OBSOLETE. A class of proteins that interact with the ephrin receptors.

OBSOLETE. (Was not defined before being made obsolete).

OBSOLETE. (Was not defined before being made obsolete).

Binding to a frizzled (fz) receptor.

A series of processes that forms an integrated mechanism by which a cell or an organism detects the depletion of primary nitrogen source, usually ammonia, and then activates genes to scavenge the last traces of the primary nitrogen source and to transport and metabolize alternative nitrogen sources. The utilization process begins when the cell or organism detects nitrogen levels, includes the activation of genes whose products detect, transport or metabolize nitrogen-containing substances, and ends when nitrogen is incorporated into the cell or organism's metabolism.

Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus reflecting the presence, absence, or concentration of nutrients.

The chemical reactions and pathways resulting in the breakdown of pentacyclic triterpenoid compounds, terpenoids with six isoprene units and 5 carbon rings.

The chemical reactions and pathways resulting in the breakdown of triterpenoid compounds, terpenoids with six isoprene units.

The chemical reactions and pathways involving pentacyclic triterpenoid compounds, terpenoids with six isoprene units and 5 carbon rings.

The chemical reactions and pathways resulting in the breakdown of organic cyclic compound.

The chemical reactions and pathways involving triterpenoid compounds, terpenoids with six isoprene units.

The chemical reactions and pathways involving organic cyclic compound.

The chemical reactions and pathways resulting in the breakdown of hopanoids, pentacyclic sterol-like compounds based on the hopane nucleus.

The chemical reactions and pathways involving hopanoids, pentacyclic sterol-like compounds based on the hopane nucleus.

The chemical reactions and pathways resulting in the formation of pentacyclic triterpenoid compounds, terpenoids with six isoprene units and 5 carbon rings.

The chemical reactions and pathways resulting in the formation of triterpenoid compounds, terpenoids with six isoprene units.

The chemical reactions and pathways resulting in the formation of organic cyclic compound.

The chemical reactions and pathways resulting in the formation of hopanoids, pentacyclic sterol-like compounds based on the hopane nucleus.

Any process that modulates the frequency, rate or extent of the chemical reactions and pathways involving isoprenoids.

Any process that modulates the frequency, rate or extent of the chemical reactions and pathways by which individual cells transform chemical substances.