| 2009 |
RNF168 is a chromatin-associated RING finger E3 ubiquitin ligase that binds ubiquitin via MIU domains, assembles at DSBs in an RNF8-dependent manner, and amplifies K63-linked ubiquitin conjugates on H2A and H2AX to the threshold required for retention of 53BP1 and BRCA1 at damage sites. |
Co-IP, in vitro ubiquitin ligase assay, siRNA knockdown, immunofluorescence at DSB foci, MIU domain mutagenesis |
Cell |
High |
19203579
|
| 2009 |
RNF168 ubiquitinates histones H2A and H2AX but not H2B, forming K63-linked polyubiquitin chains both in vitro and in vivo; MIU domain inactivation impairs ubiquitin binding and chromatin association in vivo. |
In vitro ubiquitin ligase assay, in vivo ubiquitination, MIU mutagenesis, immunofluorescence |
BMC molecular biology |
High |
19500350
|
| 2012 |
RNF168, but not RNF8, catalyzes monoubiquitination of nucleosomal H2A/H2AX specifically at K13-15; RNF8 is inactive toward nucleosomal H2A; structure-based mutagenesis of the RING domain identified a charged residue determining nucleosomal substrate recognition; K63-linked chains are conjugated to the RNF168-dependent K13-15 monoubiquitin mark, not K118-119. |
In vitro nucleosome ubiquitination assay, RING domain mutagenesis, mass spectrometry, structure-based analysis |
Cell |
High |
22980979
|
| 2012 |
RNF168 (and RNF8) ubiquitinate KDM4A/JMJD2A, targeting it for proteasomal degradation after DNA damage, thereby freeing H4K20me2 for 53BP1 binding; ectopic JMJD2A blocks 53BP1 recruitment to DSBs. |
In vitro ubiquitination assay, co-IP, proteasome inhibitor treatment, knockdown rescue experiment, 53BP1 foci assay |
The EMBO journal |
High |
22373579
|
| 2012 |
RNF168 generates a novel ubiquitin mark at the N-terminal tail of histone H2A at K13 and K15; histone mutants lacking K13/K15 impair RNF168-dependent ubiquitination; this site is distinct from the canonical C-terminal K118/K119 site. |
Histone mutagenesis, in vivo ubiquitination assay, mass spectrometry |
Cell cycle |
High |
22713238
|
| 2010 |
RNF168 contains a novel ubiquitin-binding domain called UMI (UIM- and MIU-related UBD) centered on two leucine residues; integrity of the UMI plus both MIUs is required for proper RNF168 localization to DDR foci and for H2A ubiquitination and 53BP1 recruitment. |
UBD mutagenesis, in vitro ubiquitin-binding assay, immunofluorescence at DDR foci |
Molecular and cellular biology |
High |
21041483
|
| 2015 |
RNF168 promotes noncanonical K27-linked ubiquitination both in vivo and in vitro; K27 of ubiquitin is required for RNF168-dependent chromatin ubiquitination of H2A/H2AX and is directly recognized by DDR mediators 53BP1, RAP80, RNF168, and RNF169. |
In vitro ubiquitination assay, ubiquitin mutant analysis, co-IP, DDR foci assay |
Cell reports |
High |
25578731
|
| 2013 |
RNF168 mediates K63-linked ubiquitylation of 53BP1, which is required for the initial recruitment of 53BP1 to DSB sites and for its functions in DNA damage repair, checkpoint activation, and genomic integrity. |
Co-IP, K63-ubiquitin chain analysis, 53BP1 IRIF assay, checkpoint activation assay, genome integrity readout |
Proceedings of the National Academy of Sciences of the United States of America |
High |
24324146
|
| 2014 |
The nucleosome acidic patch is required for RNF168-dependent H2A/H2AX ubiquitination; nucleosomes containing a mutated acidic patch show defective H2A ubiquitination by RNF168 in vitro; the acidic patch acts as substrate to enhance E3-mediated ubiquitin discharge from E2 and redirect ubiquitination to K13-15. |
