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Viral Helicase-Primase Complex
- Molecular classification
- Enzyme, Helicase, Primase, Multi-protein complex
01
Overview
The viral helicase-primase complex is a multi-protein enzyme assembly essential for the replication of herpesvirus genomes. It performs two critical functions at the replication fork: unwinding double-stranded DNA (helicase activity) and synthesizing short RNA primers required to initiate DNA synthesis. This complex is a validated antiviral drug target, especially in cases where resistance to traditional polymerase inhibitors has emerged.
- Other names
- Herpesvirus helicase-primase complexHSV-1 helicase-primase complexHCMV helicase-primase complexUL5-UL52-UL8 complex (HSV-1)pUL105-pUL70-pUL102 complex (HCMV)
02
Mechanism of action
Inhibition of helicase or primase activity, thereby blocking viral DNA replication.
03
Biological functions
DNA unwindingRNA primer synthesisViral genome replicationReplication fork progression
04
Disease associations
InfectionHerpes simplex virus infectionsHuman cytomegalovirus infections
05
Safety considerations
Potential for drug resistance developmentOff-target effects due to similarities with host helicases/primases (though viral specificity is generally high)
06
Interacting drugs
Pritelivir
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