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- EMDB-47007: Human muscle nAChR with two fab1b-bound -

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Basic information

Entry
Database: EMDB / ID: EMD-47007
TitleHuman muscle nAChR with two fab1b-bound
Map data
Sample
  • Complex: Human muscle nicotinic acetylcholine receptor with MG fabs
    • Protein or peptide: Acetylcholine receptor subunit alpha
    • Protein or peptide: Acetylcholine receptor subunit beta
    • Protein or peptide: Acetylcholine receptor subunit delta
    • Protein or peptide: Acetylcholine receptor subunit epsilon
    • Protein or peptide: Fab1b heavy chain
    • Protein or peptide: Fab1b light chain
  • Ligand: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate
  • Ligand: CHOLESTEROL
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
Keywordshuman muscle / nicotinic acetylcholine receptor / MEMBRANE PROTEIN
Function / homology
Function and homology information


postsynaptic membrane organization / skeletal muscle tissue growth / musculoskeletal movement / Highly sodium permeable postsynaptic acetylcholine nicotinic receptors / Highly calcium permeable nicotinic acetylcholine receptors / Highly calcium permeable postsynaptic nicotinic acetylcholine receptors / acetylcholine receptor activity / acetylcholine-gated channel complex / neuromuscular synaptic transmission / behavioral response to nicotine ...postsynaptic membrane organization / skeletal muscle tissue growth / musculoskeletal movement / Highly sodium permeable postsynaptic acetylcholine nicotinic receptors / Highly calcium permeable nicotinic acetylcholine receptors / Highly calcium permeable postsynaptic nicotinic acetylcholine receptors / acetylcholine receptor activity / acetylcholine-gated channel complex / neuromuscular synaptic transmission / behavioral response to nicotine / acetylcholine-gated monoatomic cation-selective channel activity / muscle cell development / acetylcholine binding / nervous system process / synaptic transmission, cholinergic / monoatomic cation transmembrane transporter activity / acetylcholine receptor signaling pathway / postsynaptic specialization membrane / muscle cell cellular homeostasis / neuromuscular process / neuromuscular junction development / ligand-gated monoatomic ion channel activity / monoatomic cation transport / membrane depolarization / skeletal muscle contraction / neuronal action potential / muscle contraction / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / regulation of membrane potential / response to nicotine / neuromuscular junction / neuron cellular homeostasis / transmembrane signaling receptor activity / channel activity / postsynaptic membrane / neuron projection / synapse / cell surface / signal transduction / plasma membrane
Similarity search - Function
Nicotinic acetylcholine receptor / Neurotransmitter-gated ion-channel transmembrane domain / Neurotransmitter-gated ion-channel transmembrane region / Neurotransmitter-gated ion-channel, conserved site / Neurotransmitter-gated ion-channels signature. / Neurotransmitter-gated ion-channel transmembrane domain superfamily / Neuronal acetylcholine receptor / Neurotransmitter-gated ion-channel / Neurotransmitter-gated ion-channel ligand-binding domain / Neurotransmitter-gated ion-channel ligand-binding domain superfamily / Neurotransmitter-gated ion-channel ligand binding domain
Similarity search - Domain/homology
Acetylcholine receptor subunit alpha / Acetylcholine receptor subunit beta / Acetylcholine receptor subunit epsilon / Acetylcholine receptor subunit delta
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.19 Å
AuthorsLi H / Hibbs RE
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS) United States
CitationJournal: To Be Published
Title: Structure of human muscle AChR with two fab1b-bound
Authors: Li H / Hibbs RE
History
DepositionSep 13, 2024-
Header (metadata) releaseApr 9, 2025-
Map releaseApr 9, 2025-
UpdateMay 14, 2025-
Current statusMay 14, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_47007.png

