Component of the primary cilium that controls cilium formation and length (PubMed:31712586). May function within retrograde intraflagellar transport (IFT)-associated pathways to remove signaling proteins from primary cilia (PubMed:31712586). Also involved in neuronal vesicle biogenesis and neurotransmitter vesicular function (PubMed:33230203). {ECO:0000269|PubMed:31712586, ECO:0000269|PubMed:33230203}. This is the function of Ensembl gene identifier ENSG00000178965 (ERICH3, glutamate rich 3).