Target intelligence / Profile preview

Hepatitis B Virus Reverse Transcriptase (HBV RT)

Target
HBV RT
Molecular classification
Enzyme, Reverse Transcriptase
01

Overview

Hepatitis B virus (HBV) reverse transcriptase, also known as the viral polymerase or P protein, is a multifunctional enzyme essential for HBV replication. It catalyzes the reverse transcription of pregenomic RNA (pgRNA) into relaxed circular DNA (rcDNA), a unique process among DNA viruses and central to the HBV life cycle. It possesses RNA-dependent DNA polymerization, DNA-dependent DNA polymerization, RNase H activity, and protein priming functions. It is a major target for antiviral drugs used to treat chronic hepatitis B.

Other names
HBV PolymeraseP proteinPol
02

Mechanism of action

Inhibition of viral DNA strand elongation by nucleos(t)ide analogs.

03

Biological functions

Reverse transcriptionRNA-dependent DNA polymerizationDNA-dependent DNA polymerizationRNase H activityProtein priming
04

Disease associations

InfectionHepatitis BChronic Hepatitis B
05

Safety considerations

Drug resistance mutationsLong-term toxicity
06

Interacting drugs

Nucleos(t)ide analogs (e.g., Tenofovir, Entecavir)

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