In vitro nucleosome ubiquitination assay, acidic patch mutagenesis, in vivo DDR foci assay with LANA peptide |
Nature communications |
High |
24518117
|
| 2014 |
The nucleosome acidic patch is required for RNF168- and RING1B/BMI1-dependent H2A/H2AX ubiquitination in vivo; perturbation of the acidic patch by a viral LANA peptide results in defective H2AX ubiquitination and impaired RNF168-dependent 53BP1 and BRCA1 recruitment. |
Nucleosome acidic patch mutagenesis, in vitro ubiquitination assay, in vivo DDR foci assay |
PLoS genetics |
High |
24603765
|
| 2017 |
RNF169 bridges ubiquitin and histone surfaces via a three-pronged interaction (canonical ubiquitin-binding helix plus two arginine-rich motifs contacting the nucleosome acidic patch), stabilizing a pre-existing ubiquitin orientation on RNF168-ubiquitinated NCP to displace 53BP1; RAD18 binds NCP-ubme through a UBD contacting ubiquitin and nucleosome surfaces accessed by 53BP1. |
NMR spectroscopy, biochemical binding assays, displacement assays |
Molecular cell |
High |
28506460
|
| 2017 |
RNF168 directly interacts with PALB2 via a newly identified PALB2-interacting domain (PID) in RNF168 and the WD40 domain of PALB2; this interaction recruits PALB2-containing HR complexes to DSBs in S/G2 cells, coupling PALB2-dependent homologous recombination to H2A ubiquitylation. |
Co-IP, domain mapping, epistasis by siRNA knockdown, HR repair assay |
eLife |
High |
28240985
|
| 2018 |
L3MBTL2 is ubiquitylated by RNF8 and serves as the missing link that recruits RNF168 to DSBs; ubiquitylated L3MBTL2 facilitates RNF168 recruitment and promotes DSB repair. |
Co-IP, in vitro ubiquitination, siRNA knockdown, DDR foci assay, epistasis |
Nature cell biology |
High |
29581593
|
| 2018 |
The mTOR-S6K pathway phosphorylates RNF168 at Ser60, inhibiting its E3 ligase activity, accelerating its proteolysis, and impairing its function in the DNA damage response; loss of LKB1 hyperactivates mTORC1-S6K signaling and decreases RNF168 expression; phospho-deficient RNF168-S60A rescues DDR defects and suppresses tumorigenesis caused by Lkb1 loss. |
Phosphorylation assay, in vitro E3 ligase assay, mutagenesis (S60A), mouse tumor model, Western blot |
Nature cell biology |
High |
29403037
|
| 2019 |
RNF168, in addition to its canonical role in inhibiting end resection, acts redundantly with BRCA1 to load PALB2 onto damaged DNA; RNF168-generated mUb-H2A recruits BARD1 through a BRCT domain BUDR motif, and BARD1-BRCA1 subsequently accumulates PALB2-RAD51 at DSBs. |
Mouse genetics (epistasis), co-IP, PALB2-RAD51 foci assay, forced targeting of PALB2 |
Molecular cell |
High |
30704900
|
| 2019 |
RNF168 directly ubiquitylates DHX9 helicase to facilitate its recruitment to R-loop-prone genomic loci; RNF168 deficiency impairs DHX9 recruitment and R-loop resolution, leading to R-loop accumulation, DSBs, and senescence in BRCA1/2-mutant cells. |
Interactome assays, in vitro ubiquitination, siRNA knockdown, R-loop detection, DSB assay |
The Journal of clinical investigation |
High |
33529165
|
| 2019 |
RNF168-generated mUb-H2A recruits BARD1 via a BRCT domain ubiquitin-dependent recruitment motif (BUDR); subsequently BARD1-BRCA1 accumulate PALB2-RAD51 at DNA breaks via the coiled-coil domain-mediated BRCA1-PALB2 interaction. |
Co-IP, BRCT domain mutagenesis, HR foci assay, mouse genetics |
