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- PDB-7tes: Cryo-EM structure of GluN1b-2B NMDAR in complex with Fab5 in Non-... -

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Basic information

Entry
Database: PDB / ID: 7tes
TitleCryo-EM structure of GluN1b-2B NMDAR in complex with Fab5 in Non-active1 conformation
Components
  • Fab5 heavy chain
  • Fab5 light chain
  • Glutamate receptor ionotropic, NMDA 1
  • Glutamate receptor ionotropic, NMDA 2B
KeywordsSIGNALING PROTEIN/IMMUNE SYSTEM / channel / antibody / SIGNALING PROTEIN-IMMUNE SYSTEM complex
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 / regulation of postsynaptic cytosolic calcium ion concentration / sensory organ development / sensitization / pons maturation / regulation of cell communication / positive regulation of Schwann cell migration ...neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential / cellular response to curcumin / cellular response to corticosterone stimulus / cellular response to magnesium starvation / 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 / response to hydrogen sulfide / olfactory learning / regulation of protein kinase A signaling / conditioned taste aversion / dendritic branch / regulation of respiratory gaseous exchange / protein localization to postsynaptic membrane / response to other organism / positive regulation of inhibitory postsynaptic potential / apical dendrite / propylene metabolic process / response to glycine / regulation of ARF protein signal transduction / fear response / response to methylmercury / voltage-gated monoatomic cation channel activity / positive regulation of cysteine-type endopeptidase activity / cellular response to dsRNA / response to carbohydrate / negative regulation of dendritic spine maintenance / regulation of monoatomic cation transmembrane transport / interleukin-1 receptor binding / response to morphine / cellular response to lipid / positive regulation of glutamate secretion / response to growth hormone / NMDA glutamate receptor activity / Synaptic adhesion-like molecules / RAF/MAP kinase cascade / NMDA selective glutamate receptor complex / glutamate-gated calcium ion channel activity / parallel fiber to Purkinje cell synapse / NMDA selective glutamate receptor signaling pathway / response to manganese ion / calcium ion transmembrane import into cytosol / 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 / regulation of dendrite morphogenesis / male mating behavior / regulation of axonogenesis / heterocyclic compound binding / suckling behavior / startle response / behavioral response to pain / monoatomic cation transmembrane transport / regulation of neuronal synaptic plasticity / response to amine / receptor clustering / social behavior / regulation of MAPK cascade / associative learning / response to magnesium ion / positive regulation of excitatory postsynaptic potential / monoatomic cation transport / ligand-gated monoatomic ion channel activity / excitatory synapse / cellular response to organic cyclic compound / extracellularly glutamate-gated ion channel activity / cellular response to glycine / positive regulation of dendritic spine maintenance / small molecule binding / Unblocking of NMDA receptors, glutamate binding and activation / neuron development / regulation of postsynaptic membrane potential / behavioral fear response / phosphatase binding / glutamate receptor binding / postsynaptic density, intracellular component / calcium ion homeostasis / cellular response to manganese ion / D2 dopamine receptor binding / prepulse inhibition / multicellular organismal response to stress / long-term memory / detection of mechanical stimulus involved in sensory perception of pain / monoatomic cation channel activity / regulation of neuron apoptotic process / response to electrical stimulus / presynaptic active zone membrane / synaptic cleft / glutamate-gated receptor activity
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 ...: / : / 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)
Mus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.7 Å
AuthorsTajima, N. / Furukawa, H.
Funding support United States, 2items
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, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 2, 2022Provider: repository / Type: Initial release

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Structure visualization

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Assembly

Deposited unit
A: Glutamate receptor ionotropic, NMDA 1
B: Glutamate receptor ionotropic, NMDA 2B
C: Glutamate receptor ionotropic, NMDA 1
D: Glutamate receptor ionotropic, NMDA 2B
H: Fab5 heavy chain
L: Fab5 light chain
M: Fab5 heavy chain
N: Fab5 light chain


Theoretical massNumber of molelcules
Total (without water)486,8858
Polymers486,8858
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Glutamate receptor ionotropic, NMDA 1 / GluN1 / Glutamate [NMDA] receptor subunit zeta-1 / N-methyl-D-aspartate receptor subunit NR1 / NMD-R1


Mass: 96944.891 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Grin1, Nmdar1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P35439
#2: Protein Glutamate receptor ionotropic, NMDA 2B / GluN2B / Glutamate [NMDA] receptor subunit epsilon-2 / N-methyl D-aspartate receptor subtype 2B / ...GluN2B / Glutamate [NMDA] receptor subunit epsilon-2 / N-methyl D-aspartