Vl. Katanaev et al., VIRAL Q-BETA RNA AS A HIGH EXPRESSION VECTOR FOR MESSENGER-RNA TRANSLATION IN A CELL-FREE SYSTEM, FEBS letters, 359(1), 1995, pp. 89-92
Dihydrofolate reductase (DHFR) mRNA was inserted into Q beta phage RNA
instead of its coat protein cistron. Translation of this recombinant
mRNA in the Escherichia coli cell-free system resulted in the synthesi
s of DHFR, which was two orders of magnitude higher than that in the c
ase of translation of the control DHFR mRNA. Additionally, it resulted
in a significantly enhanced synthesis of Q beta replicase as compared
with its synthesis when the original Q beta RNA was used.