gradients containing no denaturant. This feature allowed us to compute the sedimentation coefficients of glyoxalated RNAs by a comparison with those of native, untreated RNA markers. These values then were used to obtain accurate molecular weight estimates by applying the linear log-log relation between the molecular weight of an RNA and its sedimentation -coefficient.
๐ SIMILAR VOLUMES
Determination of the size of a population of nucleic acids can be achieved by several distinct methods. Most of these methods are cumbersome and require complicated equipment or techniques. We demonstrate here the use of a differential pressure capillary viscometer for the rapid and simple determina
The Molecular Weight of a Fast Sedimenting MS2 RNA Form H. SLEGERS and W. FIERS [Article in Biopolymers, 9, 1373 (1970)l I n a previous publication we described conditions for the formation of a fast sedimenting structure formed by the reaction of formaldehyde with MS2 RNA a t acidic pH.1 The molec
## Abstract Large molecular weight bacteriophage G DNA, about five times larger than T2 DNA, was used to test Zimm's theory [(1974) __Biophys. Chem.__ **1**, 279โ291] for the effect of rotor speed on the sedimentation of large linear monodisperse DNA. Sedimentation profiles from neutral sucrose gra