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- EMDB-20078: Muscarinic acetylcholine receptor 1-G11 protein complex -

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Basic information

Entry
Database: EMDB / ID: EMD-20078
TitleMuscarinic acetylcholine receptor 1-G11 protein complex
Map dataCryo-EM map for M1R complex
Sample
  • Complex: muscarinic acetylcholine receptor 1 in complex with heterotrimeric G11 protein
    • Complex: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein subunit alpha-11, Antibody fragment, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
      • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein subunit alpha-11
      • Protein or peptide: Antibody fragment
      • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
      • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Complex: Muscarinic acetylcholine receptor M1
      • Protein or peptide: Muscarinic acetylcholine receptor M1
  • Ligand: 4-(4,5-dihydro-1,2-oxazol-3-yloxy)-N,N,N-trimethylbut-2-yn-1-aminium
  • Ligand: CHOLESTEROL HEMISUCCINATE
KeywordsG-protein coupled receptor-G-protein complex / neurotransmitter receptor / SIGNALING PROTEIN
Function / homology
Function and homology information


regulation of melanocyte differentiation / saliva secretion / regulation of glial cell proliferation / positive regulation of monoatomic ion transport / Muscarinic acetylcholine receptors / Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / ion channel modulating, G protein-coupled receptor signaling pathway / Acetylcholine regulates insulin secretion / phospholipase C-activating G protein-coupled acetylcholine receptor signaling pathway / endothelin receptor signaling pathway ...regulation of melanocyte differentiation / saliva secretion / regulation of glial cell proliferation / positive regulation of monoatomic ion transport / Muscarinic acetylcholine receptors / Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / ion channel modulating, G protein-coupled receptor signaling pathway / Acetylcholine regulates insulin secretion / phospholipase C-activating G protein-coupled acetylcholine receptor signaling pathway / endothelin receptor signaling pathway / developmental pigmentation / G protein-coupled acetylcholine receptor activity / cholinergic synapse / cellular response to pH / neuromuscular synaptic transmission / PLC beta mediated events / phospholipase C-activating dopamine receptor signaling pathway / entrainment of circadian clock / cranial skeletal system development / adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway / positive regulation of intracellular protein transport / phosphatidylinositol phospholipase C activity / phototransduction, visible light / G protein-coupled serotonin receptor activity / : / regulation of locomotion / postsynaptic modulation of chemical synaptic transmission / ligand-gated ion channel signaling pathway / action potential / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / photoreceptor outer segment / regulation of postsynaptic membrane potential / enzyme regulator activity / axon terminus / skeletal system development / G protein-coupled receptor binding / postsynaptic density membrane / positive regulation of insulin secretion / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / Activation of the phototransduction cascade / Schaffer collateral - CA1 synapse / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G protein activity / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / G-protein activation / 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 / regulation of blood pressure / cognition / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / cellular response to prostaglandin E stimulus / Inactivation, recovery and regulation of the phototransduction cascade / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / heart development / presynaptic membrane / nervous system development / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / fibroblast proliferation / G alpha (i) signalling events / G alpha (s) signalling events / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / chemical synaptic transmission / G alpha (q) signalling events / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / G protein-coupled receptor signaling pathway / lysosomal membrane
Similarity search - Function
Muscarinic acetylcholine receptor M1 / G-protein alpha subunit, group Q / Muscarinic acetylcholine receptor family / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. ...Muscarinic acetylcholine receptor M1 / G-protein alpha subunit, group Q / Muscarinic acetylcholine receptor family / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain / 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. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
G protein subunit alpha i1 / Muscarinic acetylcholine receptor M1 / Guanine nucleotide-binding protein subunit alpha-11 / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Similarity search - Component
Biological speciesHomo sapiens (human) / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsMaeda S / Qianhui Q
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM083118 United States
CitationJournal: Science / Year: 2019
Title: Structures of the M1 and M2 muscarinic acetylcholine receptor/G-protein complexes.
Authors: Shoji Maeda / Qianhui Qu / Michael J Robertson / Georgios Skiniotis / Brian K Kobilka /
Abstract: Muscarinic acetylcholine receptors are G protein-coupled receptors that respond to acetylcholine and play important signaling roles in the nervous system. There are five muscarinic receptor subtypes ...Muscarinic acetylcholine receptors are G protein-coupled receptors that respond to acetylcholine and play important signaling roles in the nervous system. There are five muscarinic receptor subtypes (M1R to M5R), which, despite sharing a high degree of sequence identity in the transmembrane region, couple to different heterotrimeric GTP-binding proteins (G proteins) to transmit signals. M1R, M3R, and M5R couple to the G family, whereas M2R and M4R couple to the G family. Here, we present and compare the cryo-electron microscopy structures of M1R in complex with G and M2R in complex with G The M1R-G complex exhibits distinct features, including an extended transmembrane helix 5 and carboxyl-terminal receptor tail that interacts with G protein. Detailed analysis of these structures provides a framework for understanding the molecular determinants of G-protein coupling selectivity.
History
DepositionApr 9, 2019-
Header (metadata) releaseMay 1, 2019-
Map releaseMay 8, 2019-
UpdateNov 20, 2024-
Current statusNov 20, 2024Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.023
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.023
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6oij
  • Surface level: 0.023
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_20078.png

