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- EMDB-21673: GluN1b-GluN2B NMDA receptor in non-active 2 conformation at 4 ang... -

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Basic information

Entry
Database: EMDB / ID: EMD-21673
TitleGluN1b-GluN2B NMDA receptor in non-active 2 conformation at 4 angstrom resolution
Map dataB_factor sharpened map (-90)
Sample
  • Complex: NMDA receptor GluN1b/2B functional ion channel complex
    • Protein or peptide: Glutamate receptor ionotropic, NMDA 1
    • Protein or peptide: Glutamate receptor ionotropic, NMDA 2B
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
Function / homology
Function and homology information


pons maturation / positive regulation of Schwann cell migration / regulation of cell communication / EPHB-mediated forward signaling / Assembly and cell surface presentation of NMDA receptors / olfactory learning / dendritic branch / conditioned taste aversion / regulation of respiratory gaseous exchange / protein localization to postsynaptic membrane ...pons maturation / positive regulation of Schwann cell migration / regulation of cell communication / EPHB-mediated forward signaling / Assembly and cell surface presentation of NMDA receptors / olfactory learning / dendritic branch / conditioned taste aversion / regulation of respiratory gaseous exchange / protein localization to postsynaptic membrane / propylene metabolic process / response to glycine / regulation of monoatomic cation transmembrane transport / voltage-gated monoatomic cation channel activity / Synaptic adhesion-like molecules / NMDA glutamate receptor activity / RAF/MAP kinase cascade / parallel fiber to Purkinje cell synapse / NMDA selective glutamate receptor complex / response to morphine / calcium ion transmembrane import into cytosol / glutamate binding / neuromuscular process / protein heterotetramerization / regulation of synapse assembly / positive regulation of calcium ion transport into cytosol / positive regulation of reactive oxygen species biosynthetic process / glycine binding / regulation of axonogenesis / male mating behavior / regulation of dendrite morphogenesis / suckling behavior / startle response / response to amine / monoatomic cation transmembrane transport / regulation of neuronal synaptic plasticity / associative learning / monoatomic cation transport / social behavior / excitatory synapse / ligand-gated monoatomic ion channel activity / positive regulation of excitatory postsynaptic potential / cellular response to glycine / positive regulation of dendritic spine maintenance / Unblocking of NMDA receptors, glutamate binding and activation / cellular response to manganese ion / phosphatase binding / glutamate receptor binding / long-term memory / regulation of neuron apoptotic process / prepulse inhibition / monoatomic cation channel activity / calcium ion homeostasis / glutamate-gated receptor activity / synaptic cleft / response to fungicide / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / sensory perception of pain / response to amphetamine / ionotropic glutamate receptor signaling pathway / hippocampal mossy fiber to CA3 synapse / positive regulation of synaptic transmission, glutamatergic / regulation of membrane potential / adult locomotory behavior / excitatory postsynaptic potential / learning / synaptic transmission, glutamatergic / synaptic membrane / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / postsynaptic density membrane / regulation of long-term neuronal synaptic plasticity / visual learning / calcium channel activity / regulation of synaptic plasticity / terminal bouton / response to organic cyclic compound / cerebral cortex development / memory / synaptic vesicle membrane / response to calcium ion / intracellular calcium ion homeostasis / neuron cellular homeostasis / calcium ion transport / rhythmic process / synaptic vesicle / signaling receptor activity / presynaptic membrane / amyloid-beta binding / protein-containing complex assembly / chemical synaptic transmission / postsynaptic membrane / response to ethanol / negative regulation of neuron apoptotic process / transcription by RNA polymerase II / dendritic spine / postsynaptic density / learning or memory
Similarity search - Function
Gliding motility-associated protein, GldL / GldL N-terminal domain / : / : / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / Ionotropic glutamate receptor, L-glutamate and glycine-binding domain / Ligated ion channel L-glutamate- and glycine-binding site / Ligand-gated ion channel / : ...Gliding motility-associated protein, GldL / GldL N-terminal domain / : / : / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / Ionotropic glutamate receptor, L-glutamate and glycine-binding domain / Ligated ion channel L-glutamate- and glycine-binding site / Ligand-gated ion channel / : / 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 / Gliding motility protein GldL
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.99 Å
AuthorsChou T / Tajima N / Furukawa H
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)NS111745 United States
National Institutes of Health/National Institute of Mental Health (NIH/NIMH)MH085926 United States
CitationJournal: Cell / Year: 2020
Title: Structural Basis of Functional Transitions in Mammalian NMDA Receptors.
Authors: Tsung-Han Chou / Nami Tajima / Annabel Romero-Hernandez / Hiro Furukawa /
Abstract: Excitatory neurotransmission meditated by glutamate receptors including N-methyl-D-aspartate receptors (NMDARs) is pivotal to brain development and function. NMDARs are heterotetramers composed of ...Excitatory neurotransmission meditated by glutamate receptors including N-methyl-D-aspartate receptors (NMDARs) is pivotal to brain development and function. NMDARs are heterotetramers composed of GluN1 and GluN2 subunits, which bind glycine and glutamate, respectively, to activate their ion channels. Despite importance in brain physiology, the precise mechanisms by which activation and inhibition occur via subunit-specific binding of agonists and antagonists remain largely unknown. Here, we show the detailed patterns of conformational changes and inter-subunit and -domain reorientation leading to agonist-gating and subunit-dependent competitive inhibition by providing multiple structures in distinct ligand states at 4 Å or better. The structures reveal that activation and competitive inhibition by both GluN1 and GluN2 antagonists occur by controlling the tension of the linker between the ligand-binding domain and the transmembrane ion channel of the GluN2 subunit. Our results provide detailed mechanistic insights into NMDAR pharmacology, activation, and inhibition, which are fundamental to the brain physiology.
History
DepositionApr 8, 2020-
Header (metadata) releaseAug 5, 2020-
Map releaseAug 5, 2020-
UpdateAug 5, 2020-
Current statusAug 5, 2020Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 4
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 4
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6whr
  • Surface level: 4
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_21673.png

