OnCo

JUN (Transcription factor Jun) is a protein that switches other genes on and off. The public catalogues list it as a drug target and a biomarker, and clinical evidence ties its variants to diagnosis, prognosis or drug response. Tied to Colorectal cancer, Skin cancer and Melanoma. 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

Transcription factor that recognises and binds to the AP-1 consensus motif 5'-TGA[GC]TCA-3'. Heterodimerises with proteins of the FOS family to form an AP-1 transcription complex, thereby enhancing its DNA binding activity to the AP-1 consensus sequence 5'-TGA[GC]TCA-3' and enhancing its transcriptional activity. Together with FOSB, plays a role in activation-induced cell death of T cells by binding to the AP-1 promoter site of FASLG/CD95L, and inducing its transcription in response to activation of the TCR/CD3 signalling pathway. Promotes activity of NR5A1 when phosphorylated by HIPK3 leading to increased steroidogenic gene expression upon cAMP signalling pathway stimulation. Involved in activated KRAS-mediated transcriptional activation of USP28 in colorectal cancer (CRC) cells. Binds to the USP28 promoter in colorectal cancer (CRC) cells. Location: Nucleus (UniProt). Locus 1p32.1 (HGNC).

Where it is found
  • Colorectal cancer: Open Targets association 0.54 with colorectal cancer (MONDO_0005575); CIViC evidence names this disease
  • Skin cancer: Open Targets association 0.56 with skin cancer (MONDO_0002898)
  • Melanoma: Open Targets association 0.56 with melanoma (MONDO_0005105)
Class: transcription · Gene: JUN · Facts checked 2026-09-23 · Target page

External identifiers

Built from HGNC, Ensembl, UniProt and ChEMBL ids

Products by modality and phase

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Resistance routes

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Companion diagnostics

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Preclinical models

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Literature

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Query for this target: (TITLE:"JUN" OR ABSTRACT:"JUN" OR TITLE:"Jun proto-oncogene, AP-1 transcription factor subunit" OR ABSTRACT:"Jun proto-oncogene, AP-1 transcription factor subunit" OR TITLE:"Transcription factor Jun" OR ABSTRACT:"Transcription factor Jun" OR TITLE:"c-Jun" OR ABSTRACT:"c-Jun" OR TITLE:"AP-1" OR ABSTRACT:"AP-1") 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 JUN, not a curated reading list.

Export

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/jun.json. Licence CC BY-NC 4.0.