exocytosis obsolete vesicle tethering involved in exocytosis https://github.com/geneontology/go-ontology/issues/31872 true tb 2013-01-08T15:07:50Z biological_process GO:0090522 This term was obsoleted because it represents a molecular function (vesicle membrane tethering activity) rather than a biological process, and is pre-composed; the same information is better represented as a GO-CAM model. Annotations should be reviewed and reannotated to the new MF term GO:7770062 'vesicle membrane tethering activity', combined with GO:0006887 'exocytosis' or a descendant as appropriate. OBSOLETE. The initial, indirect interaction between a secretory vesicle membrane and a site of exocytosis in the plasma membrane. This interaction is mediated by tethering factors (or complexes), which interact with both membranes. Interaction can occur via direct binding to membrane phospholipids or membrane proteins, or via binding to vesicle coat proteins. This process is distinct from and prior to docking and fusion. vesicle membrane tethering activity