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Open data
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Basic information
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Title | CAND1-CUL1-RBX1-DCNL1 | |||||||||||||||
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![]() | CAND1 / substrate receptor exchange factor / cullin-RING ligase / CRL / SCF / ligase / neddylation / DCNL1 co-E3 / ubiquitin signaling | |||||||||||||||
Function / homology | ![]() positive regulation of protein neddylation / SCF complex assembly / ubiquitin-like protein binding / Parkin-FBXW7-Cul1 ubiquitin ligase complex / negative regulation of catalytic activity / regulation of protein neddylation / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / cullin-RING ubiquitin ligase complex / cellular response to chemical stress ...positive regulation of protein neddylation / SCF complex assembly / ubiquitin-like protein binding / Parkin-FBXW7-Cul1 ubiquitin ligase complex / negative regulation of catalytic activity / regulation of protein neddylation / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / cullin-RING ubiquitin ligase complex / cellular response to chemical stress / Cul7-RING ubiquitin ligase complex / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / positive regulation of protein autoubiquitination / protein neddylation / ubiquitin conjugating enzyme binding / NEDD8 ligase activity / Cul5-RING ubiquitin ligase complex / negative regulation of response to oxidative stress / SCF ubiquitin ligase complex / Cul2-RING ubiquitin ligase complex / Cul4A-RING E3 ubiquitin ligase complex / ubiquitin-ubiquitin ligase activity / negative regulation of type I interferon production / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Cul3-RING ubiquitin ligase complex / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / Prolactin receptor signaling / cullin family protein binding / positive regulation of RNA polymerase II transcription preinitiation complex assembly / protein monoubiquitination / regulation of protein ubiquitination / ubiquitin ligase complex / protein K48-linked ubiquitination / Nuclear events stimulated by ALK signaling in cancer / TBP-class protein binding / positive regulation of TORC1 signaling / regulation of cellular response to insulin stimulus / post-translational protein modification / intrinsic apoptotic signaling pathway / Regulation of BACH1 activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / animal organ morphogenesis / T cell activation / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / Degradation of DVL / Dectin-1 mediated noncanonical NF-kB signaling / cellular response to amino acid stimulus / Activation of NF-kappaB in B cells / Degradation of GLI1 by the proteasome / Recognition of DNA damage by PCNA-containing replication complex / Negative regulation of NOTCH4 signaling / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Iron uptake and transport / Vif-mediated degradation of APOBEC3G / Hedgehog 'on' state / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / negative regulation of canonical Wnt signaling pathway / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / DNA Damage Recognition in GG-NER / Degradation of beta-catenin by the destruction complex / RING-type E3 ubiquitin transferase / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / Evasion by RSV of host interferon responses / Dual Incision in GG-NER / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / NOTCH1 Intracellular Domain Regulates Transcription / CLEC7A (Dectin-1) signaling / Formation of TC-NER Pre-Incision Complex / SCF(Skp2)-mediated degradation of p27/p21 / Regulation of expression of SLITs and ROBOs / FCERI mediated NF-kB activation / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / Formation of Incision Complex in GG-NER / G1/S transition of mitotic cell cycle / Interleukin-1 signaling / Orc1 removal from chromatin / Dual incision in TC-NER / Regulation of RAS by GAPs / Gap-filling DNA repair synthesis and ligation in TC-NER / protein polyubiquitination / positive regulation of protein catabolic process / Regulation of RUNX2 expression and activity / Cyclin D associated events in G1 / cellular response to UV / MAPK cascade / KEAP1-NFE2L2 pathway / ubiquitin protein ligase activity / Regulation of PLK1 Activity at G2/M Transition / : / Antigen processing: Ubiquitination & Proteasome degradation / Downstream TCR signaling / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / Neddylation / ubiquitin-dependent protein catabolic process / cellular response to oxidative stress Similarity search - Function | |||||||||||||||
