Abstract

During capsid assembly of bacteriophage P2 and its satellite phage P4, gpN undergoes proteolytic cleavage with the removal of the first 31 amino acids. The truncated protein gpN* is unable to support formation of viable phages in complementation tests. A c-myc antigenic epitope (EQKLISEEDL) exchanged for eleven amino acids in the amino terminal part of gpN results in both proteolytic processing of gpN::c-myc as well as assembly of P2 and P4 procapsid-like structures, but gpN::c-myc failed, like N*, to support the production of infectious P2 and P4 particles.

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