org.Sc.sgdCHRLOC {org.Sc.sgd.db} | R Documentation

## ORF IDs to Chromosomal Location

### Description

org.Sc.sgdCHRLOC is an R object that maps ORF identifiers to the starting position of the gene. The position of a gene is measured as the number of base pairs.

The CHRLOCEND mapping is the same as the CHRLOC mapping except that it specifies the ending base of a gene instead of the start.

### Details

Each ORF identifier maps to a named vector of chromosomal locations, where the name indicates the chromosome.

Chromosomal locations on both the sense and antisense strands are measured as the number of base pairs from the p (5' end of the sense strand) to q (3' end of the sense strand) arms. Chromosomal locations on the antisense strand have a leading "-" sign (e. g. -1234567).

Since some genes have multiple start sites, this field can map to multiple locations.

Mappings were based on data provided by: Yeast Genome ( ftp://genome-ftp.stanford.edu/pub/yeast/data_download ) on 2008-Sep06

### Examples

            x <- org.Sc.sgdCHRLOC
            # Get the ORF identifiers that are mapped to chromosome locations
            mapped_genes <- mappedkeys(x)
            # Convert to a list
            xx <- as.list(x[mapped_genes])
            if(length(xx) > 0) {
              # Get the CHRLOC for the first five genes
              xx[1:5]
              # Get the first one
              xx[[1]]
            }

[Package org.Sc.sgd.db version 2.2.6 Index]