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- EMDB-35615: Cryo-EM structure of the gamma-MSH-bound human melanocortin recep... -

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Entry
Database: EMDB / ID: EMD-35615
TitleCryo-EM structure of the gamma-MSH-bound human melanocortin receptor 3 (MC3R)-Gs complex
Map data
Sample
  • Complex: Cryo-EM structure of gamma-MSH-bound human melanocortin receptor 3 in complex with G protein
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,HiBiT
    • Protein or peptide: HA signal peptide,Melanocortin receptor 3,LgBiT subunit
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: gamma-melanocyte-stimulating hormone
    • Protein or peptide: Nanobody-35Single-domain antibody
  • Ligand: CALCIUM IONCalcium
Keywordshuman melanocortin receptor 3 / G protein-coupled receptor / ligand recpgnition / membrane protein
Function / homology
Function and homology information


homoiothermy / melanocyte-stimulating hormone receptor activity / melanocortin receptor activity / sodium ion homeostasis / regulation of feeding behavior / neuropeptide binding / regulation of metabolic process / Activation of G protein gated Potassium channels / G-protein activation / G beta:gamma signalling through PI3Kgamma ...homoiothermy / melanocyte-stimulating hormone receptor activity / melanocortin receptor activity / sodium ion homeostasis / regulation of feeding behavior / neuropeptide binding / regulation of metabolic process / Activation of G protein gated Potassium channels / G-protein activation / G beta:gamma signalling through PI3Kgamma / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through PLC beta / ADP signalling through P2Y purinoceptor 1 / Thromboxane signalling through TP receptor / Presynaptic function of Kainate receptors / G beta:gamma signalling through CDC42 / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / G alpha (12/13) signalling events / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Thrombin signalling through proteinase activated receptors (PARs) / Ca2+ pathway / G alpha (z) signalling events / Extra-nuclear estrogen signaling / G alpha (s) signalling events / G alpha (q) signalling events / G alpha (i) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / locomotor rhythm / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / PKA activation in glucagon signalling / peptide hormone binding / hair follicle placode formation / intracellular transport / Adenylate cyclase inhibitory pathway / D1 dopamine receptor binding / developmental growth / positive regulation of protein localization to cell cortex / regulation of cAMP-mediated signaling / D2 dopamine receptor binding / G protein-coupled serotonin receptor binding / Hedgehog 'off' state / positive regulation of cAMP-mediated signaling / adenylate cyclase-activating adrenergic receptor signaling pathway / regulation of mitotic spindle organization / cellular response to forskolin / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / activation of adenylate cyclase activity / adenylate cyclase activator activity / regulation of heart rate / Peptide ligand-binding receptors / viral budding from plasma membrane / trans-Golgi network membrane / Regulation of insulin secretion / G protein-coupled receptor binding / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / circadian regulation of gene expression / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / bone development / G-protein activation / G protein-coupled acetylcholine receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / adenylate cyclase-activating G protein-coupled receptor signaling pathway / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Sensory perception of sweet, bitter, and umami (glutamate) taste / response to peptide hormone / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / Adrenaline,noradrenaline inhibits insulin secretion / platelet aggregation / Glucagon-type ligand receptors / cognition / Vasopressin regulates renal water homeostasis via Aquaporins / positive regulation of GTPase activity / G alpha (z) signalling events / regulation of blood pressure / cellular response to catecholamine stimulus / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / adenylate cyclase-activating dopamine receptor signaling pathway / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / sensory perception of taste / GPER1 signaling
Similarity search - Function
Melanocortin 3 receptor / Melanocortin receptor 3-5 / Melanocortin/ACTH receptor / G-protein alpha subunit, group S / Haemagglutinin, influenzavirus A / Haemagglutinin, HA1 chain, alpha/beta domain superfamily / Haemagglutinin / Haemagglutinin, influenzavirus A/B / G-protein alpha subunit, group I / Viral capsid/haemagglutinin protein ...Melanocortin 3 receptor / Melanocortin receptor 3-5 / Melanocortin/ACTH receptor / G-protein alpha subunit, group S / Haemagglutinin, influenzavirus A / Haemagglutinin, HA1 chain, alpha/beta domain superfamily / Haemagglutinin / Haemagglutinin, influenzavirus A/B / G-protein alpha subunit, group I / Viral capsid/haemagglutinin protein / Serpentine type 7TM GPCR chemoreceptor Srsx / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. / GGL domain / G-protein gamma-like domain superfamily / G-protein gamma-like domain / GGL domain / G protein gamma subunit-like motifs / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein coupled receptors family 1 signature. / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / 7 transmembrane receptor (rhodopsin family) / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Hemagglutinin / Melanocortin receptor 3 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Guanine nucleotide-binding protein G(s) subunit alpha isoforms short / Guanine nucleotide-binding protein G(i) subunit alpha-1 / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Similarity search - Component
Biological speciesHomo sapiens (human) / Bos taurus (cattle) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.86 Å
AuthorsFeng WB / Zhou QT / Chen XY / Dai AT / Cai XQ / Liu X / Zhao FH / Chen Y / Ye CY / Xu YN ...Feng WB / Zhou QT / Chen XY / Dai AT / Cai XQ / Liu X / Zhao FH / Chen Y / Ye CY / Xu YN / Cong ZT / Li H / Lin S
Funding support China, 11 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)81872915 China
National Natural Science Foundation of China (NSFC)82073904 China
National Natural Science Foundation of China (NSFC)82121005 China
National Natural Science Foundation of China (NSFC)81973373 China
National Natural Science Foundation of China (NSFC)21704064 China
Other government2018YFA0507000
Other government2018ZX09735-001
Other government2018ZX09711002-002-005
Other governmentSTI2030-Major project 2021ZD0203400
Other governmentZDKJ2021028
Other government21JC1401600
CitationJournal: Cell Discov / Year: 2023
Title: Structural insights into ligand recognition and subtype selectivity of the human melanocortin-3 and melanocortin-5 receptors.
Authors: Wenbo Feng / Qingtong Zhou / Xianyue Chen / Antao Dai / Xiaoqing Cai / Xiao Liu / Fenghui Zhao / Yan Chen / Chenyu Ye / Yingna Xu / Zhaotong Cong / Hao Li / Shi Lin / Dehua Yang / Ming-Wei Wang /
Abstract: Members of the melanocortin receptor (MCR) family that recognize different melanocortin peptides mediate a broad spectrum of cellular processes including energy homeostasis, inflammation and skin ...Members of the melanocortin receptor (MCR) family that recognize different melanocortin peptides mediate a broad spectrum of cellular processes including energy homeostasis, inflammation and skin pigmentation through five MCR subtypes (MC1R-MC5R). The structural basis of subtype selectivity of the endogenous agonist γ-MSH and non-selectivity of agonist α-MSH remains elusive, as the two agonists are highly similar with a conserved HFRW motif. Here, we report three cryo-electron microscopy structures of MC3R-G in complex with γ-MSH and MC5R-G in the presence of α-MSH or a potent synthetic agonist PG-901. The structures reveal that α-MSH and γ-MSH adopt a "U-shape" conformation, penetrate into the wide-open orthosteric pocket and form massive common contacts with MCRs via the HFRW motif. The C-terminus of γ-MSH occupies an MC3R-specific complementary binding groove likely conferring subtype selectivity, whereas that of α-MSH distances itself from the receptor with neglectable contacts. PG-901 achieves the same potency as α-MSH with a shorter length by rebalancing the recognition site and mimicking the intra-peptide salt bridge in α-MSH by cyclization. Solid density confirmed the calcium ion binding in MC3R and MC5R, and the distinct modulation effects of divalent ions were demonstrated. Our results provide insights into ligand recognition and subtype selectivity among MCRs, and expand the knowledge of signal transduction among MCR family members.
History
DepositionMar 10, 2023-
Header (metadata) releaseSep 20, 2023-
Map releaseSep 20, 2023-
UpdateSep 20, 2023-
Current statusSep 20, 2023Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_35615.png

