OnCo

APOBEC3B (DNA dC->dU-editing enzyme APOBEC-3B) is an enzyme. In the public catalogues the evidence so far is association rather than a proven role. Tied to Skin 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

DNA deaminase (cytidine deaminase) which acts as an inhibitor of retrovirus replication and retrotransposon mobility via deaminase-dependent and -independent mechanisms. After the penetration of retroviral nucleocapsids into target cells of infection and the initiation of reverse transcription, it can induce the conversion of cytosine to uracil in the minus-sense single-strand viral DNA, leading to G-to-A hypermutations in the subsequent plus-strand viral DNA. The resultant detrimental levels of mutations in the proviral genome, along with a deamination-independent mechanism that works prior to the proviral integration, together exert efficient antiretroviral effects in infected target cells. Selectively targets single-stranded DNA and does not deaminate double-stranded DNA or single- or double-stranded RNA. Exhibits antiviral activity against simian immunodeficiency virus (SIV), hepatitis B virus (HBV) and human T-cell leukaemia virus type 1 (HTLV-1) and may inhibit the mobility of LTR and non-LTR retrotransposons. Location: Nucleus (UniProt). Locus 22q13.1 (HGNC).

Where it is found
  • Skin cancer: Open Targets association 0.50 with skin cancer (MONDO_0002898)
Class: enzyme · Gene: APOBEC3B · Facts checked 2026-09-23 · Target page

External identifiers

Built from HGNC, Ensembl, UniProt and ChEMBL ids
APOBEC3Bapolipoprotein B mRNA editing enzyme catalytic subunit 3B · 22q13.1HGNCEnsemblUniProtAlphaFold DBOpen TargetsCIViCOncoKBCOSMICcBioPortalDepMapHuman Protein AtlasNCBI GeneOMIM

Products by modality and phase

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Resistance routes

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No pathway diagram carries this target as a node.

Companion diagnostics

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Preclinical models

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Literature

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Query for this target: (TITLE:"APOBEC3B" OR ABSTRACT:"APOBEC3B" OR TITLE:"apolipoprotein B mRNA editing enzyme catalytic subunit 3B" OR ABSTRACT:"apolipoprotein B mRNA editing enzyme catalytic subunit 3B" OR TITLE:"DNA dC->dU-editing enzyme APOBEC-3B" OR ABSTRACT:"DNA dC->dU-editing enzyme APOBEC-3B" OR TITLE:"PHRBNL" OR ABSTRACT:"PHRBNL" OR TITLE:"FLJ21201" OR ABSTRACT:"FLJ21201") 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 APOBEC3B, 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/apobec3b.json. Licence CC BY-NC 4.0.