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- EMDB-47660: Cryo-EM structure of CSN-N8 in complex with CSN5i-3 -

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Basic information

Entry
Database: EMDB / ID: EMD-47660
TitleCryo-EM structure of CSN-N8 in complex with CSN5i-3
Map data
Sample
  • Complex: The complex of human COP9 signalosome with NEDD8 and CSN5i-3
    • Protein or peptide: x 9 types
  • Ligand: x 2 types
KeywordsCOP9 / COP9 signalosome / signalosome / NEDD8 / CSN5i-3 / deneddylation / CSN5 / metalloprotease / SIGNALING PROTEIN
Function / homology
Function and homology information


COP9 signalosome assembly / trophectodermal cell proliferation / macrophage migration inhibitory factor binding / regulation of IRE1-mediated unfolded protein response / exosomal secretion / GTPase inhibitor activity / deNEDDylase activity / protein deneddylation / regulation of protein neddylation / activation of NF-kappaB-inducing kinase activity ...COP9 signalosome assembly / trophectodermal cell proliferation / macrophage migration inhibitory factor binding / regulation of IRE1-mediated unfolded protein response / exosomal secretion / GTPase inhibitor activity / deNEDDylase activity / protein deneddylation / regulation of protein neddylation / activation of NF-kappaB-inducing kinase activity / eukaryotic translation initiation factor 3 complex / COP9 signalosome / cellular response to camptothecin / protein neddylation / Hydrolases; Acting on peptide bonds (peptidases) / metal-dependent deubiquitinase activity / RHOBTB1 GTPase cycle / regulation of JNK cascade / regulation of DNA damage response, signal transduction by p53 class mediator / inner cell mass cell proliferation / TGF-beta receptor signaling activates SMADs / regulation of proteolysis / : / skeletal muscle cell differentiation / regulation of postsynapse assembly / response to light stimulus / anatomical structure morphogenesis / JNK cascade / translation initiation factor activity / post-translational protein modification / protein modification process / Iron uptake and transport / DNA Damage Recognition in GG-NER / modification-dependent protein catabolic process / Formation of TC-NER Pre-Incision Complex / neuron differentiation / protein tag activity / metallopeptidase activity / synaptic vesicle / UCH proteinases / cell junction / transcription corepressor activity / intracellular protein localization / Cargo recognition for clathrin-mediated endocytosis / Neddylation / transcription by RNA polymerase II / ubiquitin-dependent protein catabolic process / in utero embryonic development / protein phosphorylation / transcription coactivator activity / regulation of cell cycle / nuclear speck / postsynapse / translation / negative regulation of cell population proliferation / ubiquitin protein ligase binding / regulation of transcription by RNA polymerase II / negative regulation of apoptotic process / chromatin / perinuclear region of cytoplasm / glutamatergic synapse / enzyme binding / negative regulation of transcription by RNA polymerase II / signal transduction / positive regulation of transcription by RNA polymerase II / proteolysis / extracellular exosome / nucleoplasm / metal ion binding / nucleus / cytoplasm / cytosol
Similarity search - Function
COP9 signalosome complex subunit 7, helix I / : / COP9 signalosome complex subunit 7a helix I domain / COP9 signalosome complex subunit 3-like, C-terminal helix / CSN7 helical bundle subdomain / COP9 signalosome, subunit CSN8 / COP9 signalosome complex subunit 4, helix turn helix domain / : / CSN4/RPN5/eIF3a helix turn helix domain / COP9 signalosome complex subunit 3, N-terminal helical repeats ...COP9 signalosome complex subunit 7, helix I / : / COP9 signalosome complex subunit 7a helix I domain / COP9 signalosome complex subunit 3-like, C-terminal helix / CSN7 helical bundle subdomain / COP9 signalosome, subunit CSN8 / COP9 signalosome complex subunit 4, helix turn helix domain / : / CSN4/RPN5/eIF3a helix turn helix domain / COP9 signalosome complex subunit 3, N-terminal helical repeats / COP9 signalosome subunit 6 / : / : / COP9 signalosome complex subunit 1, C-terminal helix / COP9 signalosome complex subunit 2, C-terminal helix / Cop9 signalosome subunit 5 C-terminal