helper virus

[lara]

y r helper viruses so specific??

[victor]

Just refer to the viruses' anti-receptor or virus attachment binding [VAB]which are composed by glycoprotein, glycolipids or phospolipid with each unique 3D structure...

[lara]

what i really wanted 2 know was y r some incomplete viruses specific about the viruses that make up 4 their deficiencies?

[victor]

I'm talking about virus here, so don't relate it with viroids and prions.
Incomplete viruses means viruses that incomplete in having enzymes they need to replicate themselves [e.g. Adenoviridae]. But some viruses have already 'complete' in having those [e.g. Poxviridae, Herpesviridae]. Complete and incomplete only differs in the enzymes [Also, I'm not talking about impotent virus that failed to code their protein and oftenly called 'incomplete'] they need to replicate and activate them...

[lara]

AND I AM TALKING ABOUT HELPER VIRUSES,AND NOT MERE VIRUSES,NOR PRIONS OR VIROIDS!the doubt is this:why can't any virus help out an 'impotent virus'?why are they so selective?do they have any mechanisms like the usual receptor on the host surface?

[victor]

Viruses have some receptors like protein, oligosaccharides, etc...the mecahnisms is just like a molecule (ex, protein) get bound with specific protein receptors....viruses have the 3D shaped antireceptors just like the protein do...simply said, the virus 'hijack' the host's receptor.

Why viruses can't help the impotent one? well, I can said that they're not programmed to do that..