[BioC] yeast2 LOCUSID environment

[John Zhang]

>I was just wondering why there is no "LOCUSID" environment associated  
>with the yeast2 annotation package.  I know from looking up some S.  
>cerevisiae genes by hand on the Entrez Gene website that yeast genes  
>do have the Entrez accession numbers.  The lack of this environment  
>for the yeast2 package makes it difficult to use functions like  
>GOHyperG that depend on the presence of the LOCUSID environment.   
>Could someone enlighten me on this?
>

The yeast annotation data package uses data from the YeastGenome database. When 
the code for building the package was written, it did not appear to be a clean 
way of mapping the probes to  Entrez Gene ids. I checked the YeastGenome web 
site this morning and found that mappings between ORFs and NCBI RefSeq ids are 
available now. So, it seems to be possible to include a LOCUSID environment but 
someone has to spend a few hours to create it and make it right.   

>Thanks,
>
>Jake
>
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Jianhua Zhang
Department of Medical Oncology
Dana-Farber Cancer Institute
44 Binney Street
Boston, MA 02115-6084