Downloads & links

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Map

FileDownload / File: emd_35615.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.071 Å
Density
Contour LevelBy AUTHOR: 0.08
Minimum - Maximum-0.39619815 - 0.7517076
Average (Standard dev.)-0.0006204008 (±0.016786331)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 274.176 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_35615_half_map_1.map
Projections & Slices
AxesZYX

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Histogram

Histogram (log scale)

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Half map: #1

Fileemd_35615_half_map_2.map
Projections & Slices
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Sample components

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Entire : Cryo-EM structure of gamma-MSH-bound human melanocortin receptor ...

EntireName: Cryo-EM structure of gamma-MSH-bound human melanocortin receptor 3 in complex with G protein
Components
  • Complex: Cryo-EM structure of gamma-MSH-bound human melanocortin receptor 3 in complex with G protein
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,HiBiT
    • Protein or peptide: HA signal peptide,Melanocortin receptor 3,LgBiT subunit
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: gamma-melanocyte-stimulating hormone
    • Protein or peptide: Nanobody-35Single-domain antibody
  • Ligand: CALCIUM IONCalcium

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Supramolecule #1: Cryo-EM structure of gamma-MSH-bound human melanocortin receptor ...

SupramoleculeName: Cryo-EM structure of gamma-MSH-bound human melanocortin receptor 3 in complex with G protein
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine n...

