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Preparation of Functional, Fluorescently Labeled mRNA Capped with Anthraniloyl-m(7)GpppG
Artem V Domashevskiy1, David J Rodriguez2, Dilantha Gunawardana3,4
1Department of Sciences, John Jay College of Criminal Justice, City University of New York, New York, NY, USA. adomashevskiy@jjay.cuny.edu.
Abstract:
Fluorescent mRNA molecules offer a wide range of applications for studying capping/decapping reactions, translation, and other biophysical studies. Furthermore, fluorescent tags prove invaluable for tracking RNA molecules in cells. Here, we describe an efficient synthesis of a fluorescent cap analog, anthranioyl-GTP, its purification, and in vitro cap labeling of transcribed mRNA catalyzed by the recombinant vaccinia capping enzyme to produce anthranioyl-m(7)GpppG-capped RNA.
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Pre-mRNA Processing: Modification of pre-mRNA Ends
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a cap to the 5' end of the growing transcript. In this process, a 5' phosphate is replaced by modified guanosine that has a methyl group attached (7-methyl guanosine). This 5' cap helps...
pre-mRNA Processing
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