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Yorodumi- EMDB-54549: Ternary complex structure of compound 1 bound to SMARCA2 bromodom... -
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Basic information
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| Title | Ternary complex structure of compound 1 bound to SMARCA2 bromodomain and DCAF16:DDB1deltaBPB | |||||||||||||||||||||||||||||||||||||||
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Keywords | Protein complex / covalent degrader / targeted protein degradation / TRANSCRIPTION / E3 ligase | |||||||||||||||||||||||||||||||||||||||
| Function / homology | Function and homology informationnBAF complex / npBAF complex / Formation of the canonical BAF (cBAF) complex / Formation of the polybromo-BAF (pBAF) complex / Formation of neuronal progenitor and neuronal BAF (npBAF and nBAF) / Formation of the non-canonical BAF (ncBAF) complex / nucleosome array spacer activity / regulation of G0 to G1 transition / positive regulation by virus of viral protein levels in host cell / SWI/SNF complex ...nBAF complex / npBAF complex / Formation of the canonical BAF (cBAF) complex / Formation of the polybromo-BAF (pBAF) complex / Formation of neuronal progenitor and neuronal BAF (npBAF and nBAF) / Formation of the non-canonical BAF (ncBAF) complex / nucleosome array spacer activity / regulation of G0 to G1 transition / positive regulation by virus of viral protein levels in host cell / SWI/SNF complex / spindle assembly involved in female meiosis / epigenetic programming in the zygotic pronuclei / UV-damage excision repair / regulation of mitotic metaphase/anaphase transition / positive regulation of T cell differentiation / biological process involved in interaction with symbiont / regulation of nucleotide-excision repair / regulation of mitotic cytokinesis / regulation of mitotic cell cycle phase transition / regulation of miRNA-mediated gene silencing / regulation of natural killer cell activation / WD40-repeat domain binding / positive regulation of stem cell population maintenance / regulation of cell cycle phase transition / Cul4A-RING E3 ubiquitin ligase complex / Cul4-RING E3 ubiquitin ligase complex / regulation of stem cell population maintenance / Cul4B-RING E3 ubiquitin ligase complex / positive regulation of double-strand break repair / Regulation of MITF-M-dependent genes involved in pigmentation / negative regulation of cell differentiation / ubiquitin ligase complex scaffold activity / negative regulation of adipose tissue development / RUNX1 interacts with co-factors whose precise effect on RUNX1 targets is not known / regulation of cellular response to stress / viral release from host cell / cullin family protein binding / positive regulation of myoblast differentiation / ATP-dependent activity, acting on DNA / regulation of DNA-templated DNA replication initiation / positive regulation of viral genome replication / positive regulation of gluconeogenesis / regulation of G1/S transition of mitotic cell cycle / regulation of embryonic development / replication fork processing / helicase activity / positive regulation of cell differentiation / proteasomal protein catabolic process / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / epigenetic regulation of gene expression / negative regulation of cell growth / nucleotide-excision repair / regulation of autophagy / Recognition of DNA damage by PCNA-containing replication complex / regulation of circadian rhythm / cell population proliferation / DNA Damage Recognition in GG-NER / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / Dual Incision in GG-NER / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / protein polyubiquitination / Formation of Incision Complex in GG-NER / RMTs methylate histone arginines / positive regulation of protein catabolic process / cellular response to UV / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / rhythmic process / regulation of cell population proliferation / site of double-strand break / nervous system development / Neddylation / heterochromatin formation / spermatogenesis / ubiquitin-dependent protein catabolic process / histone binding / damaged DNA binding / proteasome-mediated ubiquitin-dependent protein catabolic process / regulation of apoptotic process / protein-macromolecule adaptor activity / chromosome, telomeric region / transcription coactivator activity / transcription cis-regulatory region binding / protein ubiquitination / chromatin remodeling / negative regulation of cell population proliferation / negative regulation of DNA-templated transcription / DNA repair / positive regulation of cell population proliferation / chromatin binding / regulation of transcription by RNA polymerase II / DNA damage response / nucleolus / regulation of DNA-templated transcription / positive regulation of DNA-templated transcription / protein-containing complex binding / chromatin / negative regulation of transcription by RNA polymerase II Similarity search - Function | |||||||||||||||||||||||||||||||||||||||
