\name{rnu34REFSEQ} \alias{rnu34REFSEQ} \title{Map between Manufacturer Identifiers and RefSeq Identifiers} \description{ rnu34REFSEQ is an R object that provides mappings between manufacturer identifiers and RefSeq identifiers. } \details{ Each manufacturer identifier is mapped to a named vector of RefSeq identifiers. The name represents the manufacturer identifier and the vector contains all RefSeq identifiers that can be mapped to that manufacturer identifier. The length of the vector may be one or greater, depending on how many RefSeq identifiers a given manufacturer identifier can be mapped to. An \code{NA} is reported for any manufacturer identifier that cannot be mapped to a RefSeq identifier at this time. RefSeq identifiers differ in format according to the type of record the identifiers are for as shown below: NG\_XXXXX: RefSeq accessions for genomic region (nucleotide) records NM\_XXXXX: RefSeq accessions for mRNA records NC\_XXXXX: RefSeq accessions for chromosome records NP\_XXXXX: RefSeq accessions for protein records XR\_XXXXX: RefSeq accessions for model RNAs that are not associated with protein products XM\_XXXXX: RefSeq accessions for model mRNA records XP\_XXXXX: RefSeq accessions for model protein records Where XXXXX is a sequence of integers. NCBI \url{http://www.ncbi.nlm.nih.gov/RefSeq/} allows users to query the RefSeq database using RefSeq identifiers. Mappings were based on data provided by: Entrez Gene ftp://ftp.ncbi.nlm.nih.gov/gene/DATA With a date stamp from the source of: 2012-Mar7 } \references{ \url{http://www.ncbi.nlm.nih.gov} \url{http://www.ncbi.nlm.nih.gov/RefSeq/} } \examples{ x <- rnu34REFSEQ # Get the probe identifiers that are mapped to any RefSeq ID mapped_probes <- mappedkeys(x) # Convert to a list xx <- as.list(x[mapped_probes]) if(length(xx) > 0) { # Get the REFSEQ for the first five probes xx[1:5] # Get the first one xx[[1]] } } \keyword{datasets}