Atlas One · Host Biology · Scale 03 — Molecular

ERK1/2

Terminal kinases of the RAS-RAF-MEK-ERK cascade; activated by RTKs, BRAF, and KRAS → RSK, ELK1, c-FOS → proliferation and survival. BRAF V600E and KRAS mutations drive constitutive ERK activation; MEK inhibitors (trametinib, cobimetinib) block ERK in BRAF-mutant tumors.

Also known as: extracellular signal-regulated kinase, MAPK3, MAPK1, p44/p42 MAPK, ERK1, ERK2, p44 MAPK, p42 MAPK

Scale 03 — MolecularScale
draftStatus
2026-06-06Last Reviewed
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erk1-2

ERK1/2

Terminal kinases of the RAS-RAF-MEK-ERK cascade; activated by RTKs, BRAF, and KRAS → RSK, ELK1, c-FOS → proliferation and survival. BRAF V600E and KRAS mutations drive constitutive ERK activation; MEK inhibitors (trametinib, cobimetinib) block ERK in BRAF-mutant tumors.