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- EMDB-25852: Cryo-EM structure of GluN1b-2B NMDAR in complex with Fab5 in non-... -

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Basic information

Entry
Database: EMDB / ID: EMD-25852
TitleCryo-EM structure of GluN1b-2B NMDAR in complex with Fab5 in non-active2-like conformation
Map data
Sample
  • Complex: GluN1b-2B NMDAR complexed to Fab5
    • Protein or peptide: Glutamate receptor ionotropic, NMDA 1
    • Protein or peptide: Glutamate receptor ionotropic, NMDA 2B
    • Protein or peptide: Fab5 heavy chain
    • Protein or peptide: Fab5 light chain
Function / homology
Function and homology information


neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential / cellular response to curcumin / cellular response to corticosterone stimulus / cellular response to magnesium starvation / NMDA selective glutamate receptor signaling pathway / regulation of postsynaptic cytosolic calcium ion concentration / sensory organ development / sensitization / pons maturation / regulation of cell communication ...neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential / cellular response to curcumin / cellular response to corticosterone stimulus / cellular response to magnesium starvation / NMDA selective glutamate receptor signaling pathway / regulation of postsynaptic cytosolic calcium ion concentration / sensory organ development / sensitization / pons maturation / regulation of cell communication / positive regulation of Schwann cell migration / EPHB-mediated forward signaling / neurotransmitter receptor activity involved in regulation of postsynaptic cytosolic calcium ion concentration / Assembly and cell surface presentation of NMDA receptors / olfactory learning / regulation of protein kinase A signaling / conditioned taste aversion / protein localization to postsynaptic membrane / dendritic branch / regulation of respiratory gaseous exchange / propylene metabolic process / response to glycine / apical dendrite / response to other organism / fear response / response to methylmercury / voltage-gated monoatomic cation channel activity / positive regulation of cysteine-type endopeptidase activity / response to morphine / glutamate-gated calcium ion channel activity / cellular response to dsRNA / response to carbohydrate / regulation of monoatomic cation transmembrane transport / negative regulation of dendritic spine maintenance / interleukin-1 receptor binding / cellular response to lipid / positive regulation of glutamate secretion / NMDA glutamate receptor activity / response to growth hormone / NMDA selective glutamate receptor complex / RAF/MAP kinase cascade / Synaptic adhesion-like molecules / parallel fiber to Purkinje cell synapse / calcium ion transmembrane import into cytosol / response to manganese ion / protein heterotetramerization / glutamate binding / positive regulation of reactive oxygen species biosynthetic process / neuromuscular process / regulation of synapse assembly / action potential / glycine binding / positive regulation of calcium ion transport into cytosol / male mating behavior / regulation of dendrite morphogenesis / regulation of axonogenesis / heterocyclic compound binding / receptor clustering / suckling behavior / startle response / behavioral response to pain / regulation of neuronal synaptic plasticity / response to amine / monoatomic cation transmembrane transport / regulation of MAPK cascade / social behavior / small molecule binding / associative learning / response to magnesium ion / positive regulation of excitatory postsynaptic potential / monoatomic cation transport / ligand-gated monoatomic ion channel activity / excitatory synapse / extracellularly glutamate-gated ion channel activity / cellular response to organic cyclic compound / Unblocking of NMDA receptors, glutamate binding and activation / neuron development / positive regulation of dendritic spine maintenance / glutamate receptor binding / regulation of postsynaptic membrane potential / behavioral fear response / multicellular organismal response to stress / phosphatase binding / calcium ion homeostasis / D2 dopamine receptor binding / cellular response to manganese ion / prepulse inhibition / long-term memory / detection of mechanical stimulus involved in sensory perception of pain / positive regulation of synaptic transmission / regulation of neuron apoptotic process / response to electrical stimulus / response to mechanical stimulus / glutamate-gated receptor activity / synaptic cleft / presynaptic active zone membrane / response to fungicide / cellular response to forskolin / monoatomic cation channel activity / sensory perception of pain
