[BioC] annotation for illumina mouse-6 arrays? & GOstats
mark.dunning at gmail.com
Sat Oct 3 13:01:17 CEST 2009
The annotation you need should already be in Bioconductor. If you are
trying to analyze the output of BeadStudio, you can run one of the
following in R depending on what the platform is:-
or with the bead-level data, one of the following
Hope this helps,
On Fri, Oct 2, 2009 at 12:56 AM, Yupu Liang <liang at cbio.mskcc.org> wrote:
> Sorry for the long email,
> I have two questions towards using GOstats for illumina mouse-6 data:
> 1-- I couldn't find the annotation package for illumina mouse-6 arrays under
> the downloads link,
> Is there a way for me to generate it myself? I do have the annotation
> information for the platform?
> 2--I tried to generated the entrez list for all the genes from the chip
> through the following code -- ulist is list of gene symbol from the chip
> x <- org.Mm.egSYMBOL2EG
> mapped_genes <- mappedkeys(x)
> xx <- as.list(x[mapped_genes])
> ulist.e <- unlist(glist.entrez,use.names=F)
> The problem of my code is there was original 20183 symbols, after remove the
> duplications(multiple probes for one gene), I got 14430 genes.
> But only 244 of them have entrez ids -- which makes no GO term significant.
>  "68617"
>  "68659"
> I am not sure what I did wrong? or how to get around this problem?
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