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location Marseille, France
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Elected moderator on Unix & Linux. Feel free to @ping me in chat if there's anything I can help you with.

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.

profile for terdon on Stack Exchange, a network of free, community-driven Q&A sites


May
13
comment Gene perturbation, what is it used for, explain to computer scientists?
I'm afraid this is really a bit too broad. Perturbation can mean very many things from changing the expression level, to switching genes on or off, to altering the protein produced. The phenotypes will depend both on the particular perturbation applied and on the specific gene perturbed.
May
13
comment Comparing Shine Dalgarno scores, creating a distribution
Please give us the data in text form so we can work with it. It would be relatively simple to produce a histogram using R for example but I'm not about to copy it by hand.
May
13
revised Comparing Shine Dalgarno scores, creating a distribution
In the midst (no s) means among, not int he process of.
May
13
comment Color van der waals bonds in swiss PdbViewer
Use Photoshop? Please clarify, I assume you want to do this using the same program that produced the image, so tell us what you're using!
May
13
comment Why do our eyes close when we sleep?
@speedoheck Because you need to be able to see of course! Take the car out if you like. In sleep, there is no such necessity. Also, we get a lot of visual cues from light and that affects the concentrations of certain hormones. I would guess that is also an important reason why our eyes need to be closed.
May
13
comment Why do our eyes close when we sleep?
@speedoheck 1) blinking requires muscle movement which sort of defeats the purpose of resting 2) closed eyelids offer much better protection than periodic blinking 3) if you can blink, you have eyelids. Why bother flapping the garage door up and down every few seconds when you could just close it and be done with it?
May
11
comment Do miRNA and antisense RNA do essentially the same thing?
@guest you're very welcome. If this answer solves your issue please take a minute and check the check mark under the vote count to the left, this will signify to everyone that your issue's been resolved.
May
11
comment Do miRNA and antisense RNA do essentially the same thing?
No reason not to post! The more the merrier :)
May
11
revised Do miRNA and antisense RNA do essentially the same thing?
deleted 1 character in body
May
11
comment Do miRNA and antisense RNA do essentially the same thing?
Strictly speaking, it does not need to be complementary to mRNA. It can be complementary to any RNA moiety.
May
11
answered Do miRNA and antisense RNA do essentially the same thing?
May
11
comment chimeric sequences
Yes, but you're contradicting yourself. Some chimeric sequences are very real and exist in vivo. Others are artifacts, mistakes introduced by the sequencing process. Which ones are you asking about?
May
11
revised What is the difference between orthologs, paralogs and homologs?
edited body
May
10
comment Is there a possibility that medicine will affect the efficiency of natural selection?
You might be interested in this Q&A: How is evolution possible in contemporary humans?
May
10
comment Is there a possibility that medicine will affect the efficiency of natural selection?
"Humans aren't under a lot of selective pressure on a large scale right now." : That is completely wrong. Of course we're under selection! We live in a specific ecosystem and changes to that system affect our survival. We are under strong selective pressure to be animals that can survive a specific range of temperature, acidity and oxygen concentrations to name just a few. Anyway, the main driver of selection is always the way that mates are chosen and that is still going strong today. Not everyone in a generation reproduces => selection. Disease is a relatively minor player in this.
May
9
revised Evolution and the levels of selection
deleted 1 character in body
May
8
comment What does chromosome CHR_Un, CHR_MT in the ftp site of NCBI mean?
@dexterdev I did not answer this, Chris did. I just edited which is why you see my name there. I don't know what Chris meant by that since I can't find that file on the FTP site nor see it mentioned in the FTP's README (which, by the way, you should read).
May
7
revised What does chromosome CHR_Un, CHR_MT in the ftp site of NCBI mean?
Made the formatting homogeneous.
May
6
comment translation of scientific names
This question appears to be off-topic because it is about nomenclature and the meanings of words in dead languages, not biology.
May
6
comment translation of scientific names
All you need to do is use a Latin/English and/or Greek/English dictionary. This is not really related to biology but linguistics.