What initiates transcription in Viruses?

[toothfairy05]

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I tried googling this but I couldn't find I clear answer.

 

[newmexomfs]

availability of RNA polymerases and transcription ingredients from host cell prolly does that.

 

[rnbaxter]

Thats a kind of broad question since there are so many different versions of viruses.

I think you are looking for an answer that involves a retrovirus or RNA virus that produces a cDNA and incorporates its genome into the host genome. Therefore, entering a lysogenic cycle.

What initiates the transcription? Simply a disturbance in the host cell. A chemical potentially. Potentially a signal letting the virus know that the host is getting old and about to die.

Anyways a specific answer, like a specific signal that binds to a cell receptor, would be to indepth for a test like the DAT to expect a test taker to know. Especially since dental schools don't require a virology class.

 

[Bio Dental Mom]

I think maybe also you can think of it, like what causes a virus to get out of the lysogenic phase to the lytic phase? Things that do this are chemicals, UV, and stress? Not sure, but that's what first came to mind.

 

[toothfairy05]

Ok thanks everyone, for your input on this one. I'll let you know if I come up with an answer🙂

 

[xdreammba]

To my understanding is that Viruses transcribes according to the type of single or double stranded DNA/RNA they have. Most uses bacterial RNA polymerase, although some do have their own RNA pol incorporated or even haults the gene of the bacteria to make their own RNA pol once they are inside of the bacteria.

I might be wrong... so just keep an open mind on this one..