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Annotation rule MF_04007
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General rule information [?]

Accession MF_04007
Dates 18-FEB-2016 (Created)
20-NOV-2019 (Last updated, Version 4)
Name HSV_DNBI
Scope
Viruses; Herpesviridae
Templates P04296 (DNBI_HHV11); P36384 (DNBI_HHV2): [Recover all]

Propagated annotation [?]


Identifier, protein and gene names [?]

Identifier
DNBI
Protein name
RecName: Full=Major DNA-binding protein;
Gene name
DBP

Comments [?]

Function Plays several crucial roles in viral infection. Participates in the opening of the viral DNA origin to initiate replication by interacting with the origin-binding protein. May disrupt loops, hairpins and other secondary structures present on ssDNA to reduce and eliminate pausing of viral DNA polymerase at specific sites during elongation. Promotes viral DNA recombination by performing strand-transfer, characterized by the ability to transfer a DNA strand from a linear duplex to a complementary single-stranded DNA circle. Can also catalyze the renaturation of complementary single strands. Additionally, reorganizes the host cell nucleus, leading to the formation of prereplicative sites and replication compartments. This process is driven by the protein which can form double-helical filaments in the absence of DNA.
Subunit Homooligomers. Forms double-helical filaments necessary for the formation of replication compartments within the host nucleus. Interacts with the origin-binding protein. Interacts with the helicase primase complex; this interaction stimulates primer synthesis activity of the helicase-primase complex. Interacts with the DNA polymerase. Interacts with the alkaline exonuclease; this interaction increases its nuclease processivity.
Subcellular location Host nucleus. Note=In the absence of DNA replication, found in the nuclear framework-associated structures (prereplicative sites). As viral DNA replication proceeds, it migrates to globular intranuclear structures (replication compartments).
Similarity Belongs to the herpesviridae major DNA-binding protein family.

Keywords [?]

case <FTTag:Zn>
end case

Gene Ontology [?]

case <FTTag:Zn>
GO:0046872; Molecular function: metal ion binding.
end case
GO:0042025; Cellular component: host cell nucleus.
GO:0003697; Molecular function: single-stranded DNA binding.
GO:0006260; Biological process: DNA replication.
GO:0039686; Biological process: bidirectional double-stranded viral DNA replication.

Cross-references [?]

Pfam PF00747; Viral_DNA_bp; 1;

Features [?]

From: DNBI_HHV11 (P04296)
Key     From     To       Description   Tag   Condition   FTGroup
ZN_FING     499     512           Zn   C-x-x-C-x-x-x-x-x-x-x-C-x-H  
MOTIF     843     844       Required for filament formation     F-W  
MOTIF     1142     1144       Required for filament formation     F-N-F  
REGION     1170     Cter       Required for nuclear localization        

Additional information [?]

Size range 1127-1209 amino acids
Related rules None
Fusion None