a 5'-end (5'-triphosphoguanosine)-(2'-O-methyladenylyl)-adenylyl-cytidylyl-adenosine in mRNA + S-adenosyl-L-methionine = a 5'-end (N(7)-methyl 5'-triphosphoguanosine)-(2'-O-methyladenylyl)-adenylyl-cytidylyl-adenosine in mRNA + S-adenosyl-L-homocysteine
a 5'-end (5'-triphosphoguanosine)-(2'-o-methyladenylyl)-adenylyl-cytidylyl-adenosine in mrna + s-adenosyl-l-methionine = a 5'-end (n(7)-methyl 5'-triphosphoguanosine)-(2'-o-methyladenylyl)-adenylyl-cytidylyl-adenosine in mrna + s-adenosyl-l-homocysteine
a 5'-end (5'-triphosphoguanosine)-(2'-O-methyladenylyl)-adenylyl-cytidylyl-adenosine in mRNA + S-adenosyl-L-methionine = a 5'-end (N(7)-methyl 5'-triphosphoguanosine)-(2'-O-methyladenylyl)-adenylyl-cytidylyl-adenosine in mRNA + S-adenosyl-L-homocysteine
a 5'-end (5'-triphosphoguanosine)-(2'-o-methyladenylyl)-adenylyl-cytidylyl-adenosine in mrna + s-adenosyl-l-methionine = a 5'-end (n(7)-methyl 5'-triphosphoguanosine)-(2'-o-methyladenylyl)-adenylyl-cytidylyl-adenosine in mrna + s-adenosyl-l-homocysteine