hsahomologyLL2HGID {hsahomology} | R Documentation

## Mappings between public database ids and NCBI's Internal HomoloGeneIDs for Homo sapiens

### Description

Provides mappings between public database ids and internal HomoloGeneIDs (HGID) used by NCBI to represent sequences for Homo sapiens. Public database ids include LocusLink ids (LL) and GenBank Accesion/RefSeq numbers (ACC).

### Details

Each object is an environment object with key and value pairs. Keys are ids specified by the abbreviation proceeding the number 2 of the name of an object (e.g. LL in hsahomologyLL2HGID) and values are ids specified by the abbreviation following the number 2 (e.g. HGID in hsahomologyLL2HGID). Values may be vectors of length 1 or greater depending on whether a key id can be mapped to only one or more other ids. Vector names are the code used by NCBI for various organism.

hsahomologyLL2HGID or hsahomologyACC2HGID can be used to find the HomoloGeneIDs for a give LocusLink id or GenBank/RefSeq accession number and then the data for homologous genes found in other organisms.

Mappings contained were based on data provided by HomoloGene.

HomoloGene: ftp://ftp.ncbi.nih.gov/pub/HomoloGene/old/hmlg.ftp. Built: HomoloGene built date not available

Packagebuilt Fri Jan 7 09:30:30 2005

### References

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

### Examples

        require("annotate") || stop("annotate unavailable")
        xx <- as.list(hsahomologyLL2HGID)
            if(length(xx) > 5){
                    # Get the value of the first key
                    xx[2]
                    # Get the value for a few keys
                    if(length(xx) >= 3){
                            xx[2:4]
                    }
            }

[Package hsahomology version 1.7.0 Index]