Structural elements required for the cooperative binding of the herpes simplex virus origin binding protein to oriS reside in the N-terminal part of the protein.
The origin binding protein (OBP) of herpes simplex virus type 1 is required to activate a viral origin of replication in vivo. We have used intact OBP as well as a truncated form of the protein expressed in Escherichia coli to investigate the protein-protein interactions, as well as the protein-DNA interactions involved in the formation of a nucleoprotein complex at a viral origin of replication (oriS) in vitro. The salient findings demonstrate that the N-terminal part of OBP is required for the cooperative binding of OBP to three sites (boxes I, II, and III) within oriS. A detailed model for the interaction of OBP with the viral origins of replication oriS and oriL is presented.
Elias
P
P
Department of Medical Biochemistry, University of Göteborg, Sweden.
Gustafsson
C M
CM
Hammarsten
O
O
Stow
N D
ND
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D001665:Binding Sites; D002417:Cattle; D002850:Chromatography, Gel; D003001:Cloning, Molecular; D004247:DNA / Q000378:metabolism; D004261:DNA Replication; D004279:DNA, Viral / Q000235:genetics / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D003850:Deoxyribonuclease I; D004591:Electrophoresis, Polyacrylamide Gel; D004926:Escherichia coli / Q000235:genetics; D005814:Genes, Viral; D008961:Models, Structural; D008969:Molecular Sequence Data; D009838:Oligodeoxyribonucleotides; D011487:Protein Conformation; D018139:Simplexvirus / Q000235:genetics / Q000378:metabolism*; D014764:Viral Proteins / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*
D004279:DNA, Viral; D004268:DNA-Binding Proteins; D009838:Oligodeoxyribonucleotides; D014764:Viral Proteins; C055789:origin-binding proteins, viral; D004247:DNA; D003850:Deoxyribonuclease I