The breakdown into simpler components of sphingomyelin, N-acyl-4-sphingenyl-1-O-phosphorylcholine.

Interacting selectively with purine nucleotides, any compound consisting of a purine nucleoside esterified with (ortho)phosphate.

The formation from simpler components of sphingomyelin, N-acyl-4-sphingenyl-1-O-phosphorylcholine.

The chemical reactions involving glycosphingolipids, any compound with residues of sphingoid and at least one monosaccharide.

Catalysis of the reaction: pyrophosphate + nicotinamide nucleotide = PRPP + niacinamide.

The formation from simpler components of glycosphingolipid, a compound with residues of sphingoid and at least one monosaccharide.

The breakdown into simpler components of ganglioside, a ceramide oligosaccharide carrying, in addition to other sugar residues, one or more sialic residues.

Combining with anaphylatoxin to initiate a change in cell activity.

The action of a molecule that contributes to the structural integrity of the lens of an eye.

Combining with anaphylatoxin C3a to initiate a change in cell activity.

Combining with anaphylatoxin C5a to initiate a change in cell activity.

Enables the directed movement of substances (such as macromolecules, small molecules, ions) into, out of, within or between cells.

Combining with bombesin to initiate a change in cell activity.

Allows the regulatable energy-independent passage of ions across a lipid bilayer down a concentration gradient.

Combining with bradykinin to initiate a change in cell activity.

intracellular ligand-gated ion channel activity

Combining with calcitonin to initiate a change in cell activity.

intracellular ligand-gated calcium channel activity

Combining with cannabinoids to initiate a change in cell activity.

Interacting selectively with myosin, any of a superfamily of molecular motor proteins that bind to actin and use the energy of ATP hydrolysis to generate force and movement along actin filaments.

The chemical reactions involving ceramides, any N-acylated sphingoid.

Catalysis of the cleavage of the C-terminal propeptide at Ala-Asp in type I and II procollagens and at Arg-Asp in type III.