synaptic vesicle exocytosis obsolete synaptic vesicle tethering involved in synaptic vesicle exocytosis https://github.com/geneontology/go-ontology/issues/31871 true biological_process OBSOLETE. The initial, indirect interaction between a synaptic vesicle membrane and a the preseynaptic membrane active zone. This interaction is mediated by tethering factors (or complexes), which interact with both membranes. This process is distinct from and prior to synaptic vesicle priming and fusion. 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:0016079 'synaptic vesicle exocytosis' as appropriate. GO:0099069 vesicle membrane tethering activity