2.1.1.56	S-adenosyl-L-methionine + a 5'-(5'-triphosphoguanosine)-[mRNA] = S-adenosyl-L-homocysteine + a 5'-(N7-methyl 5'-triphosphoguanosine)-[mRNA]	active site is located at His682 and Tyr683	485468	
2.1.1.56	S-adenosyl-L-methionine + a 5'-(5'-triphosphoguanosine)-[mRNA] = S-adenosyl-L-homocysteine + a 5'-(N7-methyl 5'-triphosphoguanosine)-[mRNA]	in-line mechanism of methyl transfer without direct contact between the enzyme and the N7 atom of guanine, which is the attacking nucleophile, the methyl carbon of S-adenosyl-L-methionine, or the sulfur of S-adenosyl-L-methionine/S-adenosyl-L-homocysteine, enzyme-ligand structures, active site structure	659921	
2.1.1.56	S-adenosyl-L-methionine + a 5'-(5'-triphosphoguanosine)-[mRNA] = S-adenosyl-L-homocysteine + a 5'-(N7-methyl 5'-triphosphoguanosine)-[mRNA]	lipid-binding site, membrane binding activity of wild-type and diverse mutants	485465	
2.1.1.56	S-adenosyl-L-methionine + a 5'-(5'-triphosphoguanosine)-[mRNA] = S-adenosyl-L-homocysteine + a 5'-(N7-methyl 5'-triphosphoguanosine)-[mRNA]	R may be guanosine or adenosine	-	
2.1.1.56	S-adenosyl-L-methionine + a 5'-(5'-triphosphoguanosine)-[mRNA] = S-adenosyl-L-homocysteine + a 5'-(N7-methyl 5'-triphosphoguanosine)-[mRNA]	RNA triphosphatase, RNA guanylyltransferase, and RNA (guanine-N7-)methyltransferase form the mRNA capping enzyme complex consiting of a small and a large subunit	485455, 485456, 485463, 485465, 485467, 485468, 485470, 485472	
2.1.1.56	S-adenosyl-L-methionine + a 5'-(5'-triphosphoguanosine)-[mRNA] = S-adenosyl-L-homocysteine + a 5'-(N7-methyl 5'-triphosphoguanosine)-[mRNA]	substrate binding sites	485472	
2.1.1.56	S-adenosyl-L-methionine + a 5'-(5'-triphosphoguanosine)-[mRNA] = S-adenosyl-L-homocysteine + a 5'-(N7-methyl 5'-triphosphoguanosine)-[mRNA]	subunit interaction in vitro and in vivo is a necessary condition for full enzyme activity	485468