UASt sequences regulate expression of the SARS-CoV-2\nsp6 Omicron variant coding sequence. This contains a three amino acid deletion (L-S-G, Δ106-108) and a single amino acid variant (I189V) compared to the ancestral SARS-CoV-2\nsp6 sequence (GB sequence NC_045512, Wuhan-Hu-1 isolate).