The function of Ensembl gene identifier ENSG00000166405 (RIC3, RIC3 acetylcholine receptor chaperone) is as follows. Molecular chaperone which facilitates proper subunit assembly and surface trafficking of alpha-7 (CHRNA7) and alpha-8 (CHRNA8) nicotinic acetylcholine receptors (PubMed:12821669, PubMed:15504725, PubMed:16120769, PubMed:18691158, PubMed:32204458). May also promote functional expression of homomeric serotoninergic 5-HT3 receptors, and of heteromeric acetylcholine receptors alpha-3/beta-2, alpha-3/beta-4, alpha-4/beta-2 and alpha-4/beta-4. {ECO:0000269|PubMed:12821669, ECO:0000269|PubMed:15504725, ECO:0000269|PubMed:15809299, ECO:0000269|PubMed:15927954, ECO:0000269|PubMed:16120769, ECO:0000269|PubMed:17609200, ECO:0000269|PubMed:18691158, ECO:0000269|PubMed:32204458}.