Nature communications |
High |
34408138
|
| 2019 |
The crystal structures of RNF168 UDM1 and UDM2 bound to K63-linked diubiquitin reveal that both domains fold as single α-helices and achieve specificity for K63-linked chains by simultaneously binding distal and proximal Ub moieties; mutations in UDM2 Ub-interacting residues prevent RNF168 accumulation at DSB sites. |
X-ray crystallography, mutagenesis, in vivo DSB foci accumulation assay |
Nature communications |
High |
29330428
|
| 2019 |
NMR spectroscopy and crosslinking mass spectrometry show that RNF168 binds the acidic patch on the nucleosome surface via its RING domain, directing the E2 to the K13/K15 target lysines to achieve ubiquitination site specificity. |
NMR spectroscopy, crosslinking mass spectrometry, mutagenesis, data-driven structural modelling |
Nature communications |
High |
30988309
|
| 2010 |
The viral E3 ligase ICP0 of herpes simplex virus type 1 targets RNF8 and RNF168 for proteasomal degradation, resulting in loss of ubiquitinated H2A forms and mobilization of DNA repair proteins, demonstrating that RNF168 is essential for anchoring repair factors at DSBs. |
Viral infection, Western blot for protein degradation, ubiquitinated H2A assay, repair factor foci assay |
The EMBO journal |
High |
20075863
|
| 2012 |
SMARCA5/SNF2H interacts with RNF168 in a DNA damage- and PARP-dependent manner; RNF168 becomes poly(ADP-ribosyl)ated after DNA damage; SMARCA5 promotes RNF168 accumulation at DSBs and subsequent ubiquitin conjugation; PARP selectively promotes spreading of SMARCA5 and RNF168-driven ubiquitin response. |
Co-IP, PARP inhibitor treatment, siRNA knockdown, IRIF assay, PARP activity assay |
Journal of cell science |
High |
23264744
|
| 2013 |
USP44 counteracts RNF8/RNF168-mediated ubiquitin signaling at DSBs by deubiquitinating H2A and inhibiting RNF168 accrual; USP44 is recruited to RNF168-generated ubiquitylation products at DSB sites. |
DUB overexpression screen, H2A deubiquitination assay, IRIF assay |
The Journal of biological chemistry |
High |
23615962
|
| 2013 |
USP3 deubiquitinates H2A and γH2AX at K13 and K15 (the RNF168 target sites) in response to DNA damage; USP3 overexpression abrogates ubiquitin-conjugate foci and impairs BRCA1 and 53BP1 accumulation at damage sites. |
Deubiquitination assay, mutagenesis of H2A K13/K15, IRIF assay, siRNA knockdown |
Cell cycle |
High |
24196443
|
| 2013 |
RNF168 forms a functional complex with RAD6A/RAD6B E2 enzymes; this complex targets histone H1.2 for ubiquitination in vitro and regulates DNA damage-induced H1.2 ubiquitination in vivo; loss of RAD6 reduces DNA damage-induced ubiquitination and impairs BRCA1/53BP1 foci. |
E2 screen, Co-IP, in vitro ubiquitination assay, IRIF assay, siRNA knockdown |
Journal of cell science |
High |
23525009
|
| 2014 |
RNF168 interacts with TOP2α and mediates its ubiquitylation; RNF168 deficiency impairs decatenation activity of TOP2α, promotes mitotic abnormalities, and confers resistance to etoposide; USP10 antagonizes RNF168 by deubiquitylating TOP2α. |
Co-IP, in vitro ubiquitination, decatenation assay, siRNA knockdown, mitotic abnormality assay |
Nature communications |
High |
27558965
|
| 2014 |
RNF168-mediated H2A neddylation antagonizes H2A ubiquitylation; RNF168 itself is a substrate for NEDD8, and neddylation of RNF168 is necessary for its E3 ubiquitin activity by enabling its interaction with the E2 enzyme Ubc13. |
