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Phylogenetic trees

Scott Coutts SPAMFILTER-scott.coutts at med.monash.edu.au
Wed Nov 17 18:48:21 EST 2004


Trond Erik Vee Aune wrote:

> Hi,
> 
> It's there a web-site or software that can quickly draw a phylogentic 
> tree when the input is any chosen organism. For instance, if I would 
> like to know the evolutionary link between Helicobacter pylori, 
> Pseudobacillus alvei and Escherichia coli, I'd just need to write in 
> these names and the sofware would then draw a phylogentic tree showing 
> the evolutionary distances between them.
> 
> Kind regards,
> Trond Erik Vee Aune
> 

You could try the ribosomal database project. Do a google search and 
you'll find it. It contains every ribosomal sequence in the databases, 
and it draws trees on the fly with any species you choose from the list. 
There's a lot in there, so it can take a while to do it's thing sometimes (:

Otherwise, you can do it yourself by downloading the 16S sequence(s) 
from species and strains that you're interested in, and doing a multiple 
alignment, then generating a tree from that. You can get the sequences 
from genbank, do the alignment with clustalw or clustalx (either 
download it or use a web-based version), then use treeview to calculate 
and draw trees from it.

Good luck!

Scott.



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