org.Hs.egUNIGENE {org.Hs.eg.db} | R Documentation

## Map between Entrez Gene Identifiers and UniGene cluster identifiers

### Description

org.Hs.egUNIGENE is an R object that provides mappings between entrez gene identifiers and UniGene identifiers.

### Details

Each entrez gene identifier is mapped to a UniGene identifier. An `NA` is reported if the entrez gene identifier cannot be mapped to UniGene at this time.

A UniGene identifier represents a cluster of sequences of a gene. Using UniGene identifiers one can query the UniGene database for information about the sequences.

Mappings were based on data provided by: Entrez Gene ( ftp://ftp.ncbi.nlm.nih.gov/gene/DATA ) on 2008-Apr2

### References

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=gene

### Examples

            x <- org.Hs.egUNIGENE
            # Get the Unigene identifiers that are mapped to an entrez gene id
            mapped_genes <- mappedkeys(x)
            # Convert to a list
            xx <- as.list(x[mapped_genes])
            if(length(xx) > 0) {
              # Get the UNIGENE for the first five genes
              xx[1:5]
              # Get the first one
              xx[[1]]
            }
            # For the reverse map:
            x <- org.Hs.egUNIGENE2EG
            # Get the entrez gene identifiers that are mapped to a Unigene id
            mapped_genes <- mappedkeys(x)
            # Convert to a list
            xx <- as.list(x[mapped_genes])
            if(length(xx) > 0) {
              # Get the entrez gene for the first five genes
              xx[1:5]
              # Get the first one
              xx[[1]]
            }

[Package org.Hs.eg.db version 2.2.0 Index]