Downloads & links

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Map

FileDownload / File: emd_47007.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.94 Å/pix.
x 400 pix.
= 374. Å		0.94 Å/pix.
x 400 pix.
= 374. Å		0.94 Å/pix.
x 400 pix.
= 374. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.935 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.09
Minimum - Maximum-0.62191933 - 1.232021
Average (Standard dev.)-0.00007623092 (±0.025482366)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions400400400
Spacing400400400
CellA=B=C: 374.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_47007_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_47007_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Human muscle nicotinic acetylcholine receptor with MG fabs

EntireName: Human muscle nicotinic acetylcholine receptor with MG fabs
Components
  • Complex: Human muscle nicotinic acetylcholine receptor with MG fabs
    • Protein or peptide: Acetylcholine receptor subunit alpha
    • Protein or peptide: Acetylcholine receptor subunit beta
    • Protein or peptide: Acetylcholine receptor subunit delta
    • Protein or peptide: Acetylcholine receptor subunit epsilon
    • Protein or peptide: Fab1b heavy chain
    • Protein or peptide: Fab1b light chain
  • Ligand: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate
  • Ligand: CHOLESTEROL
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: Human muscle nicotinic acetylcholine receptor with MG fabs

SupramoleculeName: Human muscle nicotinic acetylcholine receptor with MG fabs
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Acetylcholine receptor subunit alpha

MacromoleculeName: Acetylcholine receptor subunit alpha / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 51.889266 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MEPWPLLLLF SLCSAGLVLG SEHETRLVAK LFKDYSSVVR PVEDHRQVVE VTVGLQLIQL INVDEVNQIV TTNVRLKQQW VDYNLKWNP DDYGGVKKIH IPSEKIWRPD LVLYNNADGD FAIVKFTKVL LQYTGHITWT PPAIFKSYCE IIVTHFPFDE Q NCSMKLGT ...String:
MEPWPLLLLF SLCSAGLVLG SEHETRLVAK LFKDYSSVVR PVEDHRQVVE VTVGLQLIQL INVDEVNQIV TTNVRLKQQW VDYNLKWNP DDYGGVKKIH IPSEKIWRPD LVLYNNADGD FAIVKFTKVL LQYTGHITWT PPAIFKSYCE IIVTHFPFDE Q NCSMKLGT WTYDGSVVAI NPESDQPDLS NFMESGEWVI KESRGWKHSV TYSCCPDTPY LDITYHFVMQ RLPLYFIVNV II PCLLFSF LTGLVFYLPT DSGEKMTLSI SVLLSLTVFL LVIVELIPST SSAVPLIGKY MLFTMVFVIA SIIITVIVIN THH RSPSTH VMPNWVRKVF IDTIPNIMFF STMKRPSREK QDKKIFTEDI DISDISGKPG PPPMGFHSPL IKHPEVKSAI EGIK YIAET MKSDQESNNA AAEWKYVAMV MDHILLGVFM LVCIIGTLAV FAGRLIELNQ QG

UniProtKB: Acetylcholine receptor subunit alpha

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Macromolecule #2: Acetylcholine receptor subunit beta

MacromoleculeName: Acetylcholine receptor subunit beta / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 57.00041 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MTPGALLMLL GALGAPLAPG VRGSEAEGRL REKLFSGYDS SVRPAREVGD RVRVSVGLIL AQLISLNEKD EEMSTKVYLD LEWTDYRLS WDPAEHDGID SLRITAESVW LPDVVLLNNN DGNFDVALDI SVVVSSDGSV RWQPPGIYRS SCSIQVTYFP F DWQNCTMV ...String:
MTPGALLMLL GALGAPLAPG VRGSEAEGRL REKLFSGYDS SVRPAREVGD RVRVSVGLIL AQLISLNEKD EEMSTKVYLD LEWTDYRLS WDPAEHDGID SLRITAESVW LPDVVLLNNN DGNFDVALDI SVVVSSDGSV RWQPPGIYRS SCSIQVTYFP F DWQNCTMV FSSYSYDSSE VSLQTGLGPD GQGHQEIHIH EGTFIENGQW EIIHKPSRLI QPPGDPRGGR EGQRQEVIFY LI IRRKPLF YLVNVIAPCI LITLLAIFVF YLPPDAGEKM GLSIFALLTL TVFLLLLADK VPETSLSVPI IIKYLMFTMV LVT FSVILS VVVLNLHHRS PHTHQMPLWV RQIFIHKLPL YLRLKRPKPE RDLMPEPPHC SSPGSGWGRG TDEYFIRKPP SDFL FPKPN RFQPELSAPD LRRFIDGPNR AVALLPELRE VVSSISYIAR QLQEQEDHDA LKEDWQFVAM VVDRLFLWTF IIFTS VGTL VIFLDATYHL PPPDPFPSR

