Phosphorylated MAPKs phosphorylate ATF-2

Stable Identifier
R-HSA-168053
Type
Reaction
Species
Homo sapiens
Compartment
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the Raf–MEK–ERK pathway induces phosphorylation of ATF2 Thr71, whereas subsequent ATF2 Thr69 phosphorylation requires the Ral–RalGDS–Src–p38 pathway. Cooperation between ERK and p38 was found to be essential for ATF2 activation by these mitogens; the activity of p38 and JNK/SAPK in growth factor-stimulated fibroblasts is insufficient to phosphorylate ATF2 Thr71 or Thr69 + 71 significantly by themselves, while ERK cannot dual phosphorylate ATF2 Thr69 + 71 efficiently.

At the beginning of this reaction, 1 molecule of 'ATP', and 1 molecule of 'ATF-2' are present. At the end of this reaction, 1 molecule of 'ADP', and 1 molecule of 'ATF-2-P' are present.

This reaction is mediated by the 'protein kinase activity' of 'MAPK1-P'.

Literature References
PubMed ID Title Journal Year
10878576 p38 MAPK signalling cascades: ancient roles and new functions

Martin-Blanco, E

Bioessays 2000
Participants
Participates
Catalyst Activity

protein serine/threonine kinase activity of Activated MAPK kinases ERK1/2, JNK, p38 [nucleoplasm]

Orthologous Events
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