 The SARS-CoV-2 virus has been found to have a 24 nucleotide deletion in its S protein gene, which could lead to changes in the virus's ability to enter host cells. This deletion could also affect the virus's ability to spread between hosts, as it removes a key cleavage site on the S protein. Additionally, the virus's protome and phosphoproteome were analyzed, revealing more than 500 viral peptides and 44 phosphopeptides. These findings suggest that the virus can easily mutate and adapt to new environments, making it difficult to predict how the virus will behave in different settings. This article was authored by Andrew D. Davidson, Maya Kavanaugh-Williamson, Sebastian Lewis, and others.