The breakdown into simpler components of galactosylceramides, any compound formed by the replacement of the glycosidic hydroxyl group of a cyclic form of galactose by a ceramide group.

Catalysis of the cleavage of the N-propeptide of collagen chain alpha-1(I) at Pro-Gln and of alpha-1(II) and alpha-2(I) chains at Ala-Gln.

The chemical reactions involving sphingomyelin, N-acyl-4-sphingenyl-1-O-phosphorylcholine, any of a class of phospholipids in which the amino group of sphingosine is in amide linkage with one of several fatty acids, while the terminal hydroxyl group of sphingosine is esterified to phosphorylcholine.

Interacting selectively with the SNAP receptor syntaxin-1.

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.