https://www.mysciencework.com/publication/show/identification-sites-phosphorylated-vaccinia-virus-b1r-kinase-viral-protein-h5r-3b629143?search=1
https://www.ncbi.nlm.nih.gov/pmc/?term=Identification+of+sites+phosphorylated+by+the+vaccinia+virus+B1R+kinase+in+viral+protein+H5R