Genetic analysis of structural proteins in the adsorption apparatus of bacteriophage epsilon 15

Figure 3 Schematic model for protein positions and interactions within the adsorption apparatus of bacteriophage Epsilon 15. The estimates of 12 and 6 copies for gp15 and gp17, respectively, are based upon stoichiometric measurements made relative to the numbers of capsid and tail spike proteins present in epsilon 15[13]; tail spike attachment to portal protein may be further stabilized by interactions with gp15 and/or capsid proteins.