In vitro neddylation and ubiquitination assay, Co-IP, NEDD8 pathway inhibition, siRNA knockdown |
Journal of cell science |
Medium |
24634510
|
| 2015 |
USP7 physically binds RNF168 in vitro and in vivo, deubiquitinates RNF168, and stabilizes it; USP7 disruption reduces H2A ubiquitination and impairs BRCA1 and 53BP1 foci formation; ectopic RNF168 expression rescues DDR defects in USP7-disrupted cells. |
Co-IP, in vitro binding assay, deubiquitination assay, IRIF assay, rescue experiment |
Cell cycle |
High |
25894431
|
| 2015 |
RNF168-dependent recruitment of LSD1 to DSBs promotes local H3K4me2 demethylation and H2A/H2AX ubiquitination; CK2-mediated phosphorylation of LSD1 at S131/S137 promotes its interaction with RNF168 and RNF168-dependent 53BP1 ubiquitination and recruitment; WIP1 dephosphorylates LSD1 to counteract this. |
Co-IP, kinase assay, phosphorylation-defective mutant analysis, 53BP1 foci assay |
Nucleic acids research |
Medium |
25999347
|
| 2016 |
RNF168 cooperates with RNF8 to ubiquitinate SUMOylated FOXM1 with K48-linked polyubiquitin chains, leading to its degradation; RNF8 recruits RNF168 to FOXM1 upon epirubicin treatment; SUMOylation of FOXM1 is required for RNF168 recruitment. |
Co-IP, ubiquitination assay with chain-linkage analysis, cycloheximide chase, FOXM1-5x(K>R) mutant |
Oncogenesis |
Medium |
27526106
|
| 2017 |
DNA damage-induced histone H1 ubiquitylation by HUWE1 is required for subsequent RNF8-dependent K63-linked chain extension on H1, which in turn stimulates RNF168 recruitment to damage sites; HUWE1 depletion reduces RNF168 and 53BP1 foci. |
di-Gly proteomics, siRNA knockdown, IRIF assay, epistasis analysis |
Scientific reports |
Medium |
29127375
|
| 2018 |
RNF168 ubiquitinates PARP1 via K48-linked chains, accelerating PARP1 degradation in the presence of PAR chains; PAR chains and RNF168's E3 ligase activity are both required for proper HR/NHEJ balance, as established by mutants lacking E3 or PAR-binding activity. |
Co-IP, mass spectrometry, in vitro ubiquitination assay, micro-irradiation accumulation assay, comet assay |
Molecules and cells |
Medium |
30037213
|
| 2018 |
USP14 directly interacts with RNF168 via the MIU1 domain of RNF168, antagonizes RNF168-dependent ubiquitination of H2A and 53BP1 IRIF formation; USP14 is a substrate of autophagy via SQSTM1; loss of autophagy increases USP14 activity and impairs RNF168-dependent DDR. |
Co-IP with domain mapping (MIU1), DUB activity assay, siRNA knockdown, IRIF assay |
Autophagy |
Medium |
29995557
|
| 2019 |
HPV E7 oncoprotein binds directly to a new regulatory domain of RNF168 without affecting its enzymatic activity, subverting its function at DSBs and promoting homology-directed recombination; RNF168 knockdown impairs viral genome amplification in differentiated keratinocytes. |
Direct binding assay, in vitro E3 ligase activity assay, IRIF assay, HPV genome amplification assay |
Proceedings of the National Academy of Sciences of the United States of America |
Medium |
31501315
|
| 2019 |
PRMT5 sustains RNF168 expression; suppression of PRMT5 (in MTAP-deficient cells) attenuates RNF168, leading to H2AX destabilization by SMURF2; RNF168 and SMURF2 serve as a stabilizer and destabilizer of H2AX, respectively, via their dynamic interactions with H2AX. |
Western blot, siRNA knockdown, co-IP, H2AX stability assay |
Cell reports |
Medium |
31533041
|
| 2020 |
