meta user
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| bio | website | |
|---|---|---|
| location | Marseille, France | |
| age | 32 | |
| visits | member for | 9 months |
| seen | 23 hours ago | |
| stats | profile views | 25 |
I am a computational biologist with a background in biology, not computers. My PhD work was on gene prediction and comparative genomics but my current research is in systems biology, specifically protein-protein interaction networks.
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Apr 14 |
reviewed | Approve suggested edit on What is the difference between HPLC and FPLC and why is FPLC preferable for protein purification? |
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Apr 14 |
reviewed | Close How to classify equilibrium points |
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Apr 13 |
revised |
The oldest common ancesstor of all human beings added 1 characters in body; edited title |
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Apr 6 |
comment |
How did this spider evolve to mimic exactly a human face and arms? Argh, phone typing anthropomocentrism = anthropomorphism |
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Apr 6 |
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What's the difference between life expectancy of cigarette smoker and general population? @nico I only used ingest to avoid a third repetition of inhale so I won't push the point :). As for whether they directly affect DNA or start a cascade, I honestly have no idea. The abstract of the paper I linked to seems to claim that both are true: "Cigarette smoke contains two very different populations of free radicals, one in the tar and one in the gas phase. [...] In addition, we have shown that the principal radical in tar reacts with DNA in vitro, possibly by covalent binding". Anyway, my main point was just that whatever you smoke, the act of smoking is harmful. |
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Apr 6 |
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What's the difference between life expectancy of cigarette smoker and general population? @nico, The gas phase of cigarette smoke contains small oxygen- and carbon-centered radicals that are much more reactive than are the tar-phase radicals. and that's just the first random reference I found. Also, although I live in France, English is my native language :). Ingest is quite correct in that context. The Oxford Dictionary Online even uses this phrase as an example of the word's usage: "they ingest oxygen from the air" |
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Apr 5 |
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How did this spider evolve to mimic exactly a human face and arms? @Drosophila Of course it can. But not when that activity affects only the small percentage of crabs that happen to have been fished by superstitious fishermen. The ashes you mention affected the entire population. Anyway, you have to admit that none of the examples mentioned in this thread are that human-like. They might look like faces to us, but a colon and a parenthesis looks like a face to us :). This is most certainly anthropomocentrism. |
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Apr 5 |
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How did this spider evolve to mimic exactly a human face and arms? @Mohammad, I really doubt that the kind of selection that fishermen can provide would be stable enough or even exist over enough time to drive the evolution of such a trait. Even if it were, I find it far more likely that fishermen would chose the crabs that most looked like human faces rather than discard them. |
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Apr 5 |
revised |
Finding proteins in DNA sequence added 6 characters in body |
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Apr 5 |
revised |
Finding proteins in DNA sequence added 6 characters in body |
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Apr 4 |
comment |
What is range of the number of individual organelles in cells This varies enormously between species, between eukaryotes and prokaryotes, plants and animals and within the cells of the same species. Also, what organelles are you interested in? Mitochondria? Chloroplasts? Lysosomes? Golgi? Vacuoles? Proteasomes? The list goes on... Have a look at en.wikipedia.org/wiki/Organelle |
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Apr 3 |
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Are there eukaryotes without introns? Well yeast has very very few if that counts. See here. I recently checked the number if annotated isoforms for 5592 yeast genes and NONE of them had more than one! |
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Apr 2 |
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What percentage of protein isoforms have different functions? Thanks, but I'm interested in whole proteome data. Uniprot has no parseable information on isoforms apart from how many a given protein has and their sequence. Sometimes the function field has some information, sometimes it doesn't. |
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Apr 2 |
asked | What percentage of protein isoforms have different functions? |
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Apr 2 |
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Why Do Nerve Signals Get Crossed? I know, that's why I posted a comment and not an answer. Just thought you might be interested. |
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Apr 1 |
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What is the gas inside a Capsicum pepper, and how does it get there? Nice one for the experiment :). Bear in mind that there are many many processes happening in living thing that can produce gasses. Breathing, photosynthesis, fermentation etc etc. |
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Apr 1 |
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Why Do Nerve Signals Get Crossed? You might be interested in this. And this. |
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Mar 30 |
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How is evolution possible in contemporary humans? @GabrielFair you should read David Brin's Existence it suggests exactly that! |
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Mar 29 |
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What's the difference between life expectancy of cigarette smoker and general population? @JimThio while marijuana actually has some protective effects (as demonstrated in mice, don't have the reference at hand), the basic problem in smoking is the act of smoking itself not what it is that you are inhaling. Whether you smoke weed or tobacco, you are still inhaling carbon monoxide and screwing up your haemoglobin and you are still ingesting free radicals and screwing up your DNA. Sorry (and I truly am, I am a heavy smoker of various substances). |
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Mar 29 |
revised |
If life is discovered on another planet, will it likely be classified using the current domain/kingdom/phylum system? Plant cells have cell walls |
