Nucleic Acids Research, 1984, Vol. 12, No. 4 2061-2079
© 1984
MOLECULAR BIOLOGY |
Replication origins and a sequence involved in coordinate induction of the immedlate-early gene family are conserved in an intergenic region of herpes simplex virus
Institute of Virology, University of Glasgow Church Street, Glasgow G11 5JR, UK
*To whom correspondence should be addressed
Received January 5, 1984. Accepted January 31, 1984.
We have determined the structure of the 5' portion of herpes simplex virus type 2 (HSV-2) immediate-early (IE) mRNA-3 and have obtained the DNA sequence specifying the N terminus of its encoded polypeptide, Vmw182, its untranslated leader and the intergenic region between IEmRNAs-3 & -4/5. Comparison of the HSV-2 intergenic sequences with the HSV-1 equivalent region identifies several conserved regions: (1) an AT-rich element with core consensus TAATGARAT which is likely to be the activator sequence through which coordinate induction of the IE gene family is mediated. (2) GC-rich and GA-rich tracts, found in a wide variety of eukaryotic promoters, which vary in position and orientation between HSV-2 and HSV-l and which represent modulators of transcription. (3) TATA homologies present 1525 base pairs (bp) upstream of mRNA 5' termini. (4) a l37bp direct repeat in HSV-2 which contains sequence almost identical to the HSV-l replication origin.
+ Present address: Scripps Clinic and Research Foundation, 10666 North Torrey Pines Road, La Jolla, CA 92037, USA
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