| GO term | GO name | GO namespace | GO def |
| GO:0008757 | S-adenosylmethionine-dependent methyltransferase activity | molecular_function | Catalysis of the transfer of a methyl group from S-adenosyl-L-methionine to a substrate. [GOC:mah] |
| GO:0008168 | methyltransferase activity | molecular_function | Catalysis of the transfer of a methyl group to an acceptor molecule. [ISBN:0198506732] |
| GO:0016741 | transferase activity, transferring one-carbon groups | molecular_function | Catalysis of the transfer of a one-carbon group from one compound (donor) to another (acceptor). [GOC:jl, ISBN:0198506732] |
| GO:0016021 | integral component of membrane | cellular_component | The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane. [GOC:dos, GOC:go_curators] |
| GO:0016740 | transferase activity | molecular_function | Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2. [ISBN:0198506732] |
| GO:0140098 | catalytic activity, acting on RNA | molecular_function | Catalytic activity that acts to modify RNA, driven by ATP hydrolysis. [GOC:molecular_function_refactoring, GOC:pdt] |
| GO:0003824 | catalytic activity | molecular_function | Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic. [GOC:vw, ISBN:0198506732] |
| GO:0031167 | rRNA methylation | biological_process | The posttranscriptional addition of methyl groups to specific residues in an rRNA molecule. [GOC:mah] |
| GO:0008170 | N-methyltransferase activity | molecular_function | Catalysis of the transfer of a methyl group to the nitrogen atom of an acceptor molecule. [GOC:ai] |
| GO:0008173 | RNA methyltransferase activity | molecular_function | Catalysis of the transfer of a methyl group from a donor to a nucleoside residue in an RNA molecule. [GOC:mah] |