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The Hepatitis B virus (HBV) polymerase is a multifunctional enzyme, with both RNA-dependent and DNA-dependent polymerase functions, as well as an RNase H function. It acts on the HBV pre-genomic RNA (pgRNA) to reverse transcribe it to form a new rcDNA molecule within a new capsid.
Hepatitis B virus (HBV) is a partially double-stranded DNA virus, [1] a species of the genus Orthohepadnavirus and a member of the Hepadnaviridae family of viruses. [ 2 ] [ 3 ] This virus causes the disease hepatitis B .
Transmission of hepatitis B virus results from exposure to infectious blood or body fluids containing blood. HBV is 50 to 100 times more infectious than human immunodeficiency virus (HIV) . [ 32 ] HBV can be transmitted through several routes of infection.
HBeAg is a hepatitis B viral protein, produced by the HBcAg reading frame. It is an indicator of active viral replication ; this means the person infected with Hepatitis B can likely transmit the virus on to another person (i.e. the person is infectious).
The genome organisation of HBV; the genes overlap. ORF S, in green, encodes HBsAg. HBsAg under a transmission electron microscope: the protein self assembles into virus-like particles. HBsAg (also known as the Australia antigen) is the surface antigen of the hepatitis B virus (HBV). Its presence in blood indicates existing hepatitis B infection.
The mutations are changes in DNA bases from guanine to adenine at base position 1896 (G1896A), and from cytosine to thymine at position 1858 (C1858T) in the precore region of the viral genome. [4] The HBV has four genes: S, P, C, and X. The S gene codes for the "major" envelope protein (HBsAg). The largest gene is P. It codes for DNA polymerase ...
CccDNA is associated with the hepatitis B virus (HBV), where the virus constructs its plasmid through covalently linking its bonds. The histone-containing region of the nucleus within the virus is where cccDNA is commonly found, usually interacting with the histones similar to that of chromatin .
The genome organisation of HBV. Some genes overlap. (ORF Core, at bottom left, encodes HBcAg. HBcAg (core antigen) is a hepatitis B viral protein. [1] [2] It is an indicator of active viral replication; this means the person infected with Hepatitis B can likely transmit the virus on to another person (i.e. the person is infectious).
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