| 2006 |
Tip60 (KAT5) directly acetylates p53 at lysine 120 (K120) within the DNA-binding domain; this modification is specifically required for p53-dependent apoptosis but dispensable for p53-mediated growth arrest, demonstrating that Tip60-dependent acetylation of p53 at K120 modulates cell fate decisions between arrest and apoptosis. |
In vitro acetyltransferase assay, site-directed mutagenesis (K120R), reporter assays, cell-based apoptosis and growth-arrest readouts |
Molecular cell |
High |
17189186
|
| 2002 |
Yeast Esa1 (ortholog of human KAT5/Tip60) is required for histone H4 acetylation and DNA double-strand break repair via both nonhomologous end joining and replication-coupled repair; Arp4 (part of the Esa1-containing NuA4 HAT complex) is recruited specifically to DSBs in vivo, and the purified Esa1-Arp4 HAT complex preferentially acetylates nucleosomes near break sites. |
Genetic mutant analysis, in vitro HAT assay with nucleosomal arrays, ChIP at induced DSBs |
Nature |
High |
12353039
|
| 2002 |
Yeast Esa1 (KAT5 ortholog) catalyzes histone acetylation via a self-acetylated cysteine intermediate (ping-pong mechanism), distinct from the direct nucleophilic attack mechanism of GCN5/PCAF; the catalytic cysteine is strictly conserved across the MYST subfamily, suggesting a common MYST catalytic mechanism. |
Crystal structure of Esa1-CoA complex, active-site mutagenesis, in vitro acetylation assays |
Nature structural biology |
High |
12368900
|
| 2012 |
GSK3 phosphorylates TIP60 at Ser86 upon growth factor deprivation, activating TIP60's acetyltransferase activity; activated TIP60 then directly acetylates ULK1 to stimulate autophagy. A TIP60(S86A) phosphorylation-defective mutant cannot undergo serum-deprivation-induced autophagy, and an acetylation-defective ULK1 mutant fails to rescue autophagy in ULK1-/- MEFs. |
In vitro kinase/acetyltransferase assays, phosphorylation-deficient knock-in mice, rescue experiments in ULK1-/- MEFs |
Science |
High |
22539723
|
| 2016 |
CDK1-cyclin B phosphorylates TIP60 at Ser90, which triggers TIP60-dependent acetylation of Aurora B at Lys215 during mitosis; this acetylation protects Aurora B's activation loop from PP2A-mediated dephosphorylation, ensuring accurate chromosome segregation. |
In vitro kinase/acetyltransferase assays, phospho-mimetic and acetylation-defective mutants, live-cell imaging of chromosome segregation |
Nature chemical biology |
High |
26829474
|
| 2021 |
TIP60 directly crotonylates EB1 at Lys66; this modification forms a dynamic link between astral microtubule attachment to the lateral cell cortex (via NuMA-LGN) and accurate spindle positioning during mitosis. Cells expressing genetically encoded acetylation-defective EB1 showed spindle misorientation. |
In vitro crotonylation assay, genetically encoded crotonylated EB1, live-cell imaging of chromosome movements |
Nature chemical biology |
High |
34608293
|
| 2018 |
The NuA4/TIP60 complex architecture was resolved by cryo-EM at 4.7 Å (TEEAA assembly) and 7.6 Å (with piccolo); Tra1 and Eaf1 form the assembly scaffold, Eaf1 SANT domain binds Tra1 LBE and FATC domains by ionic interactions, and actin/Arp4 peripherally associate with Eaf1 HSA domain. |
Cryo-electron microscopy structure determination of S. cerevisiae NuA4 assemblies |
Nature communications |
High |
29559617
|
| 2024 |
Cryo-EM structures of the human NuA4/TIP60 complex show EP400 as the scaffold integrating motor, ARP, and TRRAP modules; TRRAP loss leads to mislocalization of NuA4/TIP60 and redistribution of H2A.Z and its acetylation across the genome, demonstrating TRRAP's role in chromatin targeting. |
Cryo-EM structure determination, TRRAP knockout with ChIP-seq for H2A.Z and acetyl-H2A.Z |
Science |
High |
39088653
|
| 2024 |
Cryo-EM structure of endogenous human TIP60-C (TIP60-EP400 complex) reveals a three-lobed architecture; EP400 contains the ATPase motor, traverses the SWR1-like/NuA4-like junction twice, and TRRAP is flexibly tethered to NuA4L with a fixed actin module, diverging from yeast SWR1. |
Cryo-EM structure of endogenous human TIP60-EP400 complex, functional histone exchange activity assays |
Nature |
High |
39260417
|
| 2024 |
