hgu95eSYMBOL {hgu95e.db} | R Documentation |
hgu95eSYMBOL is an R object that provides mappings between manufacturer identifiers and gene abbreviations.
Each manufacturer identifier is mapped to an abbreviation for the
corresponding gene. An NA
is reported if there is no known
abbreviation for a given gene.
Symbols typically consist of 3 letters that define either a single gene (ABC) or multiple genes (ABC1, ABC2, ABC3). Gene symbols can be used as key words to query public databases such as Entrez Gene.
Mappings were based on data provided by: Entrez Gene ( ftp://ftp.ncbi.nlm.nih.gov/gene/DATA ) on 2007-Aug23
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=gene
x <- hgu95eSYMBOL # Get the probe identifiers that are mapped to a gene symbol mapped_probes <- mappedkeys(x) # Convert to a list xx <- as.list(x[mapped_probes]) if(length(xx) > 0) { # Get the SYMBOL for the first five probes xx[1:5] # Get the first one xx[[1]] }