Catalysis of the hydrolysis of alpha-glycosidic linkages in oligo- or poly(sialic) acids.

Catalysis of the reaction: polyphosphate(n) + H2O = polyphosphate(n-1) + phosphate.

Catalysis of the reaction: 6-deoxycathasterone + O2 + a reduced electron acceptor <=> 6-deoxoteasterone + H2O + an oxidized electron acceptor.

The chemical reactions and pathways involving orcinol (5-methyl-1,3-benzenediol), an aromatic compound derived from the fermentation of lichen, and synthesized, probably as a fungicide, by some higher plants.

Catalysis of the reaction: H+ + UDP-alpha-D-glucuronate = UDP-alpha-D-apiose + carbon dioxide.

The chemical reactions and pathways involving organomercury compound, any organic compound containing a mercury atom.

The chemical reactions and pathways involving organometals, any metal-containing organic compound, especially one in which the metal atom is linked directly to one of more carbon atoms.

Catalysis of the reaction: (S)-naringenin(1-) + S-adenosyl-L-methionine <=> sakuranetin + S-adenosyl-L-homocysteine + H+.

Catalysis of the reaction: (S)-naringenin + S-adenosyl-L-methionine = 2 H+ + ponciretin + S-adenosyl-L-homocysteine.

The chemical reactions and pathways involving organotin, an organic compound containing a tin atom.

Catalysis of the reaction: flavan-3,3',4,4',5,5',7-heptol + O2 + 2-oxoglutarate = H+ + delphinidin + 2 H2O + carbon dioxide + succinate.

The chemical reactions and pathways involving tri-n-butyltin, an organometallic compound composed of three butyl chains attached to a tin atom. Tri-n-butyltin is used as an antifouling agent in ship bottom paints and can be toxic to many marine organisms.

Catalysis of the reaction: eriodictyol + S-adenosyl-L-methionine <=> H+ + homoeriodictyol + S-adenosyl-L-homocysteine.

The chemical reactions and pathways involving any organosilicon, organic compounds that contain silicon, a nonmetal element analogous to carbon.

Catalysis of the reaction: eriodictyol + S-adenosyl-L-methionine <=> H+ + hesperetin(1-) + S-adenosyl-L-homocysteine.

The chemical reactions and pathways involving organosilicons, organic compounds that contain silicon, in the presence of oxygen.

Catalysis of the reaction: phytyl phosphate(2-) + a nucleoside triphosphate <=> (E)-3,7,11,15-tetramethylhexadec-2-en-1-yl diphosphate + a nucleoside diphosphate.

The chemical reactions and pathways involving organosilicons, organic compounds that contain silicon, in the absence of oxygen.

Catalysis of the reaction: 6-deoxotyphasterol + O2 + a reduced electron acceptor = 6-deoxocastasterone + H2O + an oxidized electron acceptor.

Catalysis of the reaction: NADP(3-) + a very-long-chain 2,3,4-saturated fatty acyl CoA <=> NADPH(4-) + H+ + a very-long-chain trans-2,3-dehydroacyl-CoA.