Biological species | ![]() | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.2 Å | |||||||||||||||
![]() | Shaaban M / Clapperton JA / Ding S / Maeots ME / Enchev RI / Maslen SL / Skehel JM | |||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural and mechanistic insights into the CAND1-mediated SCF substrate receptor exchange. Authors: Mohammed Shaaban / Julie A Clapperton / Shan Ding / Simone Kunzelmann / Märt-Erik Mäeots / Sarah L Maslen / J Mark Skehel / Radoslav I Enchev / ![]() Abstract: Modular SCF (SKP1-CUL1-Fbox) ubiquitin E3 ligases orchestrate multiple cellular pathways in eukaryotes. Their variable SKP1-Fbox substrate receptor (SR) modules enable regulated substrate recruitment ...Modular SCF (SKP1-CUL1-Fbox) ubiquitin E3 ligases orchestrate multiple cellular pathways in eukaryotes. Their variable SKP1-Fbox substrate receptor (SR) modules enable regulated substrate recruitment and subsequent proteasomal degradation. CAND proteins are essential for the efficient and timely exchange of SRs. To gain structural understanding of the underlying molecular mechanism, we reconstituted a human CAND1-driven exchange reaction of substrate-bound SCF alongside its co-E3 ligase DCNL1 and visualized it by cryo-EM. We describe high-resolution structural intermediates, including a ternary CAND1-SCF complex, as well as conformational and compositional intermediates representing SR- or CAND1-dissociation. We describe in molecular detail how CAND1-induced conformational changes in CUL1/RBX1 provide an optimized DCNL1-binding site and reveal an unexpected dual role for DCNL1 in CAND1-SCF dynamics. Moreover, a partially dissociated CAND1-SCF conformation accommodates cullin neddylation, leading to CAND1 displacement. Our structural findings, together with functional biochemical assays, help formulate a detailed model for CAND-SCF regulation. | |||||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 110.8 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 21 KB 21 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 11.3 KB | Display | ![]() |
Images | ![]() | 123.2 KB | ||
Filedesc metadata | ![]() | 7.4 KB | ||
Others | ![]() ![]() | 98.4 MB 98.4 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 660.7 KB | Display | ![]() |
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Full document | ![]() | 660.2 KB | Display | |
Data in XML | ![]() | 18.5 KB | Display | |
Data in CIF | ![]() | 24.3 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8or2MC ![]() 8or0C ![]() 8or3C ![]() 8or4C M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.08 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_17115_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_17115_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : CAND1-CUL1-RBX1-DCNL1
Entire | Name: CAND1-CUL1-RBX1-DCNL1 |
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Components |
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-Supramolecule #1: CAND1-CUL1-RBX1-DCNL1
Supramolecule | Name: CAND1-CUL1-RBX1-DCNL1 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4 |
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Source (natural) | Organism: ![]() |
-Macromolecule #1: Cullin-1
Macromolecule | Name: Cullin-1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 93.730672 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MWSHPQFEKG SAGSAAGSGA GWSHPQFEKL EVLFQGPMSS TRSQNPHGLK QIGLDQIWDD LRAGIQQVYT RQSMAKSRYM ELYTHVYNY CTSVHQSNQA RGAGVPPSKS KKGQTPGGAQ FVGLELYKRL KEFLKNYLTN LLKDGEDLMD ESVLKFYTQQ W EDYRFSSK ...String: MWSHPQFEKG SAGSAAGSGA GWSHPQFEKL EVLFQGPMSS TRSQNPHGLK QIGLDQIWDD LRAGIQQVYT RQSMAKSRYM ELYTHVYNY CTSVHQSNQA RGAGVPPSKS KKGQTPGGAQ FVGLELYKRL KEFLKNYLTN LLKDGEDLMD ESVLKFYTQQ W EDYRFSSK VLNGICAYLN RHWVRRECDE GRKGIYEIYS LALVTWRDCL FRPLNKQVTN AVLKLIEKER NGETINTRLI SG VVQSYVE LGLNEDDAFA KGPTLTVYKE SFESQFLADT ERFYTRESTE FLQQNPVTEY MKKAEARLLE EQRRVQVYLH EST QDELAR KCEQVLIEKH LEIFHTEFQN LLDADKNEDL GRMYNLVSRI QDGLGELKKL LETHIHNQGL AAIEKCGEAA LNDP KMYVQ TVLDVHKKYN ALVMSAFNND AGFVAALDKA CGRFINNNAV TKMAQSSSKS PELLARYCDS LLKKSSKNPE EAELE DTLN QVMVVFKYIE DKDVFQKFYA KMLAKRLVHQ NSASDDAEAS MISKLKQACG FEYTSKLQRM FQDIGVSKDL NEQFKK HLT NSEPLDLDFS IQVLSSGSWP FQQSCTFALP SELERSYQRF TAFYASRHSG RKLTWLYQLS KGELVTNCFK NRYTLQA ST FQMAILLQYN TEDAYTVQQL TDSTQIKMDI LAQVLQILLK SKLLVLEDEN ANVDEVELKP DTLIKLYLGY KNKKLRVN I NVPMKTEQKQ EQETTHKNIE EDRKLLIQAA IVRIMKMRKV LKHQQLLGEV LTQLSSRFKP RVPVIKKCID ILIEKEYLE RVDGEKDTYS YLA UniProtKB: Cullin-1 |
