GO:0004482

mRNA (guanine-N7-)-methyltransferase activity

Details: 
Catalysis of the reaction: S-adenosyl-L-methionine + G(5')pppR-RNA = S-adenosyl-L-homocysteine + m7G(5')pppR-RNA. m7G(5')pppR-RNA is mRNA containing an N7-methylguanine cap; R may be guanosine or adenosine. [EC:2.1.1.56]
Evidence Code: 
ISS