Table 1.

Comparison of properties of the orthomyxovirid PB1 proteins

VirusLength (amino acids)Molecular massa (kDa)Charge at neutral pHapIa
FluAb 75786.6+2310.1
FluBb 75284.3+108.4
FluCb 75486.0+128.8
DHOb 71681.3−106.2
THOb 71081.3+17.7
  • a Values calculated using the University of Wisconsin Genetics Computer Group program Pepstats.

  • b Data taken from Leahy et al. (17). Abbreviations are as defined in the legend for Fig. 1.