mRNA Cap 2'-O-Methyltransferase (50U/ul)

mRNA CAP2-xymethyltransferase is a recombinant protein derived from vaccinia virus. The enzyme adds a methyl group at the 2´-O position of the first nucleotide adjacent to the cap structure at the 5´ end of the RNA. The enzyme utilizes S-adenosylmethionine (SAM) as a methyl donor to methylate capped RNA (cap-0) resulting in a cap-1 structure.mRNA Cap 2´-O-Methyltransferase specifically requires RNA with an m7GpppN cap as substrate.

mRNA cap-1 structure may improve expression during microinjection and transfection experiments.

One unit is defined as the amount of enzyme required to methylate 10 pmoles of 80 nt long capped RNA transcript in 1 hour at 37°C.

RNA prepared using in vitro transcription and cap analog should be purified prior to use and resuspended in nuclease-free water. EDTA and salts should not be present in the solution.

Heating the RNA at 65°C for 5 minutes prior to incubation with the enzyme removes secondary structure on the 5´ end of the transcript. Extend time to 10 minutes for transcripts with known highly structured 5´ ends.

Supplied as 0.2 μm filtered solution in 20 mM Tris, 100 mM NaCl, 1 mM TCEP, 0.1 mM EDTA, pH 8.0 with glycerol as protectant.

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This product is supplied and shipped on dry ice.

• The product MUST be stored at -20°C or lower upon receipt.
• -20°C for 12 months under sterile conditions.