domain / Cop9 signalosome subunit 5 C-terminal domain / Nedd8-like ubiquitin / Eukaryotic translation initiation factor 3 subunit M eIF3m/COP9 signalosome complex subunit 7 COPS7 / : / : / : / PSMD12/CSN4, N-terminal / 26S proteasome regulatory subunit Rpn7/COP9 signalosome complex subunit 1 / 26S proteasome regulatory subunit Rpn7, N-terminal / 26S proteasome subunit RPN7 / 26S Proteasome non-ATPase regulatory subunit 12/COP9 signalosome complex subunit 4 / PCI/PINT associated module / CSN8/PSMD8/EIF3K / CSN8/PSMD8/EIF3K family / Rpn11/EIF3F, C-terminal / Maintenance of mitochondrial structure and function / : / motif in proteasome subunits, Int-6, Nip-1 and TRIP-15 / PCI domain / Proteasome component (PCI) domain / PCI domain profile. / JAB1/Mov34/MPN/PAD-1 ubiquitin protease / JAB/MPN domain / JAB1/MPN/MOV34 metalloenzyme domain / MPN domain / MPN domain profile. / : / Ubiquitin domain signature. / Ubiquitin conserved site / Ubiquitin domain / Ubiquitin family / Tetratricopeptide-like helical domain superfamily / Ubiquitin homologues / Ubiquitin domain profile. / Ubiquitin-like domain / Ubiquitin-like domain superfamily / Winged helix DNA-binding domain superfamily / Winged helix-like DNA-binding domain superfamily
Similarity search - Domain/homology
COP9 signalosome complex subunit 2 / COP9 signalosome complex subunit 1 / Ubiquitin-like protein NEDD8 / COP9 signalosome complex subunit 6 / COP9 signalosome complex subunit 5 / COP9 signalosome complex subunit 8 / COP9 signalosome complex subunit 4 / COP9 signalosome complex subunit 7b / COP9 signalosome complex subunit 3
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsShi H / Zheng N
Funding support United States, 1 items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI) United States
CitationJournal: Nature / Year: 2026
Title: CSN5i-3 is an orthosteric molecular glue inhibitor of COP9 signalosome.
Authors: Huigang Shi / Xiaorong Wang / Clinton Yu / Haibin Mao / Fenglong Jiao / Merav Braitbard / Ben Shor / Zhongsheng Zhang / Thomas R Hinds / Shiyun Cao / Erkang Fan / Dina Schneidman-Duhovny / ...Authors: Huigang Shi / Xiaorong Wang / Clinton Yu / Haibin Mao / Fenglong Jiao / Merav Braitbard / Ben Shor / Zhongsheng Zhang / Thomas R Hinds / Shiyun Cao / Erkang Fan / Dina Schneidman-Duhovny / Lan Huang / Ning Zheng /
Abstract: Orthosteric inhibitors block enzyme active sites and prevent substrates from binding. Enhancing their specificity through substrate dependence seems inherently unlikely, as their mechanism hinges on ...Orthosteric inhibitors block enzyme active sites and prevent substrates from binding. Enhancing their specificity through substrate dependence seems inherently unlikely, as their mechanism hinges on direct competition rather than selective recognition. Here we show that a molecular glue mechanism unexpectedly imparts substrate-dependent potency to CSN5i-3, an orthosteric inhibitor of the COP9 signalosome (CSN). We first confirm that CSN5i-3 inhibits CSN, which catalyses NEDD8 (N8) deconjugation from the cullin-RING ubiquitin ligases, by occupying the active site of its catalytic subunit, CSN5, and directly competing with the iso-peptide bond substrate. Notably, the orthosteric inhibitor binds free CSN with only micromolar affinity, yet achieves nanomolar potency in blocking its deneddylase activity. Cryogenic electron microscopy structures of the enzyme-substrate-inhibitor complex reveal that active site-engaged CSN5i-3 occludes the substrate iso-peptide linkage while simultaneously extending an N8-binding exosite of CSN5, acting as a molecular glue to cement the N8-CSN5 interaction. The cooperativity of this trimolecular CSN5i-3-N8-CSN5 assembly, in turn, sequesters CSN5i-3 at its binding site, conferring high potency to the orthosteric inhibitor despite its low affinity for the free enzyme. Together, our findings highlight the modest affinity requirements of molecule glues for individual target proteins and establish orthosteric molecular glue inhibitors as a new class of substrate-dependent enzyme antagonists.
History
DepositionNov 1, 2024-
Header (metadata) releaseDec 3, 2025-
Map releaseDec 3, 2025-
UpdateFeb 25, 2026-
Current statusFeb 25, 2026Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_47660.png

Downloads & links

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Map

FileDownload / File: emd_47660.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

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AxesZ (Sec.)Y (Row.)X (Col.)
0.84 Å/pix.
x 400 pix.
= 336. Å		0.84 Å/pix.
x 400 pix.
= 336. Å		0.84 Å/pix.
x 400 pix.
= 336. Å

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.84 Å
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Histogram (log scale)
Contour LevelBy AUTHOR: 0.18
Minimum - Maximum-0.7526929 - 1.3039274
Average (Standard dev.)0.0004166286 (±0.027778555)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions400400400
Spacing400400400
CellA=B=C: 336.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_47660_msk_1.map
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Half map: #2

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Half map: #1

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Sample components

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Entire : The complex of human COP9 signalosome with NEDD8 and CSN5i-3

EntireName: The complex of human COP9 signalosome with NEDD8 and CSN5i-3
Components
  • Complex: The complex of human COP9 signalosome with NEDD8 and CSN5i-3
    • Protein or peptide: COP9 signalosome complex subunit 7b
    • Protein or peptide: NEDD8
    • Protein or peptide: COP9 signalosome complex subunit 1
    • Protein or peptide: COP9 signalosome complex subunit 2
    • Protein or peptide: COP9 signalosome complex subunit 4
    • Protein or peptide: COP9 signalosome complex subunit 5
    • Protein or peptide: COP9 signalosome complex subunit 6
    • Protein or peptide: COP9 signalosome complex subunit 3
    • Protein or peptide: COP9 signalosome complex subunit 8
  • Ligand: 3-(difluoromethyl)-N-{6-[(5S,6S)-6-hydroxy-6,7,8,9-tetrahydro-5H-imidazo[1,5-a]azepin-5-yl][1,1'-biphenyl]-3-yl}-1-(propan-2-yl)-1H-pyrazole-5-carboxamide
  • Ligand: ZINC ION

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Supramolecule #1: The complex of human COP9 signalosome with NEDD8 and CSN5i-3

SupramoleculeName: The complex of human COP9 signalosome with NEDD8 and CSN5i-3
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #8-#9, #3, #1, #5-#7, #4, #2
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: COP9 signalosome complex subunit 2

MacromoleculeName: COP9 signalosome complex subunit 2 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 51.66457 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MSDMEDDFMC DDEEDYDLEY SEDSNSEPNV DLENQYYNSK ALKEDDPKAA LSSFQKVLEL EGEKGEWGFK ALKQMIKINF KLTNFPEMM NRYKQLLTYI RSAVTRNYSE KSINSILDYI STSKQMDLLQ EFYETTLEAL KDAKNDRLWF KTNTKLGKLY L EREEYGKL ...String:
MSDMEDDFMC DDEEDYDLEY SEDSNSEPNV DLENQYYNSK ALKEDDPKAA LSSFQKVLEL EGEKGEWGFK ALKQMIKINF KLTNFPEMM NRYKQLLTYI RSAVTRNYSE KSINSILDYI STSKQMDLLQ EFYETTLEAL KDAKNDRLWF KTNTKLGKLY L EREEYGKL QKILRQLHQS CQTDDGEDDL KKGTQLLEIY ALEIQMYTAQ KNNKKLKALY EQSLHIKSAI PHPLIMGVIR EC GGKMHLR EGEFEKAHTD FFEAFKNYDE SGSPRRTTCL KYLVLANMLM KSGINPFDSQ EAKPYKNDPE ILAMTNLVSA YQN NDITEF EKILKTNHSN IMDDPFIREH IEELLRNIRT QVLIKLIKPY TRIHIPFISK ELNIDVADVE SLLVQCILDN TIHG RIDQV NQLLELDHQK RGGARYTALD KWTNQLNSLN QAVVSKLA

UniProtKB: COP9 signalosome complex subunit 2

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Macromolecule #2: COP9 signalosome complex subunit 8

MacromoleculeName: COP9 signalosome complex subunit 8 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.245543 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MPVAVMAESA FSFKKLLDQC ENQELEAPGG IATPPVYGQL LALYLLHNDM NNARYLWKRI PPAIKSANSE LGGIWSVGQR IWQRDFPGI YTTINAHQWS ETVQPIMEAL RDATRRRAFA LVSQAYTSII ADDFAAFVGL PVEEAVKGIL EQGWQADSTT R MVLPRKPV ...String:
MPVAVMAESA FSFKKLLDQC ENQELEAPGG IATPPVYGQL LALYLLHNDM NNARYLWKRI PPAIKSANSE LGGIWSVGQR IWQRDFPGI YTTINAHQWS ETVQPIMEAL RDATRRRAFA LVSQAYTSII ADDFAAFVGL PVEEAVKGIL EQGWQADSTT R MVLPRKPV AGALDVSFNK FIPLSEPAPV PPIPNEQQLA RLTDYVAFLE N

UniProtKB: COP9 signalosome complex subunit 8

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Macromolecule #3: COP9 signalosome complex subunit 1

MacromoleculeName: COP9 signalosome complex subunit 1 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 55.606496 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MPLPVQVFNL QGAVEPMQID VDPQEDPQNA PDVNYVVENP SLDLEQYAAS YSGLMRIERL QFIADHCPTL RVEALKMALS FVQRTFNVD MYEEIHRKLS EATRSSLREL QNAPDAIPES GVEPPALDTA WVEATRKKAL LKLEKLDTDL KNYKGNSIKE S IRRGHDDL ...String:
MPLPVQVFNL QGAVEPMQID VDPQEDPQNA PDVNYVVENP SLDLEQYAAS YSGLMRIERL QFIADHCPTL RVEALKMALS FVQRTFNVD MYEEIHRKLS EATRSSLREL QNAPDAIPES GVEPPALDTA WVEATRKKAL LKLEKLDTDL KNYKGNSIKE S IRRGHDDL GDHYLDCGDL SNALKCYSRA RDYCTSAKHV INMCLNVIKV SVYLQNWSHV LSYVSKAEST PEIAEQRGER DS QTQAILT KLKCAAGLAE LAARKYKQAA KCLLLASFDH CDFPELLSPS NVAIYGGLCA LATFDRQELQ RNVISSSSFK LFL ELEPQV RDIIFKFYES KYASCLKMLD EMKDNLLLDM YLAPHVRTLY TQIRNRALIQ YFSPYVSADM HRMAAAFNTT VAAL EDELT QLILEGLISA RVDSHSKILY ARDVDQRSTT FEKSLLMGKE FQRRAKAMML RAAVLRNQIH VKSPPREGSQ GELTP ANSQ SRMSTNM

UniProtKB: COP9 signalosome complex subunit 1

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Macromolecule #4: COP9 signalosome complex subunit 3

MacromoleculeName: COP9 signalosome complex subunit 3 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 47.924008 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MASALEQFVN SVRQLSAQGQ MTQLCELINK SGELLAKNLS HLDTVLGALD VQEHSLGVLA VLFVKFSMPS VPDFETLFSQ VQLFISTCN GEHIRYATDT FAGLCHQLTN ALVERKQPLR GIGILKQAID KMQMNTNQLT SIHADLCQLC LLAKCFKPAL P YLDVDMMD ...String:
MASALEQFVN SVRQLSAQGQ MTQLCELINK SGELLAKNLS HLDTVLGALD VQEHSLGVLA VLFVKFSMPS VPDFETLFSQ VQLFISTCN GEHIRYATDT FAGLCHQLTN ALVERKQPLR GIGILKQAID KMQMNTNQLT SIHADLCQLC LLAKCFKPAL P YLDVDMMD ICKENGAYDA KHFLCYYYYG GMIYTGLKNF ERALYFYEQA ITTPAMAVSH IMLESYKKYI LVSLILLGKV QQ LPKYTSQ IVGRFIKPLS NAYHELAQVY STNNPSELRN LVNKHSETFT RDNNMGLVKQ CLSSLYKKNI QRLTKTFLTL SLQ DMASRV QLSGPQEAEK YVLHMIEDGE IFASINQKDG MVSFHDNPEK YNNPAMLHNI DQEMLKCIEL DERLKAMDQE ITVN PQFVQ KSMGSQEDDS GNKPSSYS

