EOG80VZ40 GO:0005634 23/87 nucleus cellular_component "A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent." [GOC:go_curators] EOG80VZ40 GO:0004482 23/87 mRNA (guanine-N7-)-methyltransferase activity molecular_function "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] EOG80VZ40 GO:0003723 22/87 RNA binding molecular_function "Interacting selectively and non-covalently with an RNA molecule or a portion thereof." [GOC:mah] EOG80VZ40 GO:0036265 1/87 RNA (guanine-N7)-methylation biological_process "The addition of a methyl group to the N7 atom in the base portion of a guanine nucleotide residue in an RNA molecule." [GOC:BHF, GOC:rl] EOG80VZ40 GO:0006370 1/87 7-methylguanosine mRNA capping biological_process "Addition of the 7-methylguanosine cap to the 5' end of a nascent messenger RNA transcript." [GOC:mah, PMID:9266685]