Cryo-EM structures of human TIP60 core subcomplex show EP400 as a backbone integrating motor, ARP, and TRRAP modules; RUVBL1-RUVBL2 hexamer serves as a rigid core; ACTL6A-ACTB heterodimer plus extra ACTL6A make hydrophobic contacts with EP400 HSA helix, and the nucleosome is found in an unengaged state between the core and TRRAP module. |
Cryo-EM at 3.2-Å resolution of human TIP60 complex |
Nature communications |
High |
39154037
|
| 2003 |
Yeast Epl1 (ortholog of human EPC1/EPC2), a NuA4 subunit, forms the piccolo NuA4 complex (Esa1-Epl1-Yng2) that preferentially acetylates chromatin over free histones; Epl1 N-terminal domain bridges Esa1 and Yng2 together, directly stimulating Esa1 catalytic activity. |
Complex reconstitution, in vitro HAT assays with chromatin vs. free histones, genetic depletion with cell-cycle phenotype analysis |
Genes & development |
High |
12782659
|
| 2020 |
KAT5 acetylates cGAS at multiple lysine residues in its N-terminal domain, promoting cGAS's DNA-binding ability and enhancing innate immune signaling in response to cytosolic DNA; Kat5-inactivated mice showed lower serum cytokines, higher viral titers, and increased susceptibility to DNA-virus-induced death. |
Overexpression and KO studies, in vitro acetyltransferase assay, DNA-binding assays, in vivo mouse infection model |
PNAS |
High |
32817552
|
| 2010 |
Tip60 (KAT5) binds ATM and activates its kinase activity; Tip60's chromodomain interacts with histone H3 trimethylated at Lys9 (H3K9me3) at DSBs, which stimulates Tip60 acetyltransferase activity and leads to acetylation and activation of ATM. NOTCH1 was shown to prevent FOXO3a and KAT5/Tip60 binding to ATM by competing with FOXO3a. |
Co-immunoprecipitation, chromodomain-H3K9me3 binding assays, ATM kinase activation assays, reporter assays |
Cell cycle |
High |
20160506 27524627
|
| 2018 |
Tip60 acetylation of lipin 1 promotes its translocation to the endoplasmic reticulum, where it functions as a phosphatidic acid phosphatase to generate diacylglycerol for triacylglycerol synthesis; Tip60(SA/SA) knock-in mice show reduced body fat and impaired milk TAG production. GSK3-mediated phosphorylation of Tip60 at Ser86 is required for this function; Sirt1 deacetylates lipin 1 to repress this pathway. |
Knock-in mouse model, in vitro acetyltransferase assay for lipin 1, subcellular fractionation/ER translocation, Sirt1 deacetylation assay, S. cerevisiae genetic validation |
Nature communications |
High |
29765047
|
| 2009 |
Sirt1 physically interacts with Tip60 and negatively regulates Tip60-mediated acetylation of H2AX; Sirt1 deacetylates acetylated Tip60 and promotes proteasome-dependent Tip60 degradation, thereby suppressing excessive DNA damage response and Rad51-mediated homologous recombination repair. |
Co-immunoprecipitation, in vitro deacetylation assay, RNAi knockdown with DNA repair foci analysis |
Biochemical and biophysical research communications |
Medium |
19895790
|
| 2014 |
HDAC3 interacts with Tip60 and deacetylates its autoacetylation sites (six identified lysine residues); unlike Sirt1, HDAC3 stabilizes rather than degrades Tip60 and co-localizes with it in nucleus and cytoplasm. Both Sirt1 and HDAC3 deacetylation of Tip60 reduces DNA-damage-induced apoptosis. |
Co-immunoprecipitation, mutagenesis of autoacetylation sites, ubiquitination assays, half-life measurements |
Journal of Biological Chemistry |
Medium |
25301942
|
| 2008 |
ATF2, in cooperation with Cul3 ubiquitin ligase, promotes proteasomal degradation of TIP60 under non-stressed conditions, attenuating its HAT activity; ionizing radiation decreases ATF2 association with TIP60 on chromatin, stabilizing TIP60 and increasing ATM activation. |
siRNA knockdown, co-immunoprecipitation, protein half-life measurements, ATM kinase activity assays |
Journal of Biological Chemistry |
Medium |
18397884
|
| 2015 |
ATF3 directly binds TIP60 adjacent to its catalytic domain, promoting TIP60 acetyltransferase activity and stabilizing TIP60 by promoting USP7-mediated deubiquitination; ATF3 knockdown reduces TIP60 expression and suppresses ATM signaling. |
Co-immunoprecipitation, in vitro HAT activity assay, deubiquitination assay with USP7, siRNA knockdown with DNA damage readouts |
