Vaccinia virus transcription.
Vaccinia virus replication takes place in the cytoplasm of the host cell. The nearly 200 kbp genome owes part of its complexity to encoding most of the proteins involved in genome and mRNA synthesis. The multisubunit vaccinia virus RNA polymerase requires a separate set of virus-encoded proteins for the transcription of the early, intermediate and late classes of genes. Cell fractionation studies have provided evidence for a role for host cell proteins in the initiation and termination of vaccinia virus intermediate and late gene transcription. Vaccinia virus resembles nuclear DNA viruses in the integration of viral and host proteins for viral mRNA synthesis, yet is markedly less reliant on host proteins than its nuclear counterparts.
Broyles
Steven S
SS
Department of Biochemistry, Purdue University, West Lafayette, IN 47907-1153, USA.
D012321:DNA-Directed RNA Polymerases / Q000235:genetics; D005786:Gene Expression Regulation; D014157:Transcription Factors; D014158:Transcription, Genetic; D014616:Vaccinia virus / Q000235:genetics*; D014764:Viral Proteins / Q000235:genetics
D014157:Transcription Factors; D014764:Viral Proteins; D012321:DNA-Directed RNA Polymerases