Similarity search - Function
Glutamate [NMDA] receptor, epsilon subunit, C-terminal / N-methyl D-aspartate receptor 2B3 C-terminus / Bacterial extracellular solute-binding proteins, family 3 / Solute-binding protein family 3/N-terminal domain of MltF / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / : / Ligand-gated ion channel / Ionotropic glutamate receptor, L-glutamate and glycine-binding domain / Ligated ion channel L-glutamate- and glycine-binding site ...Glutamate [NMDA] receptor, epsilon subunit, C-terminal / N-methyl D-aspartate receptor 2B3 C-terminus / Bacterial extracellular solute-binding proteins, family 3 / Solute-binding protein family 3/N-terminal domain of MltF / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / : / Ligand-gated ion channel / Ionotropic glutamate receptor, L-glutamate and glycine-binding domain / Ligated ion channel L-glutamate- and glycine-binding site / Ionotropic glutamate receptor / Eukaryotic homologues of bacterial periplasmic substrate binding proteins. / Receptor, ligand binding region / Receptor family ligand binding region / Periplasmic binding protein-like I
Similarity search - Domain/homology
Glutamate receptor ionotropic, NMDA 1 / Glutamate receptor ionotropic, NMDA 2B
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat) / Mouse (mice)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.45 Å
AuthorsTajima N / Furukawa H
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Mental Health (NIH/NIMH)MH085926 United States
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)NS111745 United States
CitationJournal: Nat Commun / Year: 2022
Title: Development and characterization of functional antibodies targeting NMDA receptors.
Authors: Nami Tajima / Noriko Simorowski / Remy A Yovanno / Michael C Regan / Kevin Michalski / Ricardo Gómez / Albert Y Lau / Hiro Furukawa /
Abstract: N-methyl-D-aspartate receptors (NMDARs) are critically involved in basic brain functions and neurodegeneration as well as tumor invasiveness. Targeting specific subtypes of NMDARs with distinct ...N-methyl-D-aspartate receptors (NMDARs) are critically involved in basic brain functions and neurodegeneration as well as tumor invasiveness. Targeting specific subtypes of NMDARs with distinct activities has been considered an effective therapeutic strategy for neurological disorders and diseases. However, complete elimination of off-target effects of small chemical compounds has been challenging and thus, there is a need to explore alternative strategies for targeting NMDAR subtypes. Here we report identification of a functional antibody that specifically targets the GluN1-GluN2B NMDAR subtype and allosterically down-regulates ion channel activity as assessed by electrophysiology. Through biochemical analysis, x-ray crystallography, single-particle electron cryomicroscopy, and molecular dynamics simulations, we show that this inhibitory antibody recognizes the amino terminal domain of the GluN2B subunit and increases the population of the non-active conformational state. The current study demonstrates that antibodies may serve as specific reagents to regulate NMDAR functions for basic research and therapeutic objectives.
History
DepositionJan 5, 2022-
Header (metadata) releaseMar 2, 2022-
Map releaseMar 2, 2022-
UpdateMar 2, 2022-
Current statusMar 2, 2022Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 3
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 3
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  • Surface view with fitted model
  • Atomic models: PDB-7tet
  • Surface level: 3
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Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_25852.png