Downloads & links

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Map

FileDownload / File: emd_20078.map.gz / Format: CCP4 / Size: 40.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCryo-EM map for M1R complex
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.06 Å/pix.
x 220 pix.
= 233.2 Å		1.06 Å/pix.
x 220 pix.
= 233.2 Å		1.06 Å/pix.
x 220 pix.
= 233.2 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.06 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.01 / Movie #1: 0.023
Minimum - Maximum-0.08929198 - 0.1408231
Average (Standard dev.)-0.00000790721 (±0.004012879)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions220220220
Spacing220220220
CellA=B=C: 233.19998 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.061.061.06
M x/y/z220220220
origin x/y/z0.0000.0000.000
length x/y/z233.200233.200233.200
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS220220220
D min/max/mean-0.0890.141-0.000

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Supplemental data

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Sample components

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Entire : muscarinic acetylcholine receptor 1 in complex with heterotrimeri...

EntireName: muscarinic acetylcholine receptor 1 in complex with heterotrimeric G11 protein
Components
  • Complex: muscarinic acetylcholine receptor 1 in complex with heterotrimeric G11 protein
    • Complex: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein subunit alpha-11, Antibody fragment, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
      • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein subunit alpha-11
      • Protein or peptide: Antibody fragment
      • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
      • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Complex: Muscarinic acetylcholine receptor M1
      • Protein or peptide: Muscarinic acetylcholine receptor M1
  • Ligand: 4-(4,5-dihydro-1,2-oxazol-3-yloxy)-N,N,N-trimethylbut-2-yn-1-aminium
  • Ligand: CHOLESTEROL HEMISUCCINATE

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Supramolecule #1: muscarinic acetylcholine receptor 1 in complex with heterotrimeri...

SupramoleculeName: muscarinic acetylcholine receptor 1 in complex with heterotrimeric G11 protein
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Molecular weightTheoretical: 150 KDa

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Supramolecule #2: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine n...

SupramoleculeName: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein subunit alpha-11, Antibody fragment, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, ...Name: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein subunit alpha-11, Antibody fragment, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1, #3-#5
Source (natural)Organism: Homo sapiens (human)

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Supramolecule #3: Muscarinic acetylcholine receptor M1

SupramoleculeName: Muscarinic acetylcholine receptor M1 / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2
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 subunit alpha-11
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 41.271086 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MGCTLSAEDK AAVERSKMID RNLREDGEKA RRELKLLLLG TGESGKSTFI KQMRIIHGAG YSEEDKRGFT KLVYQNIFTA MQAMIRAME TLKILYKYEQ NKANALLIRE VDVEKVTTFE HQYVSAIKTL WEDPGIQECY DRRREYQLSD SAKYYLTDVD R IATLGYLP ...String:
MGCTLSAEDK AAVERSKMID RNLREDGEKA RRELKLLLLG TGESGKSTFI KQMRIIHGAG YSEEDKRGFT KLVYQNIFTA MQAMIRAME TLKILYKYEQ NKANALLIRE VDVEKVTTFE HQYVSAIKTL WEDPGIQECY DRRREYQLSD SAKYYLTDVD R IATLGYLP TQQDVLRVRV PTTGIIEYPF DLENIIFRMV DVGGQRSERR KWIHCFENVT SIMFLVALSE YDQVLVESDN EN RMEESKA LFRTIITYPW FQNSSVILFL NKKDLLEDKI LYSHLVDYFP EFDGPQRDAQ AAREFILKMF VDLNPDSDKI IYS HFTCAT DTENIRFVFA AVKDTILQLN LKEYNLV