UniProtKB: Acetylcholine receptor subunit beta

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Macromolecule #3: Acetylcholine receptor subunit delta

MacromoleculeName: Acetylcholine receptor subunit delta / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 58.955805 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MEGPVLTLGL LAALAVCGSW GLNEEERLIR HLFQEKGYNK ELRPVAHKEE SVDVALALTL SNLISLKEVE ETLTTNVWIE HGWTDNRLK WNAEEFGNIS VLRLPPDMVW LPEIVLENNN DGSFQISYSC NVLVYHYGFV YWLPPAIFRS SCPISVTYFP F DWQNCSLK ...String:
MEGPVLTLGL LAALAVCGSW GLNEEERLIR HLFQEKGYNK ELRPVAHKEE SVDVALALTL SNLISLKEVE ETLTTNVWIE HGWTDNRLK WNAEEFGNIS VLRLPPDMVW LPEIVLENNN DGSFQISYSC NVLVYHYGFV YWLPPAIFRS SCPISVTYFP F DWQNCSLK FSSLKYTAKE ITLSLKQDAK ENRTYPVEWI IIDPEGFTEN GEWEIVHRPA RVNVDPRAPL DSPSRQDITF YL IIRRKPL FYIINILVPC VLISFMVNLV FYLPADSGEK TSVAISVLLA QSVFLLLISK RLPATSMAIP LIGKFLLFGM VLV TMVVVI CVIVLNIHFR TPSTHVLSEG VKKLFLETLP ELLHMSRPAE DGPSPGALVR RSSSLGYISK AEEYFLLKSR SDLM FEKQS ERHGLARRLT TARRPPASSE QAQQELFNEL KPAVDGANFI VNHMRDQNNY NEEKDSWNRV ARTVDRLCLF VVTPV MVVG TAWIFLQGVY NQPPPQPFPG DPYSYNVQDK RFI

UniProtKB: Acetylcholine receptor subunit delta

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Macromolecule #4: Acetylcholine receptor subunit epsilon

MacromoleculeName: Acetylcholine receptor subunit epsilon / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 54.743754 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MARAPLGVLL LLGLLGRGVG KNEELRLYHH LFNNYDPGSR PVREPEDTVT ISLKVTLTNL ISLNEKEETL TTSVWIGIDW QDYRLNYSK DDFGGIETLR VPSELVWLPE IVLENNIDGQ FGVAYDANVL VYEGGSVTWL PPAIYRSVCA VEVTYFPFDW Q NCSLIFRS ...String:
MARAPLGVLL LLGLLGRGVG KNEELRLYHH LFNNYDPGSR PVREPEDTVT ISLKVTLTNL ISLNEKEETL TTSVWIGIDW QDYRLNYSK DDFGGIETLR VPSELVWLPE IVLENNIDGQ FGVAYDANVL VYEGGSVTWL PPAIYRSVCA VEVTYFPFDW Q NCSLIFRS QTYNAEEVEF TFAVDNDGKT INKIDIDTEA YTENGEWAID FCPGVIRRHH GGATDGPGET DVIYSLIIRR KP LFYVINI IVPCVLISGL VLLAYFLPAQ AGGQKCTVSI NVLLAQTVFL FLIAQKIPET SLSVPLLGRF LIFVMVVATL IVM NCVIVL NVSQRTPTTH AMSPRLRHVL LELLPRLLGS PPPPEAPRAA SPPRRASSVG LLLRAEELIL KKPRSELVFE GQRH RQGTW TAAFCQSLGA AAPEVRCCVD AVNFVAESTR DQEATGEEVS DWVRMGNALD NICFWAALVL FSVGSSLIFL GAYFN RVPD LPYAPCIQP

