GOCCOFFSPRING               package:GO               R Documentation

_A_n_n_o_t_a_t_i_o_n _o_f _G_O _I_d_e_n_t_i_f_i_e_r_s _t_o _t_h_e_i_r _C_e_l_l_u_l_a_r _C_o_m_p_o_n_e_n_t _O_f_f_s_p_r_i_n_g

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

     This is an R environment (hash table) mapping GO ids to all the GO
     ids of their offspring based on the  cellular component (CC) GO
     terms. Offspring are defined as the direct or indirect
     children/grand children nodes of a given node for a GO id based on
     the directed acyclic graph defined by Gene Ontology Consortium. GO
     terms for offspring nodes are more specific than that of the
     parent.

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

     GO ids are keys and the corresponding offspring GO ids are values.
     Values are vectors of GO ids for all the offspring of the key GO
     id. GO ids that do not have any offspring node are assigned NA as
     the value. 

     Cellular component is defined as the subcellular structures,
     locations, and macromolecular complexes; examples include nucleus,
     telomere, and origin recognition complex as defined b y Gene
     Ontology Consortium. 

     Mappings were based on data provided:

     Gene Ontology:<URL:
     http://gopher5/compbio/annotationSourceData/www.godatabase.org/dev
     /database/archive/latest/>. Built: 200504

     Package built: Tue May 17 09:56:06 2005

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

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

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

       require("GO", character.only = TRUE) || stop("GO unavailable")
       # Convert the environment object to a list
       xx <- as.list(GOCCOFFSPRING)
       # Remove GO ids that do not have any offspring
       xx <- xx[!is.na(xx)]
       if(length(xx) > 0){
         # Get the offspring GO ids for the first two elents of xx
         goids <- xx[1:2]
       }

