| 2003 |
DTX3L (BBAP) functions as an E3 ubiquitin ligase, demonstrated by self-ubiquitination activity; DTX family members homodimerize and heterodimerize in vivo, with BBAP and DTX1 associating via their unique N termini to enhance self-ubiquitination. |
In vitro self-ubiquitination assay, co-immunoprecipitation |
The Journal of biological chemistry |
High |
12670957
|
| 2006 |
BBAP (DTX3L) regulates the subcellular localization of BAL1 (PARP9) through a dynamic shuttling mechanism, and both are regulated by a IFN-γ-responsive bidirectional promoter on chromosome 3q21. |
Immunofluorescence localization, reporter assay, co-expression studies |
Molecular and cellular biology |
Medium |
16809771
|
| 2009 |
BBAP (DTX3L) selectively monoubiquitylates histone H4 at lysine 91, and disruption of this activity is associated with loss of chromatin-associated H4K20 methylase, reduction in mono- and dimethyl H4K20, and delayed 53BP1 foci formation at DNA damage sites. |
In vitro ubiquitylation assay, site-directed mutagenesis, immunofluorescence of 53BP1 foci |
Molecular cell |
High |
19818714
|
| 2012 |
BAL1 (PARP9) is recruited to PARP1-PARylated DNA damage sites via its macrodomains in a PAR-dependent manner, and its partner DTX3L (BBAP) mediates local ubiquitylation that promotes subsequent BRCA1 and 53BP1 recruitment, functioning independently of ATM, MDC1, and RNF8. |
Genetic epistasis (ATM/MDC1/RNF8 knockouts), live-cell imaging, co-immunoprecipitation, PAR-binding assay |
Molecular and cellular biology |
High |
23230272
|
| 2014 |
DTX3L forms a complex with ARTD8 (PARP14) and ARTD9 (PARP9), and together these complexes repress IRF1 expression; DTX3L together with STAT1 and STAT3 mediates cell migration; ARTD8 enzymatic activity is required for survival in metastatic prostate cancer cells. |
Co-immunoprecipitation, siRNA knockdown with proliferation/survival/migration assays, Western blot |
Molecular cancer |
Medium |
24886089
|
| 2015 |
PARP9-DTX3L complex interacts with STAT1 and acts as an E3 ubiquitin ligase targeting host histone H2BJ to promote interferon-stimulated gene expression, and also targets viral 3C proteases for degradation via the immunoproteasome. |
Co-immunoprecipitation, transgenic mouse model, ubiquitin ligase assay, antiviral infection assay |
Nature immunology |
High |
26479788
|
| 2015 |
DTX3L depletion in melanoma cells decreases FAK/PI3K/AKT signaling activity but not MEK/ERK signaling, and reduces invasion and metastasis, establishing FAK/PI3K/AKT as the pathway through which DTX3L mediates melanoma metastasis. |
siRNA knockdown, invasion/metastasis assays, Western blot of signaling intermediates |
Oncotarget |
Medium |
26033450
|
| 2015 |
HDAC1,2 inhibition increases H4K91 acetylation, which competitively reduces BBAP (DTX3L)-mediated H4K91 monoubiquitination and impairs BBAP-dependent DSB repair. |
Small molecule inhibition, histone modification ChIP/Western blot, DSB repair assay |
Oncotarget |
Medium |
25605023
|
| 2016 |
BBAP (DTX3L) translocates from the cytoplasm to the nucleus upon paclitaxel treatment in vemurafenib-resistant melanoma cells, and this translocation decreases metastatic ability via downregulation of phospho-FAK and N-cadherin and upregulation of p21 and E-cadherin. |
Immunofluorescence, subcellular fractionation, invasion/migration assays |
Molecular medicine reports |
Low |
27922665
|
| 2017 |
DTX3L (PARP9/Dtx3L heterodimer) mediates NAD+-dependent mono-ADP-ribosylation of the carboxyl group of ubiquitin Gly76, exclusively in the context of ubiquitin processing by E1 and E2 enzymes; this ADP-ribosylation precludes substrate ubiquitylation. Poly(ADP-ribose) binding to PARP9 macrodomains increases E3 activity, while NAD+ restrains it. |
In vitro ADP-ribosylation assay, mutagenesis of NAD+ binding site, mass spectrometry, biochemical reconstitution |
Molecular cell |
High |
28525742
|
| 2020 |
DTX3L and ARTD9 (PARP9) associate with STAT1 under TNF-α stimulation in fibroblast-like synoviocytes and modulate STAT1 nuclear localization and transcriptional activity, promoting expression of MMP-9 and IL-6. |