UniProtKB: Acetylcholine receptor subunit epsilon

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Macromolecule #5: Fab1b heavy chain

MacromoleculeName: Fab1b heavy chain / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 28.252943 KDa
Recombinant expressionOrganism: Cricetulus griseus (Chinese hamster)
SequenceString: MDSKGSSQKG SRLLLLLVVS NLLLCQGVVS AQVQLVQSGA EMKKPGSSVK VSCKASGGSF GSYGIDWVRQ APGQGLEWMG GIMPKFDAP KYAEKFQGRL TITADRATNT AYMELSSLRF EDTAIYYCAR DEQPFYDSWR GLYWGQGTLV TVSSASTKGP S VFPLAPSS ...String:
MDSKGSSQKG SRLLLLLVVS NLLLCQGVVS AQVQLVQSGA EMKKPGSSVK VSCKASGGSF GSYGIDWVRQ APGQGLEWMG GIMPKFDAP KYAEKFQGRL TITADRATNT AYMELSSLRF EDTAIYYCAR DEQPFYDSWR GLYWGQGTLV TVSSASTKGP S VFPLAPSS KSTSGGTAAL GCLVKDYFPE PVTVSWNSGA LTSGVHTFPA VLQSSGLYSL SSVVTVPSSS LGTQTYICNV NH KPSNTKV DKKVEPKSCG SHHHHHH

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Macromolecule #6: Fab1b light chain

MacromoleculeName: Fab1b light chain / type: protein_or_peptide / ID: 6 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 26.005316 KDa
Recombinant expressionOrganism: Cricetulus griseus (Chinese hamster)
SequenceString: MGWSCIILFL VATATGVHGD IVMTQSPLSL PVTPGEPASI SCRSNQSLLH TKGYKYLNWY LQRPGQSPQV LIYFASNRAP GVPDRFSGS GSGTDFTLKI SRVEAEDVGV YYCMQGLQIP FTFGPGTKVD IKRTVAAPSV FIFPPSDEQL KSGTASVVCL L NNFYPREA ...String:
MGWSCIILFL VATATGVHGD IVMTQSPLSL PVTPGEPASI SCRSNQSLLH TKGYKYLNWY LQRPGQSPQV LIYFASNRAP GVPDRFSGS GSGTDFTLKI SRVEAEDVGV YYCMQGLQIP FTFGPGTKVD IKRTVAAPSV FIFPPSDEQL KSGTASVVCL L NNFYPREA KVQWKVDNAL QSGNSQESVT EQDSKDSTYS LSSTLTLSKA DYEKHKVYAC EVTHQGLSSP VTKSFNRGEC

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Macromolecule #10: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(tri...

MacromoleculeName: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate
type: ligand / ID: 10 / Number of copies: 4 / Formula: POV
Molecular weightTheoretical: 760.076 Da
Chemical component information

ChemComp-POV:
(2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate / phospholipid*YM

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Macromolecule #11: CHOLESTEROL

MacromoleculeName: CHOLESTEROL / type: ligand / ID: 11 / Number of copies: 4 / Formula: CLR
Molecular weightTheoretical: 386.654 Da
Chemical component information

ChemComp-CLR:
CHOLESTEROL

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Macromolecule #12: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 12 / Number of copies: 2 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

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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
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.4000000000000001 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: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.19 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 316138
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: ANGULAR RECONSTITUTION
FSC plot (resolution estimation)

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