A. General Introduction to bacteriophage SPO1.
B. GP44, gp50, and gp51 regulate the shutoff of host biosyntheses indirectly, by regulating expression of the genes of the host-takeover module.
C. GP40 plays a direct role in shutoff of both host DNA and RNA synthesis, and gp38 and gp39 regulate both shutoffs, by direct participation in the shutoff processes.
D. GP56 (possibly assisted by gp57 and gp58) inhibits host cell division.
E. GP55-53 may inhibit host protein synthesis.
F. Antibiotic Activities of SPO1 Proteins.