Nature communications |
Medium |
25865756
|
| 2016 |
ER stress activates GSK3β which phosphorylates TIP60, triggering TIP60-mediated acetylation of ULK1 to induce autophagy; inhibition of either GSK3β or TIP60 significantly attenuates ER-stress-induced autophagy, and TIP60 overexpression reduces ER-stress-induced CHOP and cell death. |
Pharmacological inhibition of GSK3β, dominant-negative and phosphorylation-defective TIP60 mutants, autophagy flux assays |
Cell death & disease |
Medium |
28032867
|
| 2019 |
Tip60 acetylates MARCKS at lysine 165, which is a prerequisite for subsequent MARCKS phosphorylation by PKC; SIRT2 deacetylates MARCKS to counteract this. Phosphorylated MARCKS dissociates from organelles, leading to mitochondrial dysfunction and ER stress causing neural tube defects under diabetic conditions. |
In vitro acetyltransferase assay, phosphorylation-dead MARCKS knock-in, SIRT2 overexpression in developing neuroepithelium, organelle stress measurements |
Nature communications |
High |
30655546
|
| 2015 |
KAT5 (Tip60) acetyltransferase is responsible for acetylation and activation of ATM in response to formaldehyde-induced chromatin damage during S-phase; this KAT5-ATM axis is specifically important for the intra-S-phase checkpoint and recovery from low-dose formaldehyde-induced DNA-protein crosslinks. |
siRNA knockdown of KAT5, ATM acetylation assays, intra-S-phase checkpoint readouts, cell recovery assays |
Nucleic acids research |
Medium |
26420831
|
| 2008 |
Tip60 directly interacts with the Fanconi anemia protein FANCD2 (confirmed by yeast two-hybrid, co-immunoprecipitation, and co-localization); Tip60 depletion reduces cellular survival after DNA interstrand cross-link damage; Tip60 depletion does not reduce FANCD2 monoubiquitination or nuclear focus formation, placing Tip60 downstream or in a parallel branch of the Fanconi anemia repair pathway. |
Yeast two-hybrid, co-immunoprecipitation, co-localization, siRNA knockdown with mitomycin C sensitivity assay |
Journal of Biological Chemistry |
Medium |
18263878
|
| 2001 |
PLIP, a splice variant of KAT5/Tip60, physically interacts with the N-terminal region of cPLA2 and co-localizes with cPLA2 in the nucleus; PLIP expression potentiates cPLA2-mediated prostaglandin E2 production and apoptosis in mesangial cells in a cPLA2-dependent manner. |
Co-immunoprecipitation, co-localization by fluorescence microscopy, adenoviral gene transfer in cPLA2+/+ vs. cPLA2-/- cells |
Molecular and cellular biology |
Medium |
11416127
|
| 2018 |
KAT5 acts as an adaptor to recruit TRIB3, which then recruits KAT5 to SMAD3 to induce phosphorylation-dependent acetylation of SMAD3 at K333, sustaining SMAD3 transcriptional activity and TRIB3 expression; metformin disrupts this KAT5/SMAD3 interaction to suppress the feedback loop. |
Co-immunoprecipitation, in vitro acetyltransferase assay, mutagenesis of K333, luciferase reporter for SMAD3 activity, in vivo mouse tumor models |
Oncogene |
Medium |
29520103
|
| 2018 |
KAT5 promotes HIV-1 latency by acetylating H4 at the proviral LTR; elevated AcH4 recruits Brd4, which suppresses Tat-SEC interaction required for productive HIV transcription. KAT5 antagonism removes AcH4 and Brd4 from the LTR and reverses latency, validated in primary CD4+ T cell latency models. |
ChIP for AcH4 and Brd4 at HIV LTR, KAT5 KO/OE, primary cell latency model, patient ART-treated cells |
PLoS pathogens |
Medium |
29684085
|
| 2017 |
TIP60 acetylates Sp1 at K639, inhibiting Sp1 binding to the TERT promoter and repressing TERT transcription; this mechanism underlies TIP60-mediated growth suppression in HPV-infected cervical cancer cells. |
ChIP, in vitro acetyltransferase assay for Sp1, mass spectrometry identification of K639 acetylation, expression analysis |
PLoS pathogens |
Medium |
29045464
|
| 2021 |
Tip60 deletion in hematopoietic stem cells (HSCs) impairs self-renewal and maintenance in a manner dependent on its acetyltransferase activity; Tip60 co-localizes with c-Myc and is required for expression of Myc target genes, associated with H2A.Z acetylation at active chromatin loci. |
Conditional knockout mouse model, genome-wide ChIP-seq for acH2A.Z, RNA-seq, acetyltransferase-dead rescue experiments |