MacromoleculeName: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 41.879465 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGCTLSAEDK AAVERSKMIE KQLQKDKQVY RATHRLLLLG ADNSGKSTIV KQMRIYHVNG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI ...String:
MGCTLSAEDK AAVERSKMIE KQLQKDKQVY RATHRLLLLG ADNSGKSTIV KQMRIYHVNG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI PTQQDVLRTR VKTSGIFETK FQVDKVNFHM FDVGAQRDER RKWIQCFNDV TAIIFVVDSS DYNRLQEALN DF KSIWNNR WLRTISVILF LNKQDLLAEK VLAGKSKIED YFPEFARYTT PEDATPEPGE DPRVTRAKYF IRDEFLRIST ASG DGRHYC YPHFTCSVDT ENARRIFNDC RDIIQRMHLR QYELL

UniProtKB: Guanine nucleotide-binding protein G(i) subunit alpha-1, Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(i) subunit alpha-1, ...UniProtKB: Guanine nucleotide-binding protein G(i) subunit alpha-1, Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(i) subunit alpha-1, Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

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Macromolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,HiBiT

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,HiBiT
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 40.226992 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGSLLQSELD QLRQEAEQLK NQIRDARKAC ADATLSQITN NIDPVGRIQM RTRRTLRGHL AKIYAMHWGT DSRLLVSASQ DGKLIIWDS YTTNKVHAIP LRSSWVMTCA YAPSGNYVAC GGLDNICSIY NLKTREGNVR VSRELAGHTG YLSCCRFLDD N QIVTSSGD ...String:
MGSLLQSELD QLRQEAEQLK NQIRDARKAC ADATLSQITN NIDPVGRIQM RTRRTLRGHL AKIYAMHWGT DSRLLVSASQ DGKLIIWDS YTTNKVHAIP LRSSWVMTCA YAPSGNYVAC GGLDNICSIY NLKTREGNVR VSRELAGHTG YLSCCRFLDD N QIVTSSGD TTCALWDIET GQQTTTFTGH TGDVMSLSLA PDTRLFVSGA CDASAKLWDV REGMCRQTFT GHESDINAIC FF PNGNAFA TGSDDATCRL FDLRADQELM TYSHDNIICG ITSVSFSKSG RLLLAGYDDF NCNVWDALKA DRAGVLAGHD NRV SCLGVT DDGMAVATGS WDSFLKIWNG SSGGGGSGGG GSSGVSGWRL FKKIS

UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

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Macromolecule #3: HA signal peptide,Melanocortin receptor 3,LgBiT subunit

MacromoleculeName: HA signal peptide,Melanocortin receptor 3,LgBiT subunit
type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 56.351914 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MKTIIALSYI FCLVFANASC CLPSVQPTLP NGSEHLQAPF FSNQSSSAFC EQVFIKPEVF LSLGIVSLLE NILVILAVVR NGNLHSPMY FFLCSLAVAD MLVSVSNALE TIMIAIVHSD YLTFEDQFIQ HMDNIFDSMI CISLVASICN LLAIAVDRYV T IFYALRYH ...String:
MKTIIALSYI FCLVFANASC CLPSVQPTLP NGSEHLQAPF FSNQSSSAFC EQVFIKPEVF LSLGIVSLLE NILVILAVVR NGNLHSPMY FFLCSLAVAD MLVSVSNALE TIMIAIVHSD YLTFEDQFIQ HMDNIFDSMI CISLVASICN LLAIAVDRYV T IFYALRYH SIMTVRKALT LIVAIWVCCG VCGVVFIVYS ESKMVIVCLI TMFFAMMLLM GTLYVHMFLF ARLHVKRIAA LP PADGVAP QQHSCMKGAV TITILLGVFI FCWAPFFLHL VLIITCPTNP YCICYTAHFN TYLVLIMCNS VIDPLIYAFR SLE LRNTFR EILCGCNGMN LGGSSGGGGS GGGGSSGVFT LEDFVGDWEQ TAAYNLDQVL EQGGVSSLLQ NLAVSVTPIQ RIVR SGENA LKIDIHVIIP YEGLSADQMA QIEEVFKVVY PVDDHHFKVI LPYGTLVIDG VTPNMLNYFG RPYEGIAVFD GKKIT VTGT LWNGNKIIDE RLITPDGSML FRVTINS

UniProtKB: Hemagglutinin, Melanocortin receptor 3

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Macromolecule #4: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bos taurus (cattle)
Molecular weightTheoretical: 7.861143 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L

UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

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Macromolecule #5: gamma-melanocyte-stimulating hormone

MacromoleculeName: gamma-melanocyte-stimulating hormone / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 1.516747 KDa
SequenceString:
YVMGHFRWDR F

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Macromolecule #6: Nanobody-35

MacromoleculeName: Nanobody-35 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 17.352498 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MKYLLPTAAA GLLLLAAQPA MAQVQLQESG GGLVQPGGSL RLSCAASGFT FSNYKMNWVR QAPGKGLEWV SDISQSGASI SYTGSVKGR FTISRDNAKN TLYLQMNSLK PEDTAVYYCA RCPAPFTRDC FDVTSTTYAY RGQGTQVTVS SHHHHHHEPE A

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Macromolecule #7: CALCIUM ION

MacromoleculeName: CALCIUM ION / type: ligand / ID: 7 / Number of copies: 1 / Formula: CA
Molecular weightTheoretical: 40.078 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: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: OTHER
Electron opticsIllumination mode: OTHER / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2.2 µm / Nominal defocus min: 1.2 µm
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 80.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

7f4d

Initial angle assignmentType: OTHER
Final angle assignmentType: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.86 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 1102647
FSC plot (resolution estimation)

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