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. 1987 Jan;61(1):125–133. doi: 10.1128/jvi.61.1.125-133.1987

Sequence and transcription analysis of the human cytomegalovirus DNA polymerase gene.

T Kouzarides, A T Bankier, S C Satchwell, K Weston, P Tomlinson, B G Barrell
PMCID: PMC255219  PMID: 3023690

Abstract

DNA sequence analysis has revealed that the gene coding for the human cytomegalovirus (HCMV) DNA polymerase is present within the long unique region of the virus genome. Identification is based on extensive amino acid homology between the predicted HCMV open reading frame HFLF2 and the DNA polymerase of herpes simplex virus type 1. We present here a 5280-base-pair DNA sequence containing the HCMV pol gene, along with the analysis of transcripts encoded within this region. Since HCMV pol also shows homology to the predicted Epstein-Barr virus pol, we were able to analyze the extent of homology between the DNA polymerases of three distantly related herpesviruses, HCMV, Epstein-Barr virus, and herpes simplex virus. The comparison shows that these DNA polymerases exhibit considerable amino acid homology and highlights a number of highly conserved regions; two such regions show homology to sequences within the adenovirus type 2 DNA polymerase. The HCMV pol gene is flanked by open reading frames with homology to those of other herpesviruses; upstream, there is a reading frame homologous to the glycoprotein B gene of herpes simplex virus type 1 and Epstein-Barr virus, and downstream there is a reading frame homologous to BFLF2 of Epstein-Barr virus.

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Selected References

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