May bind host ZYG11B. This would not play any role in SARS-CoV-2 infection. Could be the product of a pseudogene. Probably does not encode a functional protein. No subgenomic RNA was detected that could encode the protein (PubMed:33722935). It has been shown to be non-essential in vivo and in vitro (PubMed:33301543). There are no similar proteins in other betacoronavirus (PubMed:33301543).