Downloads & links

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Map

FileDownload / File: emd_25852.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.37 Å
Density
Contour LevelBy AUTHOR: 3.0 / Movie #1: 3
Minimum - Maximum-1.5914135 - 7.9536366
Average (Standard dev.)0.04383727 (±0.42002624)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 350.72 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.371.371.37
M x/y/z256256256
origin x/y/z0.0000.0000.000
length x/y/z350.720350.720350.720
α/β/γ90.00090.00090.000
start NX/NY/NZ535455
NX/NY/NZ134138134
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS256256256
D min/max/mean-1.5917.9540.044

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Supplemental data

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Additional map: sharpened

Fileemd_25852_additional_1.map
Annotationsharpened
Projections & Slices
AxesZYX

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Slices (1/2)
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Histogram

Histogram (log scale)

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Half map: #1

Fileemd_25852_half_map_1.map
Projections & Slices
AxesZYX

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Histogram (log scale)

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Half map: #2

Fileemd_25852_half_map_2.map
Projections & Slices
AxesZYX

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Sample components

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Entire : GluN1b-2B NMDAR complexed to Fab5

EntireName: GluN1b-2B NMDAR complexed to Fab5
Components
  • Complex: GluN1b-2B NMDAR complexed to Fab5
    • Protein or peptide: Glutamate receptor ionotropic, NMDA 1
    • Protein or peptide: Glutamate receptor ionotropic, NMDA 2B
    • Protein or peptide: Fab5 heavy chain
    • Protein or peptide: Fab5 light chain

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Supramolecule #1: GluN1b-2B NMDAR complexed to Fab5

SupramoleculeName: GluN1b-2B NMDAR complexed to Fab5 / type: complex / Chimera: Yes / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Rattus norvegicus (Norway rat)

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Macromolecule #1: Glutamate receptor ionotropic, NMDA 1

MacromoleculeName: Glutamate receptor ionotropic, NMDA 1 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 96.944891 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MSTMHLLTFA LLFSCSFARA ASDPKIVNIG AVLSTRKHEQ MFREAVNQAN KRHGSWKIQL QATSVTHKPN AIQMALSVCE DLISSQVYA ILVSHPPTPN DHFTPTPVSY TAGFYRIPVL GLTTRMSIYS DKSIHLSFLR TVPPYSHQSS VWFEMMRVYN W NHIILLVS ...String:
MSTMHLLTFA LLFSCSFARA ASDPKIVNIG AVLSTRKHEQ MFREAVNQAN KRHGSWKIQL QATSVTHKPN AIQMALSVCE DLISSQVYA ILVSHPPTPN DHFTPTPVSY TAGFYRIPVL GLTTRMSIYS DKSIHLSFLR TVPPYSHQSS VWFEMMRVYN W NHIILLVS DDHEGRAAQK RLETLLEERE SKSKKRNYEN LDQLSYDNKR GPKAEKVLQF DPGTKNVTAL LMEARELEAR VI ILSASED DAATVYRAAA MLDMTGSGYV WLVGEREISG NALRYAPDGI IGLQLINGKN ESAHISDAVG VVAQAVHELL EKE NITDPP RGCVGNTNIW KTGPLFKRVL MSSKYADGVT GRVEFNEDGD RKFAQYSIMN LQNRKLVQVG IYNGTHVIPN DRKI IWPGG ETEKPRGYQM STRLKIVTIH QEPFVYVKPT MSDGTCKEEF TVNGDPVKKV ICTGPNDTSP GSPRHTVPQC CYGFC IDLL IKLARTMQFT YEVHLVADGK FGTQERVQNS NKKEWNGMMG ELLSGQADMI VAPLTINNER AQYIEFSKPF KYQGLT ILV KKEIPRSTLD SFMQPFQSTL WLLVGLSVHV VAVMLYLLDR FSPFGRFKVN SQSESTDALT LSSAMWFSWG VLLNSGI GE GAPRSFSARI LGMVWAGFAM IIVASYTANL AAFLVLDRPE ERITGINDPR LRNPSDKFIY ATVKQSSVDI YFRRQVEL S TMYRHMEKHN YESAAEAIQA VRDNKLHAFI WDSAVLEFEA SQKCDLVTTG ELFFRSGFGI GMRKDSPWKQ QVSLSILKS HENGFMEDLD KTWVRYQECD SRSNAPATLT CENMAGVFML VAGGIVAGIF LIFIEIAYKS RA

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Macromolecule #2: Glutamate receptor ionotropic, NMDA 2B

