OnCo

ATIC (Bifunctional purine biosynthesis protein ATIC) is an enzyme. In the public catalogues the evidence so far is association rather than a proven role. Tied to Lung cancer. 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

Bifunctional enzyme that catalyses the last two steps of purine biosynthesis. Acts as a transformylase that incorporates a formyl group to the AMP analog AICAR (5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide) to produce the intermediate formyl-AICAR (FAICAR). Can use both 10-formyldihydrofolate and 10-formyltetrahydrofolate as the formyl donor in this reaction. Also catalyses the cyclisation of FAICAR to inosine monophosphate (IMP). Is able to convert thio-AICAR to 6-mercaptopurine ribonucleotide, an inhibitor of purine biosynthesis used in the treatment of human leukaemias. Promotes insulin receptor/INSR autophosphorylation and is involved in INSR internalisation. Location: Cytoplasm, cytosol (UniProt). Locus 2q35 (HGNC).

Where it is found
  • Lung cancer: Open Targets association 0.53 with lung cancer (MONDO_0008903)
Class: enzyme · Gene: ATIC · Facts checked 2026-09-23 · Target page

External identifiers

Built from HGNC, Ensembl, UniProt and ChEMBL ids
ATIC5-aminoimidazole-4-carboxamide ribonucleotide formyltransferase/IMP cyclohydrolase · 2q35HGNCEnsemblUniProtAlphaFold DBOpen TargetsCIViCOncoKBCOSMICcBioPortalDepMapHuman Protein AtlasNCBI GeneOMIM

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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:"ATIC" OR ABSTRACT:"ATIC" OR TITLE:"5-aminoimidazole-4-carboxamide ribonucleotide formyltransferase/IMP cyclohydrolase" OR ABSTRACT:"5-aminoimidazole-4-carboxamide ribonucleotide formyltransferase/IMP cyclohydrolase" OR TITLE:"Bifunctional purine biosynthesis protein ATIC" OR ABSTRACT:"Bifunctional purine biosynthesis protein ATIC" OR TITLE:"AICARFT" OR ABSTRACT:"AICARFT" OR TITLE:"IMPCHASE" OR ABSTRACT:"IMPCHASE") 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 ATIC, 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/atic.json. Licence CC BY-NC 4.0.