25 votes

Can simultaneous double pathogen infections happen, or are they prevented?

You can absolutely have two infections occurring together. One term which is used is 'co-infection'. Also 'secondary infection', in case where either the first infection or the treatment made it more ...
Laura's user avatar
  • 372
10 votes
Accepted

Can genetic recombination occur between DNA viruses?

Summary Certainly DNA viruses do recombine — some of them encode proteins specifically for this purpose. And this is unsurprising if one reflects on the fact that recombination is a fundamental ...
David's user avatar
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9 votes
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Who demonstrated that phage lamba is integrated into the host chromosome?

Allan McCulloch Campbell (1929–2018) In brief, Campbell was responsible for the hypothesis that lysogenic phages physically integrate into the DNA of host bacteria (rather than being laterally ‘...
David's user avatar
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6 votes

Can simultaneous double pathogen infections happen, or are they prevented?

There are viruses that require coinfection. The Hepatitis D virus is incomplete and can only reproduce in a host who is also infected with Hepatitis B.
Loren Pechtel's user avatar
4 votes
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If Viruses use Host Proteins, why don't Immune Cells attack Host Cells?

The phrase “viruses do not code for many of their own viral proteins” in this Wikipedia entry is an obvious oxymoron. I echo what someone else said: “The beauty of Wikipedia is not that it is correct, ...
David's user avatar
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3 votes
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Triangulation Number of Icosahedral Capsids: Formula Variable Definitions

I'm not familiar with the $T = f^2 * P$ formulation. In Caspar + Klug (1962) $T$ itself is equal to $h^2+h*k+k^2$, so I guess $f$ is assumed to always =1. So I don't really know the answer to your ...
timeskull's user avatar
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2 votes

Is it rare for a virus to be similar to its host?

Phage similarity to host Briefly, yes. Generally speaking phage have relatively similar compositional features (e.g. k-mer frequency, see linked paper) and also direct homology (large regions of ...
Maximilian Press's user avatar
2 votes

If Viruses use Host Proteins, why don't Immune Cells attack Host Cells?

The short answer is that what is attacked is usually what is recognized as foreign (other than exceptions as in autoimmune disorders). As any epitopes that belong to the host are usually protected ...
Prashant Bharadwaj's user avatar
2 votes

Basis of the taxonomic classification of viruses

I think you will find that you are entirely incorrect in your statement that we classify "higher" organisms by genotype. Yes, that may be a part of it, but until the advent of high-...
bob1's user avatar
  • 12k
1 vote
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How did the Zinder-Lederberg experiment on Transduction work?

There certainly are detailed explanations of the experiments. For this answer I'm using a 2016 retrospective in J. Bacteriology, the same journal that published the original paper. However those ...
timeskull's user avatar
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1 vote

Protein half-life regulating gene expression

Many processes are mediated by (usually active or catalyzed) degradation of proteins. For example, cyclin proteins are degraded by the ubiquitin pathway as part of the cell cycle, allowing the cell ...
Maximilian Press's user avatar

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