hsahomologyLL2HGID        package:hsahomology        R Documentation

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_H_o_m_o_l_o_G_e_n_e_I_D_s _f_o_r _H_o_m_o _s_a_p_i_e_n_s

_D_e_s_c_r_i_p_t_i_o_n:

     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).

_D_e_t_a_i_l_s:

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

     Packagebuilt Fri Jan  7 09:30:30 2005

_R_e_f_e_r_e_n_c_e_s:

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

_E_x_a_m_p_l_e_s:

         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]
                     }
             }

