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The northern blot, or RNA blot, [1] is a technique used in molecular biology research to study gene expression by detection of RNA (or isolated mRNA) in a sample. [2] [3] With northern blotting it is possible to observe cellular control over structure and function by determining the particular gene expression rates during differentiation and ...
Blotting Compass. In molecular biology and genetics, a blot is a method of transferring large biomolecules (proteins, DNA or RNA) onto a carrier, such as a membrane composed of nitrocellulose, polyvinylidene fluoride or nylon.
Northern blotting is a laboratory technique that produces similar information. It is slower and less quantitative, but also produces accurate information about the size of the target RNA. Nuclease protection assay products are limited to the size of the initial probes due to the destruction of the non-hybridized RNA during the nuclease ...
The following experimental techniques are used to measure gene expression and are listed in roughly chronological order, starting with the older, more established technologies. They are divided into two groups based on their degree of multiplexity. Low-to-mid-plex techniques: Reporter gene; Northern blot; Western blot [135]
Compared to other tests, southern blot is a complex technique that has multiple steps and these steps require equipment and reagents that are expensive. [10] High quality and large amounts of DNA are needed. [10] Southern blotting is a time consuming method and can only estimate the size of the DNA since it is a semi-quantitative method. [10]
Since its introduction in 1977, Northern blot has been used extensively for RNA quantification despite its shortcomings: (a) time-consuming technique, (b) requires a large quantity of RNA for detection, and (c) quantitatively inaccurate in the low abundance of RNA content.
In molecular biology, a hybridization probe (HP) is a fragment of DNA or RNA, usually 15–10000 nucleotides long, which can be radioactively or fluorescently labeled.HPs can be used to detect the presence of nucleotide sequences in analyzed RNA or DNA that are complementary to the sequence in the probe. [1]
Northern blot; Nuclear run-on assay; Radioactivity in the life sciences; Southern blot; Differential centrifugation (sucrose gradient) Toeprinting assay; Several bioinformatics methods, as seen in list of RNA structure prediction software