On 02/29/2012 11:13 AM, Ou, Jianhong wrote: > Hi Martin, > > Thank you for your reply. > > The question may be divided into two parts. The first part is like what you replied. The second one is that maybe the given GO term is the ancestor of other GO terms which are not annotated in the org.Hs.egGO db. > > I what I did for this is that fist map all the gene entrez_id into GO terms and get all the ancestor of the GO terms. Then go back to extract all the genes involved in one GO term. I don't really understand your question so probably shouldn't try to answer, but if I knew a GO term GO:0006281 I could find out about it and all its offspring (or immediate children, if I used GOBPCHILDREN) > library(GO.db) > GOTERM[["GO:0006281"]] GOID: GO:0006281 Term: DNA repair Ontology: BP Definition: The process of restoring DNA after damage. Genomes are subject to damage by chemical and physical agents in the environment (e.g. UV and ionizing radiations, chemical mutagens, fungal and bacterial toxins, etc.) and by free radicals or alkylating agents endogenously generated in metabolism. DNA is also damaged because of errors during its replication. A variety of different DNA repair pathways have been reported that include direct reversal, base excision repair, nucleotide excision repair, photoreactivation, bypass, double-strand break repair pathway, and mismatch repair pathway. > off = GOBPOFFSPRING[["GO:0006281"]] > length(off) [1] 91 > genes = mget(GOBPOFFSPRING[["GO:0006281"]], revmap(org.Hs.egGO), ifnotfound=NA) > head(genes[!is.na(genes)], 3) $`GO:0000012` IDA IDA IEA IDA IDA IMP "3981" "7141" "7515" "54840" "55775" "55775" IMP IEA "200558" "100133315" $`GO:0000710` IBA IBA ISS IBA IBA "2072" "2956" "2956" "4436" "4437" $`GO:0000715` IDA TAS IDA TAS "5887" "5887" "7508" "7508" Packages here http://bioconductor.org/packages/release/BiocViews.html#___GO might be helpful, for instance goTools. Martin > I will appreciated if there is any package can do this. > > Yours sincerely, > > Jianhong Ou > > jianhong.ou at umassmed.edu > > > On Feb 29, 2012, at 1:47 PM, Martin Morgan wrote: > >> On 02/27/2012 04:41 PM, Ou, Jianhong wrote: >>> Hello All, >>> >>> Is there any package can extract a gene list for a given GO term from human genome? >> >> >> For instance >> >> library(org.Hs.egGO) >> revmap(org.Hs.egGO)[["GO:0042254"]] >> IEA IEA IEA IEA IEA IBA IEA IEA >> "705" "3692" "4809" "6130" "6175" "6222" "6838" "10171" >> IEA IEA IC NAS IEA IEA IEA IEA >> "10969" "23212" "23246" "23246" "23560" "26164" "26284" "26574" >> IEA IEA IEA IEA IEA IEA IEA IEA >> "29102" "29889" "51154" "51187" "54552" "54680" "55299" "79631" >> IEA IEA IEA IDA IEA >> "81875" "84864" "85865" "92345" "124995" >> >> see >> >> vignette(package="AnnotationDbi", "AnnotationDbi") >> >> Martin >> >>> >>> Thanks a lot. >>> >>> Yours sincerely, >>> >>> Jianhong Ou >>> >>> jianhong.ou at umassmed.edu >>> >>> _______________________________________________ >>> Bioconductor mailing list >>> Bioconductor at r-project.org >>> https://stat.ethz.ch/mailman/listinfo/bioconductor >>> Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor >> >> >> -- >> Computational Biology >> Fred Hutchinson Cancer Research Center >> 1100 Fairview Ave. N. PO Box 19024 Seattle, WA 98109 >> >> Location: M1-B861 >> Telephone: 206 667-2793 > > -- Computational Biology Fred Hutchinson Cancer Research Center 1100 Fairview Ave. N. PO Box 19024 Seattle, WA 98109 Location: M1-B861 Telephone: 206 667-2793