. "\"The initiation of the activity of the inactive enzyme MAP kinase by phosphorylation by a MAPKK.\" [PMID:9561267]" . . "activation of MAPK activity" . "activation of MAP kinase" . "MAPK activation" . "Reactome:REACT_100881 \"activated TAK1 mediates p38 MAPK activation, Canis familiaris\"" . "Reactome:REACT_101870 \"ERK activation, Caenorhabditis elegans\"" . "Reactome:REACT_101978 \"ERK activation, Drosophila melanogaster\"" . "Reactome:REACT_102664 \"activated TAK1 mediates p38 MAPK activation, Caenorhabditis elegans\"" . "Reactome:REACT_102813 \"activated TAK1 mediates p38 MAPK activation, Arabidopsis thaliana\"" . "Reactome:REACT_103235 \"ERK activation, Sus scrofa\"" . "Reactome:REACT_103251 \"activated TAK1 mediates p38 MAPK activation, Dictyostelium discoideum\"" . "Reactome:REACT_106101 \"ERK activation, Bos taurus\"" . "Reactome:REACT_112664 \"ERK activation, Oryza sativa\"" . "Reactome:REACT_113767 \"ERK activation, Dictyostelium discoideum\"" . "Reactome:REACT_114778 \"ERK activation, Arabidopsis thaliana\"" . "Reactome:REACT_1482 \"ERK activation, Homo sapiens\"" . "Reactome:REACT_21399 \"activated TAK1 mediates p38 MAPK activation, Homo sapiens\"" . "Reactome:REACT_25355 \"MAPK activation in TLR cascade, Gallus gallus\"" . "Reactome:REACT_25370 \"Activated TAK1 mediates p38 MAP kinase phosphorylation, Gallus gallus\"" . "Reactome:REACT_28684 \"ERK activation, Gallus gallus\"" . "Reactome:REACT_29727 \"activated TAK1 mediates p38 MAPK activation, Xenopus tropicalis\"" . "Reactome:REACT_30502 \"ERK activation, Saccharomyces cerevisiae\"" . "Reactome:REACT_32301 \"activated TAK1 mediates p38 MAPK activation, Rattus norvegicus\"" . "Reactome:REACT_34590 \"ERK activation, Rattus norvegicus\"" . "Reactome:REACT_77440 \"activated TAK1 mediates p38 MAPK activation, Mus musculus\"" . "Reactome:REACT_77987 \"ERK activation, Taeniopygia guttata\"" . "Reactome:REACT_78017 \"activated TAK1 mediates p38 MAPK activation, Bos taurus\"" . "Reactome:REACT_83894 \"activated TAK1 mediates p38 MAPK activation, Sus scrofa\"" . "Reactome:REACT_84937 \"ERK activation, Schizosaccharomyces pombe\"" . "Reactome:REACT_86273 \"activated TAK1 mediates p38 MAPK activation, Taeniopygia guttata\"" . "Reactome:REACT_86655 \"activated TAK1 mediates p38 MAPK activation, Danio rerio\"" . "Reactome:REACT_87442 \"activated TAK1 mediates p38 MAPK activation, Drosophila melanogaster\"" . "Reactome:REACT_88492 \"ERK activation, Canis familiaris\"" . "Reactome:REACT_88606 \"ERK activation, Mus musculus\"" . "Reactome:REACT_91962 \"activated TAK1 mediates p38 MAPK activation, Oryza sativa\"" . "Reactome:REACT_93371 \"activated TAK1 mediates p38 MAPK activation, Gallus gallus\"" . "Reactome:REACT_98123 \"ERK activation, Xenopus tropicalis\"" . "Reactome:REACT_99633 \"ERK activation, Danio rerio\"" . . . . "activation of MAPK activity during sporulation" .