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KSR1 (Kinase suppressor of Ras 1) is a protein kinase, an enzyme that switches other proteins on by adding phosphate groups. In the public catalogues the evidence so far is association rather than a proven role. This dossier gathers the 0 products (0 approved), 0 trials, 0 pathways and 0 resistance routes in the corpus that involve it, with external identifiers so it can be joined to UniProt, ChEMBL, Open Targets and the rest of biology.

Biology

Part of a multiprotein signalling complex which promotes phosphorylation of Raf family members and activation of downstream MAP kinases. Independently of its kinase activity, acts as MAP2K1/MEK1 and MAP2K2/MEK2-dependent allosteric activator of BRAF; upon binding to MAP2K1/MEK1 or MAP2K2/MEK2, dimerises with BRAF and promotes BRAF-mediated phosphorylation of MAP2K1/MEK1 and/or MAP2K2/MEK2. Promotes activation of MAPK1 and/or MAPK3, both in response to EGF and to cAMP. Its kinase activity is unsure. Some protein kinase activity has been detected in vitro, however the physiological relevance of this activity is unknown. Location: Cytoplasm; Membrane; Cell membrane; Cell projection, ruffle membrane (UniProt). Locus 17q11.2 (HGNC).

Class: kinase · Gene: KSR1 · Facts checked 2026-09-23 · Target page

External identifiers

Built from HGNC, Ensembl, UniProt and ChEMBL ids

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Resistance routes

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Companion diagnostics

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Literature

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Query for this target: (TITLE:"KSR1" OR ABSTRACT:"KSR1" OR TITLE:"kinase suppressor of ras 1" OR ABSTRACT:"kinase suppressor of ras 1" OR TITLE:"Kinase suppressor of Ras 1" OR ABSTRACT:"Kinase suppressor of Ras 1" OR TITLE:"RSU2" OR ABSTRACT:"RSU2") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about KSR1, not a curated reading list.

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The dossier as machine-readable JSON: identifiers from HGNC, Ensembl, UniProt and ChEMBL, products with status, trials, pathways, hotspots, open questions and assays. The full entity record is in the open API at /api/v1/entities/ksr1.json. Licence CC BY-NC 4.0.