Cite as: Cold Spring Harb. Protoc.; 2006; doi:10.1101/pdb.prot4050
| Protocol |
This protocol was adapted from Molecular Cloning, 3rd edition, by Joseph Sambrook and David W. Russell. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY, USA, 2001
| The first 15% of the full text of this article appears below. |
INTRODUCTION
Separation of RNAs according to size is the first stage in northern blotting and hybridization. The method described in this protocol uses formaldehyde to denature the RNA, ethidium bromide to stain it, and electrophoresis through agarose gels containing 2.2 M formamide to separate the resulting formaldehyde-RNA-ethidium adducts. IMPORTANT: Prepare all reagents used in this protocol with Diethyl pyrocarbonate (DEPC)-treated H2O.
MATERIALS
10x Formaldehyde gel-loading buffer
10x MOPS electrophoresis buffer
Ethidium bromide (200 µg/ml)
Formaldehyde
Formamide
Purchase or prepare a distilled-deionized preparation of this reagent and store in small aliquots under nitrogen at -20°C.
RNA samples
METHOD
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