Component of the exocyst complex involved in the docking of exocytic vesicles with fusion sites on the plasma membrane. (Microbial infection) Has an antiviral effect against flaviviruses by affecting viral RNA transcription and translation through the sequestration of elongation factor 1-alpha (EEF1A1). This results in decreased viral RNA synthesis and decreased viral protein translation. . This is the function of Ensembl gene identifier ENSG00000090989 (EXOC1, exocyst complex component 1).