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. 1978 Jan;25(1):124-8.
doi: 10.1128/JVI.25.1.124-128.1978.

Effect of cordycepin triphosphate on in vitro RNA synthesis by picornavirus polymerase complexes

D L Panicali, C N Nair

Effect of cordycepin triphosphate on in vitro RNA synthesis by picornavirus polymerase complexes

D L Panicali et al. J Virol. 1978 Jan.

Abstract

Cordycepin triphosphate inhibited in vitro [3H]GMP incorporation by pricornavirus-specific polymerase complexes isolated from infected HeLa cells. The inhibition of [3H]GMP incorporation could be reversed with ATP added to the reaction mixture along with the inhibitor, but not with GTP so added or with ATP added 10 min after the inhibitor. Products synthesized in vitro in the presence of cordycepin triphosphate lacked full-length single-stranded viral RNA. These results support RNA chain termination by specific competition with ATP as the mechanism of inhibition of picornavirus-specific RNA synthesis by cordycepin triphosphate.

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