GOLOCUSID2GO {GO} | R Documentation |
This is an R environment (hash table) mapping LocusLink ids to specific gene ontology information regarding genes represented by the LocusLink identifiers. Specific gene ontology infomation include the associations between LocusLink ids and GO information reported by NCBI
LocusLink ids are keys and the corresponding GO information are values. Each locusLink id is mapped to a list with one (mapped to none or one GO id) or more (mapped to more than one GO ids) sub lits. Each sub list contains three elements named "GOID", "Ontology", and "Evidence". The value for element "GOID" gives the Gene Ontology identifier the key LocusLink id corresponds to. The value for element "Ontology" can be an abbreviation of MF (mocular function), BP (biological process),or CC (cellular component) for the GO category the GO id belongs to. The values for element "Evidence" contains an evidence code indicating what kind of evidence is found to support the association of the GO id to the LocusLink id. The evidence codes in use include:
IMP - inferred from mutant phenotype
IGI - inferred from genetic interaction
IPI - inferred from physical interaction
ISS - inferred from sequence similarity
IDA - inferred from direct assay
IEP - inferred from expression pattern
IEA - inferred from electronic annotation
TAS - traceable author statement
NAS - non-traceable author statement
ND - no biological data available
IC - inferred by curator
NA is assigned to LocusLink id that can not be mapped to any gene ontology information.
Mappings were based on data provided by:
LocusLink:ftp://ftp.ncbi.nih.gov/refseq/LocusLink/LL_tmpl.gz. Built: January 10, 2005
Package built: Mon Jan 10 19:19:56 2005
http://www.ncbi.nlm.nih.gov/LocusLink
require("GO") || stop("GO unavailable") # Convert the environment object to a list xx <- as.list(GOLOCUSID2GO) # Remove LocusLink ids that are not mapped to any GO id xx <- xx[!is.na(xx)] if(length(xx) > 0){ # Get the GO ids for the first two elents of xx goids <- xx[1:2] # Get the evidence code goids evds <- sapply(goids, names) }