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Jenna M. Lang edited Building a 16S rDNA Phylogenetic Tree.md
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$ perl /Users/microBEnet/Desktop/RDPcleanup.pl -i /Users/microBEnet/Desktop/newTatumella.fa -o TatumellaRAST_RDP.fa
##Building the Tree with FastTree
Go to http://www.microbesonline.org/fasttree/#Install
and download the FastTree.c program by right clicking on it and saving the
link link. Move the FastTree.c file to your Applications folder. To compile the software, navigate to your Applications folder in a Terminal window
FastTree requires a gcc compiler to function? Which you can download and install from xcode here
https://developer.apple.com/downloads/index.action?q=xcode cd /Applications
Then, type:
In order to download xcode you will need to register as a developer with Apple which takes only a couple minutes. gcc -O3 -finline-functions -funroll-loops -Wall -o FastTree FastTree.c -lm
After downloading xcode follow FastTree requires a gcc compiler. If your
computer’s instructions attempt to
install it. Once it compile FastTree fails, this is
installed open the program and open preferences (under the xcode tab). Click on the
downloads option most likely reason. You can download and install the
command line tools. gcc compiler from Xcode here https://developer.apple.com/downloads/index.action?q=xcode
Once In order to download Xcode you
have successfully downloaded will need to register as a developer with Apple which takes only a couple minutes. After downloading Xcode follow your computer’s prompts to install it. Once it is installed, open the program and
installed xcode, open
preferences (under the Xcode tab). Click on the
terminal, navigate to your downloads
file (or wherever you are storing FastTree) and copy option and
paste install the
following syntax command line tools.
$ gcc -O3 -finline-functions -funroll-loops -Wall -o FastTree FastTree.c -lm Once you have successfully downloaded and installed Xcode, return to your Applications folder in your Terminal window and type:
To run FastTree, type the following in the terminal
$ FastTree -gtr -nt
alignment.file your_alignment_file >
tree_file tree_file.tre
For Example
$ /Users/Madison/Downloads/FastTree -gtr -nt /Users/Madison/Desktop/newTatumella > /Users/Madison/Desktop/tree_file_tatumella.tre The alignment file will be the output file of the cleanup
script script. And the tree_file output name should include a path to where you want it to be located. The output name
should also end ends in .tre
in order to
ensure that it will be recognized by
Dendroscope Dendroscope.
##Viewing the Tree in Dendroscope
Download and install Dendroscope
...
You will need to obtain a license here
http://www-ab2.informatik.uni-tuebingen.de/software/dendroscope/register/
Enter the license into Dendrosope and then you can open your alignment
from the File menu to view
it (file it.
Once the tree is visible, the first step is to re-root the tree to the outgroup. Expand the tree by clicking the expansion button (labeled in the above screen shot), Figure X), then scroll through the tree to locate the outgroup. Click on the beginning of the taxa name, to select it, and reroot the tree by going to edit and selecting re-root. We recommend viewing the tree as a phylogram which can be accomplished by clicking on the phylogram button (labeled in the above screen shot). Figure X). From this tree it should be possible to determine the phylogenetic placement of the candidate sequence, and in some cases to give it a name with more certainty than a simple BLAST search. Below are examples of a relatively informative tree and a relatively uninformative tree:
TI
In tree shown above (genus Brachybacterium), our sample of interest from an assembly is "Brachybacterium muris UCD-AY4" (REF). It falls within a clade where every named member has the same name "Brachybacterium muris", and this name does not occur elsewhere on the tree. Hence, we were confident enough to name our sample as that species.
In other words, this sequence falls within a well-supported (note 0.999 bootstrap support,) monophyletic clade of _Brachybacterium muris_.
In the tree shown above (genus Microbacterium) our species of interest is Microbacterium sp. str. UCD-TDU (REF). In contrast to the Brachybacterium example, here our species falls within a poorly defined clade containing multiple species. In this case we did not assign a species name to this isolate.