Co-immunoprecipitation, immunofluorescence, siRNA knockdown, Western blot |
Tissue & cell |
Low |
32473705
|
| 2021 |
IFN signaling induces PARP9/DTX3L-dependent ADP-ribosylation of host proteins, and the SARS-CoV-2 Nsp3 macrodomain reverses this modification; however, deletion of PARP9 or DTX3L does not impair IFN signaling or induction of IFN-responsive genes, indicating ADP-ribosylation is a downstream effector rather than a signaling regulator. |
Immunofluorescence-based ADP-ribosylation assay, CRISPR knockout of PARP9/DTX3L, ectopic Nsp3 expression |
The Journal of biological chemistry |
High |
34358560
|
| 2022 |
The DTX3L D3 domain (residues 230-510) mediates interaction with PARP9 with nanomolar affinity and 1:1 stoichiometry; the N-terminal region (1-200) mediates higher-order oligomerization; ADP-ribosylation of ubiquitin Gly76 is reversible in vitro by macrodomain-type hydrolases. |
Recombinant protein reconstitution, binding affinity measurement, size-exclusion chromatography, in vitro deribosylation assay |
The Biochemical journal |
High |
35037691
|
| 2023 |
DTX3L rapidly co-localizes with p53 at PARP1-PARylated DNA damage sites, polyubiquitylates p53 on its lysine-rich C-terminal domain, and targets p53 for proteasomal degradation; DTX3L knockout significantly increases and prolongs p53 retention at damage sites. |
Co-immunoprecipitation, ubiquitylation assay, live-cell imaging, CRISPR knockout |
iScience |
High |
37096048
|
| 2023 |
DTX3L ubiquitinates TBK1 at K30 and K401 via K63-linked ubiquitination, and binds SRC tyrosine kinase to mediate TBK1 phosphorylation, establishing an IFN-β-ETS1-DTX3L-TBK1 positive-feedback loop. |
Co-immunoprecipitation, site-directed mutagenesis of ubiquitination sites, kinase phosphorylation assay |
Journal of virology |
Medium |
37255478
|
| 2023 |
DTX3L ubiquitinates NLRP3 via interaction between the NLRP3 LRR domain and the DTX3L RING domain, resulting in NLRP3 degradation and regulation of pyroptosis. |
Co-immunoprecipitation, mass spectrometry, domain mapping, ubiquitylation assay, LDH/cell death assays |
Biochimica et biophysica acta. Molecular cell research |
Medium |
36706922
|
| 2023 |
Dual ADP-ribosylation of closely spaced cysteines on the androgen receptor (AR) by PARP7 mediates recognition by the DTX3L/PARP9 complex with high affinity (Kd = 80.5 nM); oligomerization of the DTX3L/PARP9 complex is required for efficient ADP-ribosyl-peptide interaction. |
Synthetic peptide binding assay, fluorescence-based affinity measurement, deletion mutagenesis of oligomerization domain |
ACS chemical biology |
High |
37939374
|
| 2023 |
DTX3L mediates ubiquitination and degradation of cGAS in pancreatic cancer cells, suppressing cGAS-STING pathway activation and antitumor immunity. |
Co-immunoprecipitation, ubiquitylation assay, siRNA knockdown with STING pathway readout |
Biochemical and biophysical research communications |
Medium |
37774567
|
| 2024 |
Crystal structure of the DTX3L N-terminal D2 domain reveals a tetramer with D2 symmetry and two interfaces; D1-D2 domains mediate homo-oligomerization and are dispensable for PARP9 heterodimerization but required for assembling the high-molecular-weight oligomeric complex with efficient reader function for ADP-ribosylated androgen receptor. |
X-ray crystallography, native mass spectrometry, DTX3L-KO cell reconstitution with deletion mutants, ADP-ribose reader assay |
Protein science |
High |
38511494
|
| 2024 |
PARP14 is the major enzyme responsible for IFN-induced ADP-ribosylation; PARP9/DTX3L complex regulates PARP14 protein levels post-translationally and both localize to IFNγ-induced cytoplasmic inclusions; PARP14 ADP-ribosylates itself and DTX3L; PARP9 macrodomain 1 hydrolyzes PARP14 activity product. |
CRISPR knockout, immunofluorescence, mass spectrometry, in vitro ADP-ribosylation assay |
The EMBO journal |
High |
38834853
|
| 2024 |