MacromoleculeName: Glutamate receptor ionotropic, NMDA 2B / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 98.79782 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGTMRLFLLA VLFLFSFARA TGWSHPQFEK GGGSGGGSGG SAWSHPQFEK GALVPRGRSQ KSPPSIGIAV ILVGTSDEVA IKDAHEKDD FHHLSVVPRV ELVAMNETDP KSIITRICDL MSDRKIQGVV FADDTDQEAI AQILDFISAQ TLTPILGIHG G SSMIMADK ...String:
MGTMRLFLLA VLFLFSFARA TGWSHPQFEK GGGSGGGSGG SAWSHPQFEK GALVPRGRSQ KSPPSIGIAV ILVGTSDEVA IKDAHEKDD FHHLSVVPRV ELVAMNETDP KSIITRICDL MSDRKIQGVV FADDTDQEAI AQILDFISAQ TLTPILGIHG G SSMIMADK DESSMFFQFG PSIEQQASVM LNIMEEYDWY IFSIVTTYFP GYQDFVNKIR STIENSFVGW ELEEVLLLDM SL DDGDSKI QNQLKKLQSP IILLYCTKEE ATYIFEVANS VGLTGYGYTW IVPSLVAGDT DTVPSEFPTG LISVSYDEWD YGL PARVRD GIAIITTAAS DMLSEHSFIP EPKSSCYNTH EKRIYQSNML NRYLINVTFE GRDLSFSEDG YQMHPKLVII LLNK ERKWE RVGKWKDKSL QMKYYVWPRM CPETEEQEDD HLSIVTLEEA PFVIVESVDP LSGTCMRNTV PCQKRIISEN KTDEE PGYI KKCCKGFCID ILKKISKSVK FTYDLYLVTN GKHGKKINGT WNGMIGEVVM KRAYMAVGSL TINEERSEVV DFSVPF IET GISVMVSRSN GTVSPSAFLE PFSACVWVMM FVMLLIVSAV AVFVFEYFSP VGYNRSLADG REPGGPSVTI GKAIWLL WG LVFNNSVPVQ NPKGTTSKIM VSVWAFFAVI FLASYTANLA AFMIQEEYVD QVSGLSDKKF QRPNDFSPPF RFGTVPNG S TERNIRNNYA EMHAYMGKFN QRGVDDALLS LKTGKLDAFI YDAAVLNYMA GRDEGCKLVT IGSGKVFAST GYGIAIQKD SGWKRQVDLA ILQLFGDGEM EELEALWLTG ICHNEKNEVM SSQLDIDNMA GVFYMLGAAM ALSLITFISE HLFYWQFRHS FMG

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Macromolecule #3: Fab5 heavy chain

MacromoleculeName: Fab5 heavy chain / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Mouse (mice)
Molecular weightTheoretical: 23.844684 KDa
SequenceString: DVKLQESGGG SVKLGGSLKL SCVVSGFTFS TYYMSWVRQT PEKRLELVAV INSNGGNTYY PDNVKGRFTI SRDNAENTLY LQMSSLKSE DTALYYCARR DYDGFAMDYW GQGTSVTVSS AKTTPPSVYP LAPGSAAQTN SMVTLGCLVK GYFPEPVTVT W NSGSLSSG ...String:
DVKLQESGGG SVKLGGSLKL SCVVSGFTFS TYYMSWVRQT PEKRLELVAV INSNGGNTYY PDNVKGRFTI SRDNAENTLY LQMSSLKSE DTALYYCARR DYDGFAMDYW GQGTSVTVSS AKTTPPSVYP LAPGSAAQTN SMVTLGCLVK GYFPEPVTVT W NSGSLSSG VHTFPAVLQS DLYTLSSSVT VPSSTWPSET VTCNVAHPAS STKVDKKIVP RDC

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Macromolecule #4: Fab5 light chain

MacromoleculeName: Fab5 light chain / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Mouse (mice)
Molecular weightTheoretical: 23.121395 KDa
SequenceString: DIQLTQSPAS LAVSLGQRAT ISCRASQSVS TSRYSYMHWY QHKPGQPPKL LIKYASNLES GVPARFSGSG SGTDFTLNIH PVEEEDTAT YYCQHSWENP YTFGGGTKLE IKRADAAPTV SIFPPSSEQL TSGGASVVCF LNNFYPKDIN VKWKIDGSER Q NGVLNSWT ...String:
DIQLTQSPAS LAVSLGQRAT ISCRASQSVS TSRYSYMHWY QHKPGQPPKL LIKYASNLES GVPARFSGSG SGTDFTLNIH PVEEEDTAT YYCQHSWENP YTFGGGTKLE IKRADAAPTV SIFPPSSEQL TSGGASVVCF LNNFYPKDIN VKWKIDGSER Q NGVLNSWT DQDSKDSTYS MSSTLTLTKD EYERHNSYTC EATHKTSTSP I

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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
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: OTHER / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.5 µm
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 60.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.45 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 74886

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