| Biological species | Homo sapiens (human) | |||||||||||||||||||||||||||||||||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | |||||||||||||||||||||||||||||||||||||||
Authors | Spiteri VA / Nakasone MA / Casement R / Iso K / Cowan AD / Ciulli A | |||||||||||||||||||||||||||||||||||||||
| Funding support | Japan, United Kingdom, European Union, Austria, Switzerland, Spain, 12 items
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Citation | Journal: Nat Chem Biol / Year: 2026Title: Dual E3 ligase recruitment by monovalent degraders for tunable SMARCA 2/4 degradation. Authors: Valentina A Spiteri / Dmitri Segal / Alejandro Correa-Sáez / Kentaro Iso / Ryan Casement / Miquel Muñoz I Ordoño / Mark A Nakasone / Gajanan Sathe / Caroline Schätz / Hannah E Peters / ...Authors: Valentina A Spiteri / Dmitri Segal / Alejandro Correa-Sáez / Kentaro Iso / Ryan Casement / Miquel Muñoz I Ordoño / Mark A Nakasone / Gajanan Sathe / Caroline Schätz / Hannah E Peters / Mark Doward / Lisa Kainacher / Angus D Cowan / Alessio Ciulli / Georg E Winter / ![]() Abstract: Proteolysis-targeting chimeras (PROTACs) and molecular glue degraders (MGDs) target proteins for degradation by co-opting an E3 ligase. While heterotrivalent PROTACs that can recruit multiple E3 ...Proteolysis-targeting chimeras (PROTACs) and molecular glue degraders (MGDs) target proteins for degradation by co-opting an E3 ligase. While heterotrivalent PROTACs that can recruit multiple E3 ligases have been described, all MGDs reported to date depend on a single E3. Using orthogonal genetic screening, biophysical and structural analyses, we show that a monovalent MGD can recruit CUL4 and CRL1 in parallel to degrade SMARCA2/4. Deep mutational scanning identifies C173 in DCAF16 as essential for degrader activity and intact protein mass spectrometry confirms covalent modification at this site. Elucidating the ternary complex structure reveals a unique binding mode and a distinct interface of neointeractions that underlie degrader specificity. We demonstrate that ligase dependency is chemically and genetically tunable. Minimal compound modifications shift preference from DCAF16 to FBXO22, while a single substitution boosts degrader dependency on DCAF16. These results establish a framework for designing tunable dual E3 ligase degraders to mitigate potential resistance mechanisms. | |||||||||||||||||||||||||||||||||||||||
| History |
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_54549.map.gz | 122.7 MB | EMDB map data format | |
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| Header (meta data) | emd-54549-v30.xml emd-54549.xml | 28.3 KB 28.3 KB | Display Display | EMDB header |
| Images | emd_54549.png | 132.5 KB | ||
| Filedesc metadata | emd-54549.cif.gz | 8.3 KB | ||
| Others | emd_54549_half_map_1.map.gz emd_54549_half_map_2.map.gz | 226.8 MB 226.8 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-54549 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-54549 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9s3rMC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_54549.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.03 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Half map: #2
| File | emd_54549_half_map_1.map | ||||||||||||
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| Density Histograms |
-Half map: #1
| File | emd_54549_half_map_2.map | ||||||||||||
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| Density Histograms |
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Sample components
-Entire : Ternary complex structure of compound 1 bound to SMARCA2 bromodom...
| Entire | Name: Ternary complex structure of compound 1 bound to SMARCA2 bromodomain and DCAF16:DDB1deltaBPB |
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| Components |
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-Supramolecule #1: Ternary complex structure of compound 1 bound to SMARCA2 bromodom...