RNF168 ubiquitinates non-canonical H2A variants H2AZ and macroH2A1/2 at divergent N-terminal tail lysines; the positively charged alpha1-extension helix is essential for RNF168-mediated ubiquitination; mutation of RNF168 UMI hydrophilic acidic residues abolishes ubiquitination and 53BP1/BRCA1 IRIF formation. |
In vitro ubiquitination assay, histone variant mutagenesis, UMI domain mutagenesis, IRIF assay |
Nature communications |
High |
32424115
|
| 2021 |
RNF168 interacts with DHX9 helicase and directly ubiquitylates it to facilitate DHX9 recruitment to R-loop-prone loci; loss of RNF168 impairs DHX9 function in R-loop resolution. |
Interactome/Co-IP assay, in vitro ubiquitination, R-loop immunofluorescence, siRNA knockdown |
The Journal of clinical investigation |
High |
33529165
|
| 2021 |
RNF168 is epistatic with SLX4 in promoting MMC tolerance; RNF168 is required for mitomycin C-induced SLX4 foci formation and accumulation of SLX4 at ICL damage sites, establishing RNF168 as a critical E3 ligase in the ubiquitin signal transduction for Fanconi anemia pathway ICL repair. |
siRNA screen, IRIF assay, laser-ICL track accumulation, epistasis analysis |
Cell reports |
Medium |
34706224
|
| 2021 |
KMT5A is ubiquitinated by RNF8 in vitro and in vivo; RNF8-induced KMT5A ubiquitination increases its binding to RNF168; KMT5A interaction with the H2A acidic patch (via R188/R189) promotes RNF168's catalytic activity toward H2A; KMT5A links H4K20 monomethylation to H2A ubiquitination at DSBs. |
In vitro ubiquitination assay, Co-IP, acidic patch mutagenesis, H2A ubiquitination assay |
FASEB journal |
Medium |
33710666
|
| 2023 |
SUMOylated RNF168 undergoes liquid-liquid phase separation (LLPS), restricting its recruitment to DNA damage sites and reducing H2A ubiquitination; SENP1 acts as a specific deSUMOylase for RNF168, promoting deSUMOylation to prevent LLPS and enable RNF168 function at DSBs. |
SUMO modification assay, phase separation assay in vitro and in vivo, SENP1 Co-IP, H2A ubiquitination assay, NHEJ repair assay |
Cancer research |
High |
37350666
|
| 2023 |
HDAC6 interacts with H2A/H2AX to prevent its interaction with RNF168 in unstressed cells; upon DSBs, RNF168 ubiquitinates HDAC6 at K116, leading to its proteasomal degradation and enabling RNF168-H2A/H2AX interaction and H2A ubiquitination for DSB repair. |
Co-IP, in vitro ubiquitination, proteasome inhibition, site-directed mutagenesis (K116), repair factor foci assay |
Nucleic acids research |
High |
37503842
|
| 2024 |
Cryo-EM structures of RNF168-UbcH5c~Ub-nucleosome complex reveal a 'helix-anchoring' mode for RNF168 on the nucleosome, distinct from dimeric E3 ligases; structures capture transient H2A K13 and K15 monoubiquitination and adjacent dual monoubiquitination reactions. |
Cryo-EM structural determination, chemical ubiquitin ligation strategies, functional ubiquitination assay |
Nature chemical biology |
High |
39394267
|
| 2024 |
Cryo-EM and NMR reveal the complete reaction cycle of RNF168 on the nucleosome; a canonical ubiquitin-binding domain within full-length RNF168 engages both ubiquitin and the nucleosome surface, driving a signal amplification loop; this interaction clarifies how site-specific ubiquitin recognition propels H2A ubiquitin chain accumulation at DSBs. |
Cryo-EM, NMR spectroscopy, functional ubiquitination assay, mutagenesis |
Molecular cell |
High |
38242129
|
| 2024 |