-Macromolecule #2: E3 ubiquitin-protein ligase RBX1
Macromolecule | Name: E3 ubiquitin-protein ligase RBX1 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO / EC number: RING-type E3 ubiquitin transferase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 12.289977 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MAAAMDVDTP SGTNSGAGKK RFEVKKWNAV ALWAWDIVVD NCAICRNHIM DLCIECQANQ ASATSEECTV AWGVCNHAFH FHCISRWLK TRQVCPLDNR EWEFQKYGH UniProtKB: E3 ubiquitin-protein ligase RBX1 |
-Macromolecule #3: Cullin-associated NEDD8-dissociated protein 1
Macromolecule | Name: Cullin-associated NEDD8-dissociated protein 1 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 137.358219 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GSPEFPGRMA SASYHISNLL EKMTSSDKDF RFMATNDLMT ELQKDSIKLD DDSERKVVKM ILKLLEDKNG EVQNLAVKCL GPLVSKVKE YQVETIVDTL CTNMLSDKEQ LRDISSIGLK TVIGELPPAS SGSALAANVC KKITGRLTSA IAKQEDVSVQ L EALDIMAD ...String: GSPEFPGRMA SASYHISNLL EKMTSSDKDF RFMATNDLMT ELQKDSIKLD DDSERKVVKM ILKLLEDKNG EVQNLAVKCL GPLVSKVKE YQVETIVDTL CTNMLSDKEQ LRDISSIGLK TVIGELPPAS SGSALAANVC KKITGRLTSA IAKQEDVSVQ L EALDIMAD MLSRQGGLLV NFHPSILTCL LPQLTSPRLA VRKRTIIALG HLVMSCGNIV FVDLIEHLLS ELSKNDSMST TR TYIQCIA AISRQAGHRI GEYLEKIIPL VVKFCNVDDD ELREYCIQAF ESFVRRCPKE VYPHVSTIIN ICLKYLTYDP NYN YDDEDE DENAMDADGG DDDDQGSDDE YSDDDDMSWK VRRAAAKCLD AVVSTRHEML PEFYKTVSPA LISRFKEREE NVKA DVFHA YLSLLKQTRP VQSWLCDPDA MEQGETPLTM LQSQVPNIVK ALHKQMKEKS VKTRQCCFNM LTELVNVLPG ALTQH IPVL VPGIIFSLND KSSSSNLKID ALSCLYVILC NHSPQVFHPH VQALVPPVVA CVGDPFYKIT SEALLVTQQL VKVIRP LDQ PSSFDATPYI KDLFTCTIKR LKAADIDQEV KERAISCMGQ IICNLGDNLG SDLPNTLQIF LERLKNEITR LTTVKAL TL IAGSPLKIDL RPVLGEGVPI LASFLRKNQR ALKLGTLSAL DILIKNYSDS LTAAMIDAVL DELPPLISES DMHVSQMA I SFLTTLAKVY PSSLSKISGS ILNELIGLVR SPLLQGGALS AMLDFFQALV VTGTNNLGYM DLLRMLTGPV YSQSTALTH KQSYYSIAKC VAALTRACPK EGPAVVGQFI QDVKNSRSTD SIRLLALLSL GEVGHHIDLS GQLELKSVIL EAFSSPSEEV KSAASYALG SISVGNLPEY LPFVLQEITS QPKRQYLLLH SLKEIISSAS VVGLKPYVEN IWALLLKHCE CAEEGTRNVV A ECLGKLTL IDPETLLPRL KGYLISGSSY ARSSVVTAVK FTISDHPQPI DPLLKNCIGD FLKTLEDPDL NVRRVALVTF NS AAHNKPS LIRDLLDTVL PHLYNETKVR KELIREVEMG PFKHTVDDGL DIRKAAFECM YTLLDSCLDR LDIFEFLNHV EDG LKDHYD IKMLTFLMLV RLSTLCPSAV LQRLDRLVEP LRATCTTKVK ANSVKQEFEK QDELKRSAMR AVAALLTIPE AEKS PLMSE FQSQISSNPE LAAIFESIQK DSSSTNLESM DTS UniProtKB: Cullin-associated NEDD8-dissociated protein 1 |
-Macromolecule #4: DCN1-like protein 1
Macromolecule | Name: DCN1-like protein 1 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 30.304439 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GSMNKLKSSQ KDKVRQFMIF TQSSEKTAVS CLSQNDWKLD VATDNFFQNP ELYIRESVKG SLDRKKLEQL YNRYKDPQDE NKIGIDGIQ QFCDDLALDP ASISVLIIAW KFRAATQCEF SKQEFMDGMT ELGCDSIEKL KAQIPKMEQE LKEPGRFKDF Y QFTFNFAK ...String: GSMNKLKSSQ KDKVRQFMIF TQSSEKTAVS CLSQNDWKLD VATDNFFQNP ELYIRESVKG SLDRKKLEQL YNRYKDPQDE NKIGIDGIQ QFCDDLALDP ASISVLIIAW KFRAATQCEF SKQEFMDGMT ELGCDSIEKL KAQIPKMEQE LKEPGRFKDF Y QFTFNFAK NPGQKGLDLE MAIAYWNLVL NGRFKFLDLW NKFLLEHHKR SIPKDTWNLL LDFSTMIADD MSNYDEEGAW PV LIDDFVE FARPQIAGTK STTV UniProtKB: DCN1-like protein 1 |
-Macromolecule #5: ZINC ION
Macromolecule | Name: ZINC ION / type: ligand / ID: 5 / Number of copies: 3 / Formula: ZN |
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Molecular weight | Theoretical: 65.409 Da |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 Component:
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Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV | ||||||||||
Details | CAND1-CUL1-RBX1-SKP1-SKP2-CKS1-CDK2-CyclinE-DCNL1 |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 49.1 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.7000000000000001 µm / Nominal magnification: 130000 |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |