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- EMDB-53258: 9-subunit COP9 signalosome complex -

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ID or keywords:

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Basic information

Entry
Database: EMDB / ID: EMD-53258
Title9-subunit COP9 signalosome complex
Map data
Sample
  • Complex: COP9 signalosome
    • Protein or peptide: x 9 types
  • Ligand: x 2 types
KeywordsCOP9 signalosome / HYDROLASE
Function / homology
Function and homology information


negative regulation of protein localization to nucleolus / 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 ...negative regulation of protein localization to nucleolus / 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 / negative regulation of protein neddylation / protein neddylation / Hydrolases; Acting on peptide bonds (peptidases) / RHOBTB1 GTPase cycle / metal-dependent deubiquitinase activity / regulation of JNK cascade / regulation of DNA damage response, signal transduction by p53 class mediator / inner cell mass cell proliferation / skeletal muscle cell differentiation / response to light stimulus / : / JNK cascade / translation initiation factor activity / post-translational protein modification / DNA Damage Recognition in GG-NER / Formation of TC-NER Pre-Incision Complex / metallopeptidase activity / neuron differentiation / synaptic vesicle / cellular response to UV / transcription corepressor activity / cell junction / 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 / translation / negative regulation of cell population proliferation / positive regulation of cell population proliferation / negative regulation of apoptotic process / chromatin / perinuclear region of cytoplasm / 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 9, metazoa / Myeloma-overexpressed-like / 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 / : ...COP9 signalosome complex, subunit 9, metazoa / Myeloma-overexpressed-like / 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 / 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. / Tetratricopeptide-like helical 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 / COP9 signalosome complex subunit 6 / COP9 signalosome complex subunit 9 / 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: 3.0 Å
AuthorsDing S / Clapperton JA / Maeots ME / Enchev RI
Funding support United Kingdom, 1 items
OrganizationGrant numberCountry
The Francis Crick InstituteCC2059 United Kingdom
CitationJournal: Nat Commun / Year: 2026
Title: Structural basis of CSN-mediated SCF deneddylation.
Authors: Shan Ding / Julie A Clapperton / Märt-Erik Mäeots / Simone Kunzelmann / Mohammed Shaaban / Radoslav I Enchev /
Abstract: Cullin-RING ligases (CRLs) are the largest family of E3 ligases, with ubiquitination activity dynamically regulated by neddylation and deneddylation by the COP9 signalosome (CSN). CSN-mediated ...Cullin-RING ligases (CRLs) are the largest family of E3 ligases, with ubiquitination activity dynamically regulated by neddylation and deneddylation by the COP9 signalosome (CSN). CSN-mediated deneddylation not only deactivates CRLs but also enables substrate receptor exchange. Although CSN is a promising drug target, the structural basis underlying its catalytic mechanism remains unclear. Here, we use cryo-electron microscopy (cryo-EM) to uncover distinct functional states of CSN-CRL (SCF) complexes, capturing key intermediates of the deneddylation cycle. We visualise an autoinhibited docking state and a catalytic intermediate in which CSN5 Ins-1 loop, RBX1 RING and neddylated Cullin WHB domains are repositioned for isopeptide cleavage. We further resolve four dissociation intermediates that define the stepwise release of CSN from its product, with RBX1 RING stabilising key interactions. Additionally, our structures locate CSNAP within a CSN3-CSN8 groove. Together, our study provides a mechanistic model for CSN function and informs the rational design of CSN-targeted therapeutics.
History
DepositionMar 25, 2025-
Header (metadata) releaseFeb 4, 2026-
Map releaseFeb 4, 2026-
UpdateFeb 18, 2026-
Current statusFeb 18, 2026Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_53258.png

Downloads & links

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Map

FileDownload / File: emd_53258.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
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AxesZ (Sec.)Y (Row.)X (Col.)
1.08 Å/pix.
x 320 pix.
= 345.6 Å		1.08 Å/pix.
x 320 pix.
= 345.6 Å		1.08 Å/pix.
x 320 pix.
= 345.6 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.08 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.0254
Minimum - Maximum-0.0016996316 - 1.7054214
Average (Standard dev.)0.00090557215 (±0.02119805)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 345.6 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_53258_half_map_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_53258_half_map_2.map
Projections & Slices
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Histogram (log scale)

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Sample components

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Entire : COP9 signalosome

EntireName: COP9 signalosome
Components
  • Complex: COP9 signalosome
    • Protein or peptide: COP9 signalosome complex subunit 1
    • Protein or peptide: COP9 signalosome complex subunit 2
    • Protein or peptide: COP9 signalosome complex subunit 3
    • 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 7b
    • Protein or peptide: COP9 signalosome complex subunit 8
    • Protein or peptide: COP9 signalosome complex subunit 9
  • Ligand: ZINC ION
  • Ligand: water

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Supramolecule #1: COP9 signalosome

SupramoleculeName: COP9 signalosome / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #2-#5, #1, #6-#9
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: COP9 signalosome complex subunit 5

MacromoleculeName: COP9 signalosome complex subunit 5 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: Hydrolases; Acting on peptide bonds (peptidases)
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 37.563707 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MAASGSGMAQ KTWELANNMQ EAQSIDEIYK YDKKQQQEIL AAKPWTKDHH YFKYCKISAL ALLKMVMHAR SGGNLEVMGL MLGKVDGET MIIMDSFALP VEGTATRVNA QAAAYEYMAA YIENAKQVGR LENAIGWYHS HPGYGCWLSG IDVSTQMLNQ Q FQEPFVAV ...String:
MAASGSGMAQ KTWELANNMQ EAQSIDEIYK YDKKQQQEIL AAKPWTKDHH YFKYCKISAL ALLKMVMHAR SGGNLEVMGL MLGKVDGET MIIMDSFALP VEGTATRVNA 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 #2: COP9 signalosome complex subunit 1

MacromoleculeName: COP9 signalosome complex subunit 1 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 55.606496 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
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 #3: COP9 signalosome complex subunit 2

MacromoleculeName: COP9 signalosome complex subunit 2 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 51.66457 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
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 #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: Spodoptera frugiperda (fall armyworm)
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: Spodoptera frugiperda (fall armyworm)
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 6

MacromoleculeName: COP9 signalosome complex subunit 6 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 36.203398 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
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 #7: COP9 signalosome complex subunit 7b

MacromoleculeName: COP9 signalosome complex subunit 7b / type: protein_or_peptide / ID: 7 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 29.656928 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
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 #8: COP9 signalosome complex subunit 8

MacromoleculeName: COP9 signalosome complex subunit 8 / type: protein_or_peptide / ID: 8 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.245543 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
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 #9: COP9 signalosome complex subunit 9

MacromoleculeName: COP9 signalosome complex subunit 9 / type: protein_or_peptide / ID: 9 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 6.213689 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
MKPAVDEMFP EGAGPYVDLD EAGGSTGLLM DLAANEKAVH ADFFNDFEDL FDDDDIQ

UniProtKB: COP9 signalosome complex subunit 9

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Macromolecule #10: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 10 / Number of copies: 1 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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Macromolecule #11: water

MacromoleculeName: water / type: ligand / ID: 11 / Number of copies: 1 / Formula: HOH
Molecular weightTheoretical: 18.015 Da
Chemical component information

ChemComp-HOH:
WATER

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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 / Details: 15 mM Hepes pH 7.5, 120 mM NaCl, 0.5 mM DTT
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Average electron dose: 47.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Nominal defocus max: 0.5 µm / Nominal defocus min: 0.05 µm
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: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.0 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION / Number images used: 582407
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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