K63-linked polyubiquitylated linker histone H1 directly stimulates RNF168 nucleosomal H2A ubiquitylation activity by enhancing RNF168 affinity to the chromatosome; UDM1 of RNF168 binds K63-linked ubiquitin chain on H1.0; H1K17Ub2 shows strongest RNF168 activation. |
Chemical synthesis of ubiquitylated H1 variants, in vitro ubiquitination assay, cryo-EM, biochemical affinity measurement |
Angewandte Chemie |
High |
39363740
|
| 2024 |
RNF168 is recruited to DNA replication factories via a degenerate PCNA-interacting peptide (DPIP) motif in its C-terminus and its MIU1 domain, mediating binding to mono-ubiquitylated PCNA; this recruitment is independent of the canonical ATM-RNF8 DSB response pathway; RNF168 promotes ongoing DNA replication via this PCNA-dependent mechanism. |
Domain mutagenesis (DPIP/MIU1), co-IP with PCNA, replication factory localization, DNA fiber assay, 53BP1 IRIF assay for separation of functions |
Nucleic acids research |
High |
39445802
|
| 2024 |
K63-linked polyubiquitin chains trigger RNF168 liquid-liquid phase separation (LLPS) via an intrinsically disordered region (aa 460-550); LLPS enhances RNF168-mediated H2A.X ubiquitination in a positive feedback loop; LLPS deficiency impairs 53BP1 and BRCA1 recruitment and DSB repair. |
In vitro phase separation assay with purified RNF168, in vivo condensate imaging, domain mapping, H2AX ubiquitination assay, DSB repair assay |
Proceedings of the National Academy of Sciences of the United States of America |
High |
38968116
|
| 2025 |
CDK1/2 phosphorylates RNF168 at threonine-208, inducing interaction with the peptidyl-prolyl isomerase PIN1; PIN1 promotes RNF168 SUMOylation at K210, resulting in p97/VCP-mediated removal of RNF168 from damaged chromatin; this PIN1-SUMO2/3 motif (SPaCR) limits excessive RNF168 accumulation and ubiquitin signaling. |
Phosphorylation assay, Co-IP, SUMOylation assay, mutagenesis (T208/K210), p97 inhibitor, IRIF assay |
Nature communications |
High |
40229270
|
| 2025 |
ZNF451 catalyzes SUMO2 modification of RNF168, stabilizing RNF168 and enhancing its accumulation at DSB sites; ZNF451 and RNF8 jointly regulate RNF168 in a competitive/cooperative manner; loss of both ZNF451 and RNF8 markedly impedes RNF168 recruitment. |
Co-IP, SUMOylation assay, IRIF assay, siRNA knockdown, epistasis analysis |
Cell death and differentiation |
Medium |
40055579
|
| 2024 |
UBE2D3 contributes to RNF168-mediated chromatin ubiquitination and 53BP1 recruitment at DSBs; simultaneously UBE2D3 limits RNF168 accumulation to facilitate ATM-mediated KAP1-S824 phosphorylation and NHEJ; RNF168 hyperaccumulation upon UBE2D3 loss causes aberrant PP2A activity that restricts KAP1 phosphorylation. |
siRNA knockdown, telomere NHEJ assay, IRIF assay, phosphorylation assay, epistasis analysis |
Nature communications |
Medium |
38866770
|
| 2015 |
RNF168 partially localizes to PML nuclear bodies through its UMI/MIU1 ubiquitin-interacting region; RNF168 associates with SUMO2/3-modified proteins via its ubiquitin-binding sequences; RNF168 preferentially binds hybrid SUMO2-K63 ubiquitin chains over K63-ubiquitin chains or SUMO2 alone in vitro; overexpression of RNF168 induces loss of PML nuclear bodies. |
shRNA screen, immunofluorescence localization, in vitro chain-binding assay, co-IP |
Journal of cell science |
Medium |
26675234
|
| 2009 |
