mgu74aUNIGENE             package:mgu74a             R Documentation

_M_a_p _b_e_t_w_e_e_n _M_a_n_u_f_a_c_t_u_r_e_r _I_d_e_n_t_i_f_i_e_r_s _a_n_d _U_n_i_G_e_n_e _c_l_u_s_t_e_r _i_d_e_n_t_i_f_i_e_r_s

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

     mgu74aUNIGENE is an R environment that provides mappings between
     manufacturer identifiers and UniGene identifiers.

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

     Each manufacturer identifier is mapped to a UniGene identifier. An
     'NA' is reported if the manufacturer identifier cannot be mapped
     to UniGene at this time. 

     A UniGene identifier represents a cluster of sequences of a gene.
     Using UniGene identifiers one can query the UniGene database for
     information about the sequences or the Entrez Gene database for
     information about the genes.  

     Mappings were based on data provided by:

     Entrez Gene:\<URL: ftp://ftp.ncbi.nlm.nih.gov/gene/DATA/>. Built:
     Source data downloaded from Entrez Gene on Thu Mar 15 17:37:22
     2007

     Package built Thu Mar 15 17:57:39 2007

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

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

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

         # Convert the environment to a list
         xx <- as.list(mgu74aUNIGENE)
         # Remove probe identifiers that do no map to any UniGene id
         xx <- xx[!is.null(xx)]
         if(length(xx) > 0){
             # The UniGene identifiers for the first two elements of XX
             xx[1:2]
             # Get the first one
             xx[[1]]
         }

