How does an RNA virus get a viral DNA into a host cells genome?

Answer 1

RNA viruses generally have very high mutation rates as they lack DNA polymerases which can find and fix mistakes, and are therefore unable to conduct DNA repair of damaged genetic material. Retroviruses integrate a DNA intermediate of their RNA genome into the host genome, and therefore have a higher chance of correcting any mistakes in their genome thanks to the action of proof-reading DNA polymerases belonging to the host cell. Also, retroviruses, unlike other single-stranded RNA viruses they use DNA intermediates to replicate. Reverse transcriptase, a viral enzyme that comes from the virus itself after it is uncoated, converts the viral RNA into a complementary strand of DNA, which is copied to produce a double stranded molecule of viral DNA. This DNA goes on to direct the formation of new virions.

Answer 2

by use of the enzyme "reverse transcriptase" which makes double stranded DNA chains from single stranded RNA. It is also known as RNA-dependant- DNA polymerase, as DNA polymerase is the enzyme which catalyses the synthesis of a protein strand. by use of the enzyme "reverse transcriptase" which makes double stranded DNA chains from single stranded RNA. It is also known as RNA-dependant- DNA polymerase, as DNA polymerase is the enzyme which catalyses the synthesis of a DNA strand. (sorry typo) second paragraph is correct

Answer 3

An RNA virus requires the enzyme Reverse Transcriptase to convert its genome into DNA. The viral genome encodes for a protein called Integrase that carries out integration of viral DNA into the host DNA.

Read more: How_does_a_RNA_virus_get_viral_DNA_into_a_host_cells_genome

Answer 4

An RNA virus requires the enzyme Reverse Transcriptase to convert its genome into DNA. The viral genome encodes for a protein called Integrase that carries out integration of viral DNA into the host DNA.

Read more: How_does_a_RNA_virus_get_viral_DNA_into_a_host_cells_genome

Answer 5

An RNA virus requires the enzyme Reverse Transcriptase to convert its genome into DNA. The viral genome encodes for a protein called Integrase that carries out integration of viral DNA into the host DNA.

Answer 6

RNA virus do posses an enzyme called, "reverse transcriptase" that enable the synthesis of DNA from RNA template. Hence the DNA form of the RNA virus has been made by those enzymes will ultimately integrate into the host genome for its successful infection!

Answer 7

The retroviruses are enveloped viruses that have two complete copies of sRNA. They also contain the enzyme reverse transcriptase, which uses the viral RNA to form a complementary strand of DNA, which is then replicated to form a dsDNA.
This reaction is exactly the reverse of the typical transcription step (DNA -> RNA) in protein synthesis. This why they are called retroviruses.

For virus replication to continue, the newly formed DNA must be transcribed into viral RNA that will function as mRNA for viral protein synthesis and be incorporated into new virions.

To do so, the DNA must first migrate to the host cell nucleus and become incorporated into chromosomes of host cells. Such integrated viral DNA is known as a provirus.

Answer 8

An RNA virus uses reverse transcriptase to convert its RNA genome into DNA. This viral DNA can integrate into the host cell's genome by taking advantage of cellular machinery involved in DNA repair and replication. Once integrated, the viral DNA can be transcribed and translated by the host cell, allowing the virus to hijack the host's resources for replication.