The RNF8/RNF168 ubiquitination cascade facilitates B cell class switch recombination (CSR); knockdown of RNF168 or 53BP1 reduces CSR efficiency, while RNF8/RNF168 deficiency does not protect cells from Nutlin-3-mediated apoptosis (unlike 53BP1 deficiency), indicating separable functions. |
siRNA knockdown, CSR assay (IgA switching), Nutlin-3 apoptosis assay |
Proceedings of the National Academy of Sciences of the United States of America |
Medium |
20080757
|
| 2012 |
Structural analysis shows RNF168 RING domain adopts a C3HC4 cross-brace fold but, unlike RNF8, does not stably associate with UBC13 in vitro or in vivo; RING domains of RNF8 and RNF168 are not functionally interchangeable in domain-swap experiments. |
X-ray crystallography (RING domain), co-IP, in vitro binding assay, domain-swap experiment |
Cell cycle |
Medium |
23255131
|
| 2021 |
MRE11 and UBR5 cooperate to suppress RNF168 accumulation at dysfunctional telomeres; MRE11 limits RNF168 recruitment via BRCC3-mediated deubiquitination of γH2AX; UBR5 directly ubiquitinates and destroys RNF168 at telomeres; combined loss of MRE11 and UBR5 leads to RNF168/53BP1 telomeric accumulation and chromosome fusion reversed by RNF168 suppression. |
siRNA knockdown, co-IP, telomere FISH for fusion, 53BP1/RNF168 telomeric foci assay, epistasis |
Frontiers in oncology |
Medium |
34881184
|
| 2018 |
RNF168 stabilizes STAT1 protein by associating with it in the nucleus and inhibiting its poly-ubiquitination and degradation, thereby sustaining JAK-STAT signaling in esophageal cancer cells. |
Co-IP, ubiquitination assay, Western blot for protein stability, siRNA knockdown |
Journal of cellular and molecular medicine |
Low |
30506884
|
| 2021 |
RNF168 directly interacts with RhoC and promotes its ubiquitination and proteasomal degradation in non-small cell lung cancer cells; RNF168-mediated RhoC degradation suppresses cancer stem cell-like traits. |
Co-IP, ubiquitination assay, Western blot for protein stability, overexpression/knockdown functional assay |
Environmental toxicology |
Low |
34873829
|
| 2018 |
RNF126 directly interacts with and ubiquitinates RNF168; overexpression of catalytically active (but not inactive) RNF126 diminishes H2AX ubiquitination, FK2, 53BP1, and RAP80 foci; RNF126 is recruited to UV laser damage in an RNF8-dependent manner. |
Co-IP, in vitro ubiquitination assay, catalytic mutant analysis, IRIF assay |
Genomics, proteomics & bioinformatics |
Medium |
30529286
|
| 2023 |
Compound 5a (quinazoline-triazole derivative) directly binds both SQSTM1/P62 and RNF168, promoting their interaction, decreasing RNF168-mediated H2A ubiquitination, and compromising HR-mediated DNA repair. |
Target profiling/binding assay, H2A ubiquitination assay, HR repair assay, xenograft tumor model |
Journal of medicinal chemistry |
Low |
36331508
|
| 2017 |
NIPBL (cohesin loading factor) recruitment to DSBs requires RNF168 (and MDC1 and HP1γ); NIPBL accumulation at damage sites is mediated by its C-terminal HEAT repeat/HP1-interacting region. |
siRNA knockdown of RNF168, micro-irradiation IRIF assay, domain mapping |
Biochemical and biophysical research communications |
Medium |
21784059
|
| 2019 |
Cadmium directly binds to RNF168, induces its ubiquitin-proteasome-dependent degradation, and suppresses RNF168 ubiquitin-ligase activity in vitro, thereby disrupting DSB signaling and impairing 53BP1/BRCA1 recruitment. |
Direct binding assay, in vitro E3 ligase activity assay, proteasome inhibitor rescue, IRIF assay |
Food and chemical toxicology |
Medium |
31376412
|