Figure 2From: Identification of sites phosphorylated by the vaccinia virus B1R kinase in viral protein H5RSequence analysis of H5R phosphopeptide. Fraction 29 from Fig 1c was subjected to automatic Edman degradation, and the 32P radioactivity released at each stage measured. The identity of the phenylthiohydantoin derivative from the first seven cycles was unequivocal and is indicated.Back to article page