EOG84F8RJ	GO:0007165	24/88	signal transduction	biological_process	"The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell." [GOC:go_curators, GOC:mtg_signaling_feb11]
EOG84F8RJ	GO:0005578	24/88	proteinaceous extracellular matrix	cellular_component	"A layer consisting mainly of proteins (especially collagen) and glycosaminoglycans (mostly as proteoglycans) that forms a sheet underlying or overlying cells such as endothelial and epithelial cells. The proteins are secreted by cells in the vicinity. An example of this component is found in Mus musculus." [GOC:mtg_sensu, ISBN:0198547684]
EOG84F8RJ	GO:0005509	24/88	calcium ion binding	molecular_function	"Interacting selectively and non-covalently with calcium ions (Ca2+)." [GOC:ai]