Downloads & links

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Map

FileDownload / File: emd_21673.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationB_factor sharpened map (-90)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.37 Å/pix.
x 256 pix.
= 350.72 Å		1.37 Å/pix.
x 256 pix.
= 350.72 Å		1.37 Å/pix.
x 256 pix.
= 350.72 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.37 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 2.3 / Movie #1: 4
Minimum - Maximum-8.081946 - 18.9988
Average (Standard dev.)0.015484987 (±0.6839368)
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/NZ-200-200-200
NX/NY/NZ401401401
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS256256256
D min/max/mean-8.08218.9990.015

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Supplemental data

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Additional map: Unsharpened map

Fileemd_21673_additional.map
AnnotationUnsharpened 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 : NMDA receptor GluN1b/2B functional ion channel complex

EntireName: NMDA receptor GluN1b/2B functional ion channel complex
Components
  • Complex: NMDA receptor GluN1b/2B functional ion channel complex
    • Protein or peptide: Glutamate receptor ionotropic, NMDA 1
    • Protein or peptide: Glutamate receptor ionotropic, NMDA 2B
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: NMDA receptor GluN1b/2B functional ion channel complex

SupramoleculeName: NMDA receptor GluN1b/2B functional ion channel complex
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Rattus norvegicus (Norway rat)
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)

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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: 108.085633 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 LIFIEIAYKR HKDARRKQMQ LAFAAVNVWR KNLQDRKSG RAEPDPKKKA TFRAITSTLA SSFKRRRSSK DTSTGGGRGA LQNQKDTVLP RRAIEREEGQ LQLCSRHRES

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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: 98.845859 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 REPGGPSFTI 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 #4: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 4 / Number of copies: 10 / 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: 7.5
GridPretreatment - Type: GLOW DISCHARGE / Details: unspecified
VitrificationCryogen name: ETHANE / Chamber humidity: 85 % / Chamber temperature: 295 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 64.5 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: OTHER / Details: Ab initio reconstruction
Final reconstructionApplied symmetry - Point group: C2 (2 fold cyclic) / Resolution.type: BY AUTHOR / Resolution: 3.99 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cisTEM (ver. 1.0.0) / Number images used: 134688
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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