nicotinic acetylcholine-activated cation-selective channel activity

RNA splicing factor activity, transesterification mechanism

An activity which binds RNA and functions to assist splicing of substrate RNA(s) by facilitating the formation and stabilization of a catalytic conformation in which the splice junctions of the RNA(s) to be spliced are positioned for a transesterification reaction that occurs between two sites within the RNA(s) to be spliced.

Mediates the transfer of a signal from the outside to the inside of a cell by means other than the introduction of the signal molecule itself into the cell.

Combining with an extracellular or intracellular messenger to initiate a change in cell activity.

The mediation of the endocytosis of plasma glycoproteins from which the terminal sialic acid residue on their complex carbohydrate moieties has been removed; recognizes the terminal galactose and N-acetylgalactosamine units; the complex of receptor and ligand is internalized and transported to a sorting organelle where disassociation occurs, the receptor being recycled to the cell membrane.

The secretion of milk by the mammary gland.

Combining with any component or product of the complement cascade to initiate a change in cell activity.

The sequential process by which the multiple coagulation factors of the blood interact, ultimately resulting in the formation of an insoluble fibrin clot; it may be divided into three stages: stage 1, the formation of intrinsic and extrinsic prothrombin converting principle; stage 2, the formation of thrombin; stage 3, the formation of stable fibrin polymers.

complement component C3a receptor activity

Combining with the C3a product of the complement cascade to initiate a change in cell activity.

complement component C3b receptor activity

Combining with the C3b product of the complement cascade to initiate a change in cell activity.

The chemical reactions involving glycoproteins, any protein that contains covalently bound glycose (i.e. monosaccharide) residues other than as a moiety of nucleic acid; the glycose occurs most commonly as oligosaccharide or fairly small polysaccharide but occasionally as monosaccharide.