UniProtKB: G protein subunit alpha i1, Guanine nucleotide-binding protein subunit alpha-11

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Macromolecule #2: Muscarinic acetylcholine receptor M1

MacromoleculeName: Muscarinic acetylcholine receptor M1 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 41.241262 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: DYKDDDDAAA QTSAPPAVSP QITVLAPGKG PWQVAFIGIT TGLLSLATVT GNLLVLISFK VNTELKTVNN YFLLSLACAD LIIGTFSMN LYTTYLLMGH WALGTLACDL WLALDYVASQ ASVMNLLLIS FDRYFSVTRP LSYRAKRTPR RAALMIGLAW L VSFVLWAP ...String:
DYKDDDDAAA QTSAPPAVSP QITVLAPGKG PWQVAFIGIT TGLLSLATVT GNLLVLISFK VNTELKTVNN YFLLSLACAD LIIGTFSMN LYTTYLLMGH WALGTLACDL WLALDYVASQ ASVMNLLLIS FDRYFSVTRP LSYRAKRTPR RAALMIGLAW L VSFVLWAP AILFWQYLVG ERTVLAGQCY IQFLSQPIIT FGTAMAAFYL PVTVMCTLYW RIYRETENRA RELAALQGSE TP GGKEQLA KRKTFSLVKE KKAARTLSAI LLAFILTWTP YNIMVLVSTF CKDCVPETLW ELGYWLCYVN STINPMCYAL CNK AFRDTF RLLLLCRWDK RRWRKIPKRP GSVHRTPSRQ CHHHHHH

UniProtKB: Muscarinic acetylcholine receptor M1, Muscarinic acetylcholine receptor M1

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Macromolecule #3: Antibody fragment

MacromoleculeName: Antibody fragment / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 27.340482 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS ...String:
DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS NGNTYLYWFL QRPGQSPQLL IYRMSNLASG VPDRFSGSGS GTAFTLTISR LEAEDVGVYY CMQHLEYPLT FG AGTKLEL KGSLEVLFQ

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Macromolecule #4: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 37.728152 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: GPGSSGSELD QLRQEAEQLK NQIRDARKAC ADATLSQITN NIDPVGRIQM RTRRTLRGHL AKIYAMHWGT DSRLLVSASQ DGKLIIWDS YTTNKVHAIP LRSSWVMTCA YAPSGNYVAC GGLDNICSIY NLKTREGNVR VSRELAGHTG YLSCCRFLDD N QIVTSSGD ...String:
GPGSSGSELD 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 WDSFLKIWN

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

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Macromolecule #5: 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: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 7.861143 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
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 #6: 4-(4,5-dihydro-1,2-oxazol-3-yloxy)-N,N,N-trimethylbut-2-yn-1-aminium

MacromoleculeName: 4-(4,5-dihydro-1,2-oxazol-3-yloxy)-N,N,N-trimethylbut-2-yn-1-aminium
type: ligand / ID: 6 / Number of copies: 1 / Formula: IXO
Molecular weightTheoretical: 197.254 Da
Chemical component information

ChemComp-IXO:
4-(4,5-dihydro-1,2-oxazol-3-yloxy)-N,N,N-trimethylbut-2-yn-1-aminium

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Macromolecule #7: CHOLESTEROL HEMISUCCINATE

MacromoleculeName: CHOLESTEROL HEMISUCCINATE / type: ligand / ID: 7 / Number of copies: 2 / Formula: Y01
Molecular weightTheoretical: 486.726 Da
Chemical component information

ChemComp-Y01:
CHOLESTEROL HEMISUCCINATE

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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
GridDetails: unspecified
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 7.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: EMDB MAP
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 277988
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: ANGULAR RECONSTITUTION

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