mRNA Vaccinia Capping Enzyme GMP-grade (10 U/μL)



Eukaryotes mRNA forms a special structure at the 5'end after transcription, which is the cap structure. The cap structure plays an important role in the stability, transportation, and translation of mRNA. The vaccinia virus capping enzyme is an effective enzyme that can catalyze the formation of the cap structure. It"s composed of two subunits D1 and D12. It also has RNA triphosphatase activity, guanylate acyltransferase activity, and guanine methyltransferase activity that could connect the 7-methylguanine cap structure (m7Gppp) to the 5'end of the RNA (m7Gppp5'N). Vaccinia virus capping enzyme can cap the RNA in correct direction within one hour when present at a suitable concentration of capping buffer, guanosine triphosphate (GTP), S-adenosylmethionine (SAM), etc.
This product is produced by GMP process requirements and provided in a liquid form, used for in vivo/in vitro pre-translation mRNA capping reaction or mRNA 5'end labeling reaction.


  • Isolated from a recombinant source
  • Tested for the absence of endonucleases, exonucleases, RNases


  • Capping mRNA before translation assays/in vitro translation
  • Labeling 5´ end of mRNA


Source Recombinant E. coli with vaccinia virus capping enzyme gene
Optimum Temperature 37℃
Storage Buffer 20 mM Tris-HCl pH 8.0, 100 mM NaCl, 1 mM DTT, 0.1 mM EDTA, 0.1% Triton X-100, 50% glycerin
Unit Definition 1 unit: The amount of enzyme required to incorporate 10 pmol GTP (α- 32P) into a transcript with 80 nucleotides (80 nt) at 37℃ within 1 hour. 


Components No. Name 10614ES84 (2,000 U) 10614ES92 (10,000 U) 10614ES96 (100,000 U) 10614ES99 (5 MU)
10614 mRNA Vaccinia Capping Enzyme GMP-grade (10 U/μL) 200 μL 1 mL 10 mL 500 mL

Shipping and Storage

mRNA Vaccinia Capping Enzyme GMP-grade products are shipped with dry ice and can be stored at -15℃ ~ -25℃ for one year.


Figure 1. The capping efficiency almost reached 100% by the vaccinia capping system from YEASEN. Nucleic acid mass spectrometry before the cap reaction was shown in Figure 1A. Nucleic acid mass spectrometry after the cap reaction was shown in Figure 1B.

COA Please fill out the COA application form

Catalog No.:*


phone Number:*