GOMFOFFSPRING             package:GO.db             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 _M_o_l_e_c_u_l_a_r _F_u_n_c_t_i_o_n _O_f_f_s_p_r_i_n_g

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

     This data set describes associations between GO molecular function
     (MF) terms and their offspring MF terms, based on the directed
     acyclic graph (DAG) defined by the Gene Ontology Consortium. The
     format is an R object mapping the GO MF terms to all offspring
     terms, where an ancestor term is a more specific GO term that is
     preceded by the given GO term in the DAG (in other words, the
     children and all their children, etc.).

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

     Each GO MF term is mapped to a vector of offspring GO MF terms.

     Molecular function is defined as the tasks performed by individual
     gene products; examples are transcription factor and DNA helicase
     as defined by Gene Ontology Consortium.  

     Mappings were based on data provided by: Gene Ontology (
     ftp://ftp.geneontology.org/pub/go/godatabase/archive/latest ) on
     200803

_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:

       # Convert the object to a list
       xx <- as.list(GOMFOFFSPRING)
       # Remove GO identifiers that do not have any offspring
       xx <- xx[!is.na(xx)]
       if(length(xx) > 0){
         # Get the offspring GO identifiers for the first two elents of xx
       goids <- xx[1:2]
       }