UniProtKB: COP9 signalosome complex subunit 3

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Macromolecule #5: COP9 signalosome complex subunit 4

MacromoleculeName: COP9 signalosome complex subunit 4 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 46.322688 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MAAAVRQDLA QLMNSSGSHK DLAGKYRQIL EKAIQLSGAE QLEALKAFVE AMVNENVSLV ISRQLLTDFC THLPNLPDST AKEIYHFTL EKIQPRVISF EEQVASIRQH LASIYEKEED WRNAAQVLVG IPLETGQKQY NVDYKLETYL KIARLYLEDD D PVQAEAYI ...String:
MAAAVRQDLA QLMNSSGSHK DLAGKYRQIL EKAIQLSGAE QLEALKAFVE AMVNENVSLV ISRQLLTDFC THLPNLPDST AKEIYHFTL EKIQPRVISF EEQVASIRQH LASIYEKEED WRNAAQVLVG IPLETGQKQY NVDYKLETYL KIARLYLEDD D PVQAEAYI NRASLLQNES TNEQLQIHYK VCYARVLDYR RKFIEAAQRY NELSYKTIVH ESERLEALKH ALHCTILASA GQ QRSRMLA TLFKDERCQQ LAAYGILEKM YLDRIIRGNQ LQEFAAMLMP HQKATTADGS SILDRAVIEH NLLSASKLYN NIT FEELGA LLEIPAAKAE KIASQMITEG RMNGFIDQID GIVHFETREA LPTWDKQIQS LCFQVNNLLE KISQTAPEWT AQAM EAQMA Q

UniProtKB: COP9 signalosome complex subunit 4

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Macromolecule #6: COP9 signalosome complex subunit 5

MacromoleculeName: COP9 signalosome complex subunit 5 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO / EC number: Hydrolases; Acting on peptide bonds (peptidases)
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 37.621742 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MAASGSGMAQ KTWELANNMQ EAQSIDEIYK YDKKQQQEIL AAKPWTKDHH YFKYCKISAL ALLKMVMHAR SGGNLEVMGL MLGKVDGET MIIMDSFALP VEGTETRVNA QAAAYEYMAA YIENAKQVGR LENAIGWYHS HPGYGCWLSG IDVSTQMLNQ Q FQEPFVAV ...String:
MAASGSGMAQ KTWELANNMQ EAQSIDEIYK YDKKQQQEIL AAKPWTKDHH YFKYCKISAL ALLKMVMHAR SGGNLEVMGL MLGKVDGET MIIMDSFALP VEGTETRVNA QAAAYEYMAA YIENAKQVGR LENAIGWYHS HPGYGCWLSG IDVSTQMLNQ Q FQEPFVAV VIDPTRTISA GKVNLGAFRT YPKGYKPPDE GPSEYQTIPL NKIEDFGVHC KQYYALEVSY FKSSLDRKLL EL LWNKYWV NTLSSSSLLT NADYTTGQVF DLSEKLEQSE AQLGRGSFML GLETHDRKSE DKLAKATRDS CKTTIEAIHG LMS QVIKDK LFNQINIS

UniProtKB: COP9 signalosome complex subunit 5

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Macromolecule #7: COP9 signalosome complex subunit 6

