Catalysis of the transfer of a methyl group to the sulfur atom of an acceptor molecule.

Catalysis of the transfer of a methyl group from a donor to a nucleoside residue in an RNA molecule.

Catalysis of the transfer of a methyl group from S-adenosyl-L-methionine to a nucleoside residue in an mRNA molecule.

Catalysis of the transfer of a methyl group from a donor to a nucleoside residue in a tRNA molecule.

Catalysis of the reaction: S-adenosyl-L-methionine + tRNA = S-adenosyl-L-homocysteine + tRNA containing N7-methylguanine.

Catalysis of the reaction: succinate + quinone = fumarate + quinol.

Interacting selectively with the enzyme adenylate cyclase.

Catalysis of the reaction: UDP-glucose + N-acylsphingosine = UDP + D-glucosyl-N-acylsphingosine.

Catalysis of the reaction: CoQH2 + 2 ferricytochrome c = CoQ + 2 ferrocytochrome c.

Catalysis of the reaction: cholesterol + NADPH + H+ + O2 = 7-alpha-hydroxycholesterol + NADP+ + H2O.

Catalysis of the reaction: (6R)-6-(L-erythro-1,2-dihydroxypropyl)-5,6,7,8-tetrahydro-4-alpha-hydroxypterin = (6R)-6-(L-erythro-1,2-dihydroxypropyl)-7,8-dihydro-6H-pterin + H2O.

Catalysis of the hydrolysis of proteins, including elastin. Preferential cleavage: Ala-Xaa.

Catalysis of the reaction: an acetic ester + H2O = an alcohol + acetate.

Catalysis of the reaction: quercetin + O2 = 2-protocatechuoylphloroglucinolcarboxylate + CO.

Catalysis of the hydrolysis of proteins with broad specificity for peptide bonds, with preference for a residue bearing a large hydrophobic side chain at the P2 position. Does not accept Val at P1'.

Catalysis of the reaction: (2S)-2-methylacyl-CoA = (2R)-2-methylacyl-CoA.

Catalysis of the reaction: S-adenosyl-L-methionine + nicotinamide = S-adenosyl-L-homocysteine + 1-methylnicotinamide.

Catalysis of the reaction: protein L-methionine + thioredoxin disulfide = protein L-methionine S-oxide + thioredoxin.

Catalysis of the reaction: 6-phospho-D-gluconate + NADP+ = 6-phospho-2-dehydro-D-gluconate + NADPH.

Catalysis of the reaction: sarcosine + H2O + O2 = glycine + formaldehyde + H2O2.