Elk-1

The ERK-Elk-1 protein-protein interaction is a pivotal regulatory step in cellular signaling, where ERK1/2 phosphorylates the transcription factor Elk-1 following stimulation by growth factors, cytokines, or other external signals. Activated ERK translocates to the nucleus and phosphorylates Elk-1 at key serine residues (notably S383 and S389), which converts Elk-1 from an inactive to an active state, enabling it to partner with serum response factor (SRF) and bind to the serum response element (SRE) in gene promoters. This event is critical for the rapid induction of immediate early genes involved in cell proliferation, survival, differentiation, and neuronal plasticity. Dysregulation of this pathway is implicated in cancer, neurodegenerative disorders, and other diseases. Modulation of the pathway is targeted pharmacologically at ERK or upstream kinases, but no therapies directly disrupt ERK-Elk-1 physical interaction in current clinical use. Note: The request refers to a mechanism ("ERK-Elk-1 protein-protein interaction"), not a discrete target protein; thus, structured entries for "canonical_name" etc. should use "Elk-1" as the closest matching canonical target and flag "is_incorrect: true" for the given query name.

Other names

Elk1ETS domain-containing protein Elk-1MAPK-associated transcription factor Elk-1ELK1 (gene/protein symbol)

Drugs targeting this pathway primarily act by inhibiting ERK phosphorylation (which prevents Elk-1 activation) or by inhibiting MEK (which is upstream of ERK, thus preventing Elk-1 phosphorylation). This ultimately modulates Elk-1 DNA binding activity via its phosphorylation status.