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J Virol. 1973 June; 11(6): 886-892
Copyright © 1973 American Society for Microbiology. All Rights Reserved.

RNA Synthesis in Cells Infected with Herpes Simplex Virus VII. Control of Transcription and of Transcript Abundancies of Unique and Common Sequences of Herpes Simplex Virus 1 and 2

Department of Microbiology, The University of Chicago, Chicago, Illinois 60637

ABSTRACT

Analysis of the kinetics of hybridization in liquid of labeled herpes simplex virus (HSV) 1 and 2 DNAs with excess unlabeled RNA extracted at 2 (early) and 8 (late) h postinfection revealed the following. (i) The RNA transcripts present in the HSV-1-infected cells at 2 and 8 h postinfection are complementary to 44 and 48% of HSV-1 DNA. The RNA transcripts present in the HSV-2-infected cells at 2 and 8 h postinfection are complementary to 21 and 50% of HSV-2 DNA. (ii) The transcripts present in 2-h HSV-1- or HSV-2-infected cells treated with cycloheximide are complementary to 44 and 45% of the respective DNAs. (iii) The RNA transcripts present in the HSV-1-infected cells at 2 h postinfection and in HSV-2-infected cells at 8 h postinfection form 2 classes, abundant and scarce, differing in molar concentrations. The RNA transcripts present in the HSV-2-infected cells at 2 h postinfection form only one abundance class. (iv) The transcripts present in the HSV-1-infected cells at 8 h postinfection are complementary to 24% of HSV-2 DNA and therefore 50% of the transcribed HSV-1 sequences are shared by the two viruses. Of the RNA sequences complementary to HSV-2 DNA, 13% arise from HSV-1 templates specifying abundant RNA and 11% arise from HSV-1 templates specifying scarce RNA. Thus, the DNA sequences shared in common by HSV-1 and HSV-2 DNAs constitute 71% of the HSV-1 templates specifying abundant RNA and 39% of sequences specifying scarce RNA.

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