Blood |
High |
32542325
|
| 2017 |
KAT-independent function of Tip60 is sufficient for ESC self-renewal and maintenance, while KAT-dependent function is required for differentiation into mesoderm and endoderm; KAT-deficient ESCs show minimal transcriptional or chromatin accessibility changes at Tip60-binding sites but exhibit post-implantation developmental defects in vivo. |
Catalytic-dead Tip60 mutant in ESCs, Tip60 depletion, gene expression profiling, chromatin accessibility assays, mouse embryo analysis |
Cell reports |
High |
28445719
|
| 2022 |
Tip60 acetyltransferase activity is essential for neuronal fate specification via acetylation of H2A.Z; loss of Tip60 or acetyl-H2A.Z impairs H3K4me3 deposition and activation of bivalent chromatin-marked lineage-restricted genes, demonstrating that acetyl-H2A.Z regulates epigenetic competence for bivalent gene activation during neuronal differentiation. |
Proteomics to identify Tip60 in neuronal fate induction, Tip60 KO and H2A.Z acetylation-defective mutants, ChIP-seq for H3K4me3 and chromatin accessibility, direct neuronal conversion assays |
Molecular cell |
High |
36417913
|
| 2018 |
CDK9 phosphorylates TIP60 at Ser90, which is required for TIP60 interaction with chromatin, histone H3, and RNA Pol II; phosphorylation-deficient TIP60(S90A) shows reduced association with the MYC gene, reduced H4 acetylation, and decreased cell proliferation. Separately, GSK3-mediated Ser86 phosphorylation (primed by S90-p) regulates HAT activity specifically. |
Kinase assays, Co-IP of TIP60 with chromatin components, ChIP at MYC gene, proliferation assays with phospho-deficient mutants |
EMBO reports |
Medium |
29335245
|
| 2016 |
NOTCH1 prevents FOXO3a and KAT5/Tip60 from binding to ATM by competing with FOXO3a for ATM binding; loss of FOXO3a binding to ATM leads to loss of KAT5/Tip60 association with ATM and impaired ATM activation. Expression of NOTCH1 or depletion of ATM impairs the FOXO3a-KAT5/Tip60 protein complex. |
Co-immunoprecipitation, competition binding assays, cell-death assays with pharmacological FOXO3a nuclear induction |
Cell reports |
Medium |
27524627
|
| 2006 |
Tip60 and p400 (both in the Tip60 complex) are required for UV-induced apoptosis; p400 represses p21 expression in unstressed cells by inhibiting Tip60 function, a property abolished following DNA damage; Tip60 favors expression of proapoptotic p53 target genes by stimulating p53 DNA-binding activity. |
siRNA knockdown of Tip60 and p400, reporter assays for p53 target genes, cell-cycle and apoptosis analysis |
EMBO journal |
Medium |
16601686
|
| 2019 |
Yeast Esa1 (KAT5 ortholog) and Gcn5 function as bona fide histone crotonyltransferases; the Esa1-Yng2-Epl1 (piccolo NuA4) complex crotonylates H4 lysines in vitro, and crotonylation selectively affects gene transcription in vivo in an Esa1-dependent manner. |
In vitro crotonyltransferase assay with piccolo NuA4, mass spectrometry identification of crotonylation sites, in vivo transcriptional analysis in esa1 mutants |
Journal of Biological Chemistry |
Medium |
31699900
|
| 2012 |
Tip60 functions as an androgen receptor (AR) coactivator by acetylating lysine residues within the KLKK motif of the AR hinge region, promoting AR nuclear localization; Tip60 knockdown induces AR translocation to the cytoplasm, and acetylation-mimicking mutations in the AR NLS caused nuclear localization even without androgen. |
Luciferase reporter assay, Western blotting, fluorescence microscopy, siRNA knockdown, cell proliferation and cell-cycle analysis |
The Prostate / PLoS one |
Medium |
19938016 23056207
|
| 2019 |
O-GlcNAcylation of KAT5 (promoted by PCK1 depletion) suppresses KAT5 ubiquitination, stabilizing KAT5; stabilized KAT5 epigenetically activates TWIST1 via H4 acetylation and enhances MMP9/MMP14 expression via c-Myc acetylation, promoting EMT and HCC metastasis. |
Gain/loss-of-function studies, co-immunoprecipitation, in vitro acetyltransferase assay, ubiquitination assays, ChIP, in vivo lung metastasis model |
Oncogene |
Medium |
34650217
|
| 2011 |
