Functional relationship between the J proteins of bacteriophages φX174 and G4 during phage morphogenesis

Abstract

The functions of the small DNA-binding protein, gpJ, of bacteriophages φX174 and G4 were examined by in vivo cross-complementation and sucrose gradient sedimentation. The morphogenetic roles of the two proteins may differ. The φX174 J protein may be required for the formation or stabilization of the φX174 prohead.