mRNA Guanylyltransferases

**Definition:** Enzymes that catalyze the transfer of GMP residue from GTP to 5' end of RNA to form a cap structure identified as G(5')pppN. They can also modify synthetic poly(A) & poly(G) to form m7G(5')pppAn & m7G(5')pppGn.

**Tree numbers:** - D08.811.277.352.650.600.800 - D08.811.913.696.445.018

**Synonyms:** - GTP mRNA Guanylyltransferase - m-RNA Guanylyltransferase - mRNA 5'-guanylyltransferase - mRNA Capping Enzyme - mRNA Guanylyltransferase - RNA Guanylyltransferase