GPR50 physically interacts with TIP60 (identified by yeast two-hybrid, confirmed by Co-IP and co-localization); co-expression with TIP60 increases perinuclear localization of GPR50 and enables nuclear translocation of GPR50 cytoplasmic tail; GPR50 enhances TIP60 co-activation of glucocorticoid receptor signaling, demonstrated in vivo in Gpr50-/- mice. |
Yeast two-hybrid, Co-IP, co-localization microscopy, glucocorticoid receptor reporter assay, Gpr50 knockout mouse |
PLoS one |
Medium |
21858214
|
| 2007 |
Rev-erbbeta recruits Tip60 to the apoCIII promoter; Tip60 acetylates Rev-erbbeta, relieving its transcriptional repression of apoCIII. This de-repression depends specifically on acetylation of the RXKK motif of Rev-erbbeta. HDAC1 is also recruited by Rev-erbbeta to antagonize Tip60 activity at this promoter. |
Co-immunoprecipitation, ChIP, in vitro acetyltransferase assay, reporter assay with acetylation-site mutants |
Biochimica et biophysica acta |
Medium |
17996965
|
| 2013 |
ZNF668 promotes Tip60-H2AX interaction in response to ionizing radiation, enabling IR-induced H2AX hyperacetylation and chromatin relaxation; ZNF668 knockdown reduces Tip60-H2AX interaction, impairs homologous recombination repair, and decreases cell survival after IR. |
Co-immunoprecipitation of Tip60 and H2AX in ZNF668-depleted cells, DNA repair foci analysis, HR repair assay |
Cell cycle |
Medium |
23777805
|
| 2021 |
LINC00839 lncRNA recruits RUVBL1 to the Tip60 complex and increases its acetyltransferase activity; LINC00839 guides the complex to the NRF1 promoter, promoting acetylation of H4K5 and H4K8, thereby upregulating NRF1 expression and mitochondrial metabolism in colorectal cancer. |
Co-immunoprecipitation, ChIP for H4 acetylation at NRF1 promoter, in vitro and in vivo CRC proliferation/invasion assays |
EMBO reports |
Medium |
35876654
|
| 2020 |
De novo heterozygous missense variants in KAT5 (at chromodomain p.Arg53His, and acetyl-CoA binding site p.Cys369Ser, p.Ser413Ala) cause a neurodevelopmental syndrome; purified variant KAT5 proteins fail to support NuA4/TIP60 complex acetylation of histone H4 in chromatin, demonstrating that loss of acetyltransferase activity drives the disease phenotype. |
In vitro histone acetylation assay with purified variant complexes, transcriptomic analysis of patient fibroblasts, PER1 expression analysis |
American journal of human genetics |
High |
32822602
|
| 2008 |
The Esa1 chromodomain has an unusual knotted tudor domain structure (NMR solution structure); this knotted tudor domain binds poly(U) RNA, and mutations in the RNA-binding region are lethal in yeast, indicating that RNA binding via this domain is essential for Esa1 function in vivo. |
NMR structure determination, RNA binding assays, systematic alanine-scanning mutagenesis in yeast |
Journal of molecular biology |
Medium |
18407291
|
| 2016 |
Tip60 knockdown in glioblastoma cells promotes MT1-MMP transcription and invasion via NF-κB activation; Tip60 thus suppresses NF-κB-mediated MT1-MMP expression to inhibit glioblastoma cell adhesion and invasion. |
siRNA knockdown, qRT-PCR, invasion assays, NF-κB inhibitor rescue |
Clinical & experimental metastasis |
Low |
26464124
|
| 2019 |
In Piccolo NuA4, a loop within the Esa1 Tudor domain and a short basic region at the N-terminus of Epl1 EPcA domain are necessary for acetylation of nucleosomal histones but not for nucleosome binding; the Tudor loop is near nucleosomal DNA and the Epl1 basic region contacts the H2A tail and globular H4, suggesting they function post-binding to disengage substrate histone tails. |
Mutagenesis, crosslinking/proximity assays, nucleosome binding vs. acetylation assays with piccolo NuA4 |
Molecular and cellular biology |
Medium |
23109429
|
| 2021 |
In Drosophila, the Tip60 complex and its interaction partner Myc regulate genes required for neuroblast maintenance; knockdown of Tip60 complex members results in loss of cortical polarity, symmetric neuroblast division, and premature differentiation via nuclear entry of Prospero; aPKC is the key target gene co-regulated by Myc and the Tip60 complex subunit Domino. |
RNAi knockdown, transcriptome analysis, live-cell imaging of neuroblast divisions, genetic rescue with aPKC overexpression |
EMBO journal |
Medium |
29997178
|