ArticleEMBO reports2022
ENTREP/FAM189A2 encodes a new ITCH ubiquitin ligase activator that is downregulated in breast cancer.
Article in EMBO reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed, 19 citations in OpenAlex.
- Identification and validation of an interaction between the E3 ubiquitin ligase WWP1 and the Transcriptional Co-Activator WBP2 in the human heart.Biology open · 2026Article
- E3 ubiquitin ligases in bone homeostasis: from regulatory mechanisms to skeletal diseases and therapeutic targeting.Frontiers in cell and developmental biology · 2026Review
- FAM189A2 activates Hippo signaling pathway by abrogating WWP2-mediated LATS1 ubiquitination, to inhibit the glycolysis and proliferation processes of lung adenocarcinoma.Journal of translational medicine · 2025Article
- Exploring the potential function of high expression ofWorld journal of gastrointestinal oncology · 2025Article
- A Transcriptomic Signature of Depressive Symptoms in Late Life.Biological psychiatry global open science · 2025Article
- Crotonylation-Related Prognostic Model of Esophageal Squamous Cell Carcinoma Based on Transcriptome Analysis and Single-Cell Sequencing Analysis.International journal of general medicine · 2025Article
- Development and validation of machine learning models for diagnosis and prognosis of lung adenocarcinoma, and immune infiltration analysis.Scientific reports · 2024Article
- Myofibrillogenesis Regulator-1 Regulates the Ubiquitin Lysosomal Pathway of Notch3 Intracellular Domain Through E3 Ubiquitin-Protein Ligase Itchy Homolog in the Metastasis of Non-Small Cell Lung Cancer.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- Genenames.org: the HGNC resources in 2023.Nucleic acids research · 2023Article
- Chromatin accessibility landscape and active transcription factors in primary human invasive lobular and ductal breast carcinomas.Breast cancer research : BCR · 2022Article
- ENTREP/FAM189A2 encodes a new ITCH ubiquitin ligase activator that is downregulated in breast cancer.EMBO reports · 2022Article
- Highly expressed FAM189B predicts poor prognosis in hepatocellular carcinoma.Pathology oncology research : POR · 2022Article
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Authors and funding
13 authors at 3 institutions in 1 country.
Funding
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Abstract
The HECT-type ubiquitin E3 ligases including ITCH regulate many aspects of cellular function through ubiquitinating various substrates. These ligases are known to be allosterically autoinhibited and to require an activator protein to fully achieve the ubiquitination of their substrates. Here we demonstrate that FAM189A2, a downregulated gene in breast cancer, encodes a new type of ITCH activator. FAM189A2 is a transmembrane protein harboring PPxY motifs, and the motifs mediate its association with and ubiquitination by ITCH. FAM189A2 also associates with Epsin and accumulates in early and late endosomes along with ITCH. Intriguingly, FAM189A2 facilitates the association of a chemokine receptor CXCR4 with ITCH and enhances ITCH-mediated ubiquitination of CXCR4. FAM189A2-knockout prohibits CXCL12-induced endocytosis of CXCR4, thereby enhancing the effects of CXCL12 on the chemotaxis and mammosphere formation of breast cancer cells. In comparison to other activators or adaptors known in the previous studies, FAM189A2 is a unique activator for ITCH to desensitize CXCR4 activity, and we here propose that FAM189A2 be renamed as ENdosomal TRansmembrane binding with EPsin (ENTREP).
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