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Ken Termiso
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@ken-termiso-1087
Last seen 9.6 years ago
Hi Sean,
Maybe from now on I'll just email you directly instead of the mailing
list
:)
Thanks for your reply...I did something similar to get what I wanted
and I
think it's pretty simple (provided you're using the affy annotation
file):
Say I wanted to get a list of all genes related to cell death:
# "ann" is a data frame containing the affy annotation file
HG-U133A_2_annot_csv.zip off their website
i <- grep("death", as.vector(ann$Gene.Ontology.Biological.Process))
j <- grep("apoptosis",
as.vector(ann$Gene.Ontology.Biological.Process))
k <- union(i,j)
k <- sort(k) #optional, but the union arg returns unsorted
te <- data.frame()
te <- ann[k,]
Now "te" is a data frame that contains the genes that have either
"death" or
"apoptosis" mentioned in GO Biol. Proc.
I see there in your reply that you are using the annotate library --
the
only annotation I've used is the affy file, which contains a lot of
fields
-- do you recommend using the annotate library over this? I've been
using
the affy file b/c it's a simple .csv file and thus is pretty
straightforward
to work with in R.
Thanks again,
Ken
>From: Sean Davis <sdavis2@mail.nih.gov>
>To: "Ken Termiso" <jerk_alert@hotmail.com>
>CC: bioconductor@stat.math.ethz.ch
>Subject: Re: [BioC] Anyone have a GO slim list for Affy HG-U133A or
>HG-U133Av2? Date: Thu, 24 Feb 2005 12:47:57 -0500
>
>Ken,
>
>You could certainly produce such a list by repeating what they have
done on
>that website. For example, for GO_slim, biologic process 3 (cell
cycle and
>proliferation):
>
>library(hgu133a)
>library(annotate)
>genes <-
>unlist(lookUp(c('GO:0007049','GO:0008283'),'hgu133a','GO2ALLPROBES'))
>genes <- genes[!duplicated(genes)]
>
>This will contain the genes in cell cycle and proliferation. It
wouldn't
>be hard to automate this process for each category. For those
categories
>that include EXCLUDE descriptions, you can use R set commands like
%in% to
>get the sets you want.
>
>Sean
>
>On Feb 24, 2005, at 11:44 AM, Ken Termiso wrote:
>
>>Hi,
>>
>>I'm using the affy HG-U133A_2_annot_csv.zip annotation file to
annotate my
>>data (which may be a bad idea to begin with..?), and would like to
be able
>>to use the GO slim categories to annotate my data (see
>>http://www.spatial.maine.edu/~mdolan/MGI_GO_Slim.html), instead of
the
>>extremely detailed GO categories already present in the affymetrix
file -
>>Gene.Ontology.Biological.Process, Gene.Ontology.Cellular.Component,
>>Gene.Ontology.Molecular.Function.
>>
>>Basically, the issue is that I don't want to have the 2,000 - 5,000
>>different annotation groups in my file. I want to be able to run
subset()
>>on very general groups, like "development" or "death".
>>
>>Thanks in advance,
>>Ken
>>
>>_______________________________________________
>>Bioconductor mailing list
>>Bioconductor@stat.math.ethz.ch
>>https://stat.ethz.ch/mailman/listinfo/bioconductor
>