| Supramolecule | Name: Ternary complex structure of compound 1 bound to SMARCA2 bromodomain and DCAF16:DDB1deltaBPB type: complex / ID: 1 / Parent: 0 / Macromolecule list: #4, #3, #1-#2 |
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| Source (natural) | Organism: Homo sapiens (human) |
-Macromolecule #1: DNA damage-binding protein 1
| Macromolecule | Name: DNA damage-binding protein 1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 127.097469 KDa |
| Recombinant expression | Organism: Trichoplusia ni (cabbage looper) |
| Sequence | String: MSYNYVVTAQ KPTAVNGCVT GHFTSAEDLN LLIAKNTRLE IYVVTAEGLR PVKEVGMYGK IAVMELFRPK GESKDLLFIL TAKYNACIL EYKQSGESID IITRAHGNVQ DRIGRPSETG IIGIIDPECR MIGLRLYDGL FKVIPLDRDN KELKAFNIRL E ELHVIDVK ...String: MSYNYVVTAQ KPTAVNGCVT GHFTSAEDLN LLIAKNTRLE IYVVTAEGLR PVKEVGMYGK IAVMELFRPK GESKDLLFIL TAKYNACIL EYKQSGESID IITRAHGNVQ DRIGRPSETG IIGIIDPECR MIGLRLYDGL FKVIPLDRDN KELKAFNIRL E ELHVIDVK FLYGCQAPTI CFVYQDPQGR HVKTYEVSLR EKEFNKGPWK QENVEAEASM VIAVPEPFGG AIIIGQESIT YH NGDKYLA IAPPIIKQST IVCHNRVDPN GSRYLLGDME GRLFMLLLEK EEQMDGTVTL KDLRVELLGE TSIAECLTYL DNG VVFVGS RLGDSQLVKL NVDSNEQGSY VVAMETFTNL GPIVDMCVVD LERQGQGQLV TCSGAFKEGS LRIIRNGIGI HEHA SIDLP GIKGLWPLRS DPNRETDDTL VLSFVGQTRV LMLNGEEVEE TELMGFVDDQ QTFFCGNVAH QQLIQITSAS VRLVS QEPK ALVSEWKEPQ AKNISVASCN SSQVVVAVGR ALYYLQIHPQ ELRQISHTEM EHEVACLDIT PLGDSNGLSP LCAIGL WTD ISARILKLPS FELLHKEMLG GEIIPRSILM TTFESSHYLL CALGDGALFY FGLNIETGLL SDRKKVTLGT QPTVLRT FR SLSTTNVFAC SDRPTVIYSS NHKLVFSNVN LKEVNYMCPL NSDGYPDSLA LANNSTLTIG TIDEIQKLHI RTVPLYES P RKICYQEVSQ CFGVLSSRIE VQDTSGGTTA LRPSASTQAL SSSVSSSKLF SSSTAPHETS FGEEVEVHNL LIIDQHTFE VLHAHQFLQN EYALSLVSCK LGKDPNTYFI VGTAMVYPEE AEPKQGRIVV FQYSDGKLQT VAEKEVKGAV YSMVEFNGKL LASINSTVR LYEWTTEKEL RTECNHYNNI MALYLKTKGD FILVGDLMRS VLLLAYKPME GNFEEIARDF NPNWMSAVEI L DDDNFLGA ENAFNLFVCQ KDSAATTDEE RQHLQEVGLF HLGEFVNVFC HGSLVMQNLG ETSTPTQGSV LFGTVNGMIG LV TSLSESW YNLLLDMQNR LNKVIKSVGK IEHSFWRSFH TERKTEPATG FIDGDLIESF LDISRPKMQE VVANLQYDDG SGM KREATA DDLIKVVEEL TRIH UniProtKB: DNA damage-binding protein 1 |
-Macromolecule #2: DDB1- and CUL4-associated factor 16
| Macromolecule | Name: DDB1- and CUL4-associated factor 16 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 24.333449 KDa |
| Recombinant expression | Organism: Trichoplusia ni (cabbage looper) |
| Sequence | String: GGMGPRNPSP DHLSESESEE EENISYLNES SGEEWDSSEE EDSMVPNLSP LESLAWQVKC LLKYSTTWKP LNPNSWLYHA KLLDPSTPV HILREIGLRL SHCSHCVPKL EPIPEWPPLA SCGVPPFQKP LTSPSRLSRD HATLNGALQF ATKQLSRTLS R ATPIPEYL ...String: GGMGPRNPSP DHLSESESEE EENISYLNES SGEEWDSSEE EDSMVPNLSP LESLAWQVKC LLKYSTTWKP LNPNSWLYHA KLLDPSTPV HILREIGLRL SHCSHCVPKL EPIPEWPPLA SCGVPPFQKP LTSPSRLSRD HATLNGALQF ATKQLSRTLS R ATPIPEYL KQIPNSCVSG CCCGWLTKTV KETTRTEPIN TTYSYTDFQK AVNKLLTASL UniProtKB: DDB1- and CUL4-associated factor 16 |
