celegansWORMBASE {celegans.db} | R Documentation

## Map Wormbase accession numbers with Entrez Gene identifiers

### Description

celegansWORMBASE is an R object that contains mappings between Entrez Gene identifiers and Wormbase accession numbers.

### Details

This object is a simple mapping of Entrez Gene identifiers http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=gene to Wormbase Accessions.

Mappings were based on data provided by: Entrez Gene ( ftp://ftp.ncbi.nlm.nih.gov/gene/DATA ) on 2009-Mar11

### Examples

        x <- celegansWORMBASE
        # Get the entrez gene IDs that are mapped to an Wormbase ID
        mapped_genes <- mappedkeys(x)
        # Convert to a list
        xx <- as.list(x[mapped_genes])
        if(length(xx) > 0) {
          # Get the Wormbase IDs for the first five genes
          xx[1:5]
          # Get the first one
          xx[[1]]
        }

[Package celegans.db version 2.2.11 Index]