GOLL2GO                  package:GO                  R Documentation

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

     This is an R environment (hash table) mapping LocusLink ids to GO
     ids corresponding the genes represented by the LocusLink
     identifiers

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

     LocusLink ids are keys and the corresponding GO ids are values.
     Values are named vectors of length 1 or greater depending on
     whether a given LocusLink id can be mapped to only one or more GO
     ids. Names for values are the evidence codes for the GO ids (if
     evidence code was provided by source data). The evidence codes in
     use include:

     IMP - inferred from mutant phenotype  

     IGI - inferred from genetic interaction

     IPI - inferred from physical interaction  

     ISS - inferred from sequence similarity  

     IDA - inferred from direct assay  

     IEP - inferred from expression pattern  

     IEA - inferred from electronic annotation  

     TAS - traceable author statement  

     NAS - non-traceable author statement  

     ND - no biological data available  

     IC - inferred by curator

     NA is assigned to LocusLink id that can not be mapped to any GO id
     at this time. 

     Mappings were based on data provided by:

     LocusLink built: March  3, 2004. <URL:
     ftp://ftp.ncbi.nih.gov/refseq/LocusLink/LL_tmpl.ga>

     Package built: Wed Mar  3 16:27:29 2004

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

     <URL: http://www.ncbi.nlm.nih.gov/LocusLink>

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

             require("GO") || stop("GO unavailable")
             # Convert the environment object to a list
             xx <- as.list(GOLL2GO)
             # Remove LocusLink ids that are not mapped to any GO id
             xx <- xx[!is.na(xx)]
             if(length(xx) > 0){
                     # Get the GO ids for the first two elents of xx
                     goids  <- xx[1:2]
                     # Get the evidence code goids
                     evds <- sapply(goids, names)
             }