MacromoleculeName: COP9 signalosome complex subunit 6 / type: protein_or_peptide / ID: 7 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 36.203398 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MAAAAAAAAA TNGTGGSSGM EVDAAVVPSV MACGVTGSVS VALHPLVILN ISDHWIRMRS QEGRPVQVIG ALIGKQEGRN IEVMNSFEL LSHTVEEKII IDKEYYYTKE EQFKQVFKEL EFLGWYTTGG PPDPSDIHVH KQVCEIIESP LFLKLNPMTK H TDLPVSVF ...String:
MAAAAAAAAA TNGTGGSSGM EVDAAVVPSV MACGVTGSVS VALHPLVILN ISDHWIRMRS QEGRPVQVIG ALIGKQEGRN IEVMNSFEL LSHTVEEKII IDKEYYYTKE EQFKQVFKEL EFLGWYTTGG PPDPSDIHVH KQVCEIIESP LFLKLNPMTK H TDLPVSVF ESVIDIINGE ATMLFAELTY TLATEEAERI GVDHVARMTA TGSGENSTVA EHLIAQHSAI KMLHSRVKLI LE YVKASEA GEVPFNHEIL REAYALCHCL PVLSTDKFKT DFYDQCNDVG LMAYLGTITK TCNTMNQFVN KFNVLYDRQG IGR RMRGLF F

UniProtKB: COP9 signalosome complex subunit 6

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Macromolecule #8: COP9 signalosome complex subunit 7b

MacromoleculeName: COP9 signalosome complex subunit 7b / type: protein_or_peptide / ID: 8 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 29.656928 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MAGEQKPSSN LLEQFILLAK GTSGSALTAL ISQVLEAPGV YVFGELLELA NVQELAEGAN AAYLQLLNLF AYGTYPDYIA NKESLPELS TAQQNKLKHL TIVSLASRMK CIPYSVLLKD LEMRNLRELE DLIIEAVYTD IIQGKLDQRN QLLEVDFCIG R DIRKKDIN ...String:
MAGEQKPSSN LLEQFILLAK GTSGSALTAL ISQVLEAPGV YVFGELLELA NVQELAEGAN AAYLQLLNLF AYGTYPDYIA NKESLPELS TAQQNKLKHL TIVSLASRMK CIPYSVLLKD LEMRNLRELE DLIIEAVYTD IIQGKLDQRN QLLEVDFCIG R DIRKKDIN NIVKTLHEWC DGCEAVLLGI EQQVLRANQY KENHNRTQQQ VEAEVTNIKK TLKATASSSA QEMEQQLAER EC PPHAEQR QPTKKMSKVK GLVSSRH

UniProtKB: COP9 signalosome complex subunit 7b

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Macromolecule #9: NEDD8

MacromoleculeName: NEDD8 / type: protein_or_peptide / ID: 9 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 9.086562 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MLIKVKTLTG KEIEIDIEPT DKVERIKERV EEKEGIPPQQ QRLIYSGKQM NDEKTAADYK ILGGSVLHLV LALRGGGGLR Q

UniProtKB: Ubiquitin-like protein NEDD8

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Macromolecule #10: 3-(difluoromethyl)-N-{6-[(5S,6S)-6-hydroxy-6,7,8,9-tetrahydro-5H-...

MacromoleculeName: 3-(difluoromethyl)-N-{6-[(5S,6S)-6-hydroxy-6,7,8,9-tetrahydro-5H-imidazo[1,5-a]azepin-5-yl][1,1'-biphenyl]-3-yl}-1-(propan-2-yl)-1H-pyrazole-5-carboxamide
type: ligand / ID: 10 / Number of copies: 1 / Formula: 6LT
Molecular weightTheoretical: 505.559 Da
Chemical component information

ChemComp-6LT:
3-(difluoromethyl)-N-{6-[(5S,6S)-6-hydroxy-6,7,8,9-tetrahydro-5H-imidazo[1,5-a]azepin-5-yl][1,1'-biphenyl]-3-yl}-1-(propan-2-yl)-1H-pyrazole-5-carboxamide

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Macromolecule #11: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 11 / Number of copies: 1 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
GridModel: UltrAuFoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.0 µm / Nominal defocus min: 0.8 µm
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: OTHER / Details: Ab-initio reconstruction
Final reconstructionAlgorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 104415
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: OTHER / Software - Name: cryoSPARC

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Atomic model buiding 1

Initial model
PDB IDChain

4d10

source_name: PDB, initial_model_type: experimental model

5jog

source_name: PDB, initial_model_type: experimental model
Output model

PDB-9e77:
Cryo-EM structure of CSN-N8 in complex with CSN5i-3

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