Binds to and increases the activity of a kinase, an enzyme which catalyzes of the transfer of a phosphate group, usually from ATP, to a substrate molecule.

Increases the activity of a protein tyrosine kinase, an enzyme which phosphorylates a tyrosyl phenolic group on a protein.

Binds to and increases the activity of a transmembrane receptor protein tyrosine kinase.

The function of interacting (directly or indirectly) with receptors such that the proportion of receptors in the active form is increased.

Binds to and increases the activity of a receptor signaling protein tyrosine kinase.

Uptake of cholesterol into the blood by absorption from the small intestine.

Any process in which lipids are taken up from the contents of the intestine.

The directed movement of cholesterol, cholest-5-en-3-beta-ol, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.

Any of a group of peptide cofactors of enzymes for the lysosomal degradation of sphingolipids. They stimulate various enzymes, including glucosylceramidase, galactosylceramidase, cerebroside-sulfatase, alpha-galactosidase, beta-galactosidase, and sphingomyelin phosphodiesterase.

Binds to and stops, prevents or reduces the activity of a protein serine/threonine kinase.

Binds to and stops, prevents or reduces the activity of a protein kinase, an enzyme which phosphorylates a protein.

The deposition of hydroxyapatite, a form of calcium phosphate with the formula Ca10(PO4)6(OH)2, in bone tissue.

Formation of hard tissues that consist mainly of inorganic compounds, and also contain a small amounts of organic matrices that are believed to play important roles in their formation.

Catalysis of the reaction: testosterone + NAD(P)+ = androst-4-ene-3,17-dione + NAD(P)H + H+.

Catalysis of an oxidation-reduction (redox) reaction in which a CH-OH group acts as a hydrogen or electron donor and reduces NAD+ or NADP, and in which one substrate is a sterol derivative.

Combining with estrogen and transmitting the signal within the cell to trigger a change in cell activity or function.

Combining with a steroid hormone and transmitting the signal within the cell to initiate a change in cell activity or function.

The component of the synaptic vesicle membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.

The component of the organelle membrane consisting of the gene products having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.

The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.