-Macromolecule #3: Probable global transcription activator SNF2L2
| Macromolecule | Name: Probable global transcription activator SNF2L2 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO EC number: Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 14.380542 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: SMAEKLSPNP PKLTKQMNAI IDTVINYKDS SGRQLSEVFI QLPSRKELPE YYELIRKPVD FKKIKERIRN HKYRSLGDLE KDVMLLCHN AQTFNLEGSQ IYEDSIVLQS VFKSARQKIA KEEE UniProtKB: SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 2 |
-Macromolecule #4: DET1- and DDB1-associated protein 1
| Macromolecule | Name: DET1- and DDB1-associated protein 1 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 11.855297 KDa |
| Recombinant expression | Organism: Trichoplusia ni (cabbage looper) |
| Sequence | String: MADFLKGLPV YNKSNFSRFH ADSVCKASNR RPSVYLPTRE YPSEQIIVTE KTNILLRYLH QQWDKKNAAK KRDQEQVELE GESSAPPRK VARTDSPDMH EDT UniProtKB: DET1- and DDB1-associated protein 1 |
-Macromolecule #5: ZINC ION
| Macromolecule | Name: ZINC ION / type: ligand / ID: 5 / Number of copies: 1 / Formula: ZN |
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| Molecular weight | Theoretical: 65.409 Da |
-Macromolecule #6: 2-[6-azanyl-5-[(1~{S},5~{R})-8-[2-[(~{E})-3-(azepan-1-yl)prop-1-e...
| Macromolecule | Name: 2-[6-azanyl-5-[(1~{S},5~{R})-8-[2-[(~{E})-3-(azepan-1-yl)prop-1-enyl]pyridin-4-yl]-3,8-diazabicyclo[3.2.1]octan-3-yl]pyridazin-3-yl]phenol type: ligand / ID: 6 / Number of copies: 1 / Formula: A1JLV |
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| Molecular weight | Theoretical: 511.661 Da |
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.5 Component:
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| Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. | |||||||||||||||
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV Details: Applied 3.5 uL of sample to grid. wait = 10 sec, drain = 0 sec, blot = 4 sec, blotForce = 4. | |||||||||||||||
| Details | Final complex component concentrations applied to the grid after incubation: 20 uM DCAF16:DDB1 (delta BPB): DDA1 50 uM SMARCA2 60 uM GNE58 |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Image recording | Film or detector model: TFS FALCON 4i (4k x 4k) / Average electron dose: 60.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.8000000000000003 µm / Nominal defocus min: 1.0 µm |
| Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi



Keywords
Homo sapiens (human)
Authors
Japan,
United Kingdom, European Union,
Austria,
Switzerland,
Spain, 12 items
Citation





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Trichoplusia ni (cabbage looper)
Processing
FIELD EMISSION GUN