PARP9/DTX3L complex is required to uphold PARP14 protein levels via post-translational mechanisms; KH-like domains in PARP9, DTX3L, and PARP14 coordinate protein-protein interactions; DTX3L interaction with PARP14 in vitro suppresses PARP14 auto-ADP-ribosylation and promotes trans-ADP-ribosylation of PARP9 and DTX3L; DTX3L homodimerization is coordinated by a KH-like domain. |
In vitro ADP-ribosylation assay, domain mutagenesis, co-immunoprecipitation, cell survival assay with truncation mutants |
Journal of molecular biology |
High |
38182103
|
| 2024 |
DTX3L ubiquitylates single-stranded DNA and RNA (and double-stranded DNA with ≥2 nt 3' overhang) via ester bond formation at the 3'-terminal adenosine; the minimal catalytic fragment comprises the C-terminal RING and DTC domains; NMR analysis shows the DTC domain binds single-stranded DNA and facilitates Ub transfer from RING-bound E2-conjugated Ub; this modification is reversibly cleaved by deubiquitinases including USP2, JOSD1, and SARS-CoV-2 PLpro. |
In vitro ubiquitylation assay, NMR, domain deletion mutagenesis, deubiquitinase cleavage assay |
eLife |
High |
39377462
|
| 2024 |
DTX3L ubiquitylates DNA and RNA in vitro via ester bond formation; this activity is shared with DTX3 but not DTX1, DTX2, or DTX4; DTX3L shows preference for 3'-terminal adenosine; ubiquitylation of nucleic acids is reversible by USP2, JOSD1, and SARS-CoV-2 PLpro. |
In vitro ubiquitylation assay with purified proteins and synthetic substrates, parallel testing of all DELTEX family members |
EMBO reports |
High |
39242775
|
| 2024 |
DTX3L ubiquitinates TIRR at lysine 187, facilitating XPO1-mediated TIRR nuclear export and proteasomal degradation after DNA damage; this displaces TIRR from 53BP1, impairing NHEJ and causing HR deficiency and PARP inhibitor sensitivity. |
Co-immunoprecipitation, site-directed mutagenesis (K187), nuclear export inhibition, PARP inhibitor sensitivity assay, chromosomal instability assay |
Nature communications |
High |
39632881
|
| 2025 |
DTX3L ubiquitinates USP28, leading to its proteasomal degradation, while USP28 counteracts by deubiquitinating both itself and DTX3L; this mutual regulation fine-tunes DSB repair across NHEJ, HR, SSA, and MMEJ pathways. |
Ubiquitylation assay, deubiquitylation assay, DSB repair pathway reporter assays, double knockdown rescue |
iScience |
High |
40703443
|
| 2023 |
DTX3L binds EGFR and prevents its ubiquitination-mediated degradation, thereby activating the FAK/PI3K/Akt pathway to promote pancreatic cancer progression. |
Co-immunoprecipitation, ubiquitylation assay, orthotopic tumor model, proliferation/invasion assays |
Biochemical genetics |
Medium |
37460862
|
| 2026 |
DTX3L directly interacts with and ubiquitinates SNAI1 (SNAIL), a master EMT regulator, leading to GSK-3β-dependent proteasomal degradation of SNAI1; loss of DTX3L stabilizes SNAI1 and enhances EMT and stem-like phenotypes in gastric cancer. |
Co-immunoprecipitation, ubiquitylation assay, cell line/organoid/animal model, TGF-β1/miR-135b-5p regulatory axis characterization |
Advanced science |
Medium |
41972409
|
| 2026 |
USP10 and DTX3L regulate SATB2 ubiquitination at K266 in glioma stem cells through mutually exclusive interactions and opposing activities; DTX3L acts as a ubiquitin ligase for SATB2, promoting its degradation. |
Co-immunoprecipitation, ubiquitylation assay, site-directed mutagenesis (K266), GSC self-renewal assay, in vivo tumor model |
Nature communications |
Medium |
41507172
|
| 2026 |
DTX3L binds PKCα through its RING domain and targets PKCα for K48-linked ubiquitination and proteasomal degradation, attenuating p38 MAPK phosphorylation to drive breast cancer progression. |
Co-immunoprecipitation, domain mapping, ubiquitylation assay, transcriptomics after KD, kinase phosphorylation assay |
International journal of biological macromolecules |
Medium |
41679478
|
| 2025 |
DTX3L promotes renal cell carcinoma progression by ubiquitinating and degrading the Hippo pathway tumor suppressor LATS2. |
Proteomic screening, co-immunoprecipitation, ubiquitylation assay, in vitro and in vivo tumor growth assays |
Cellular signalling |
Medium |
41203184
|