Believed to act as a modulator of nicotinic acetylcholine receptors (nAChRs) activity. In vitro potentiates alpha-3:beta-4-containing nAChRs maximum response by increasing peak current and slowing down receptor desensitization; the activity is dependent on its cell surface localization. Interacts with CHRNA4. O-glycosylated. Contains sialic acid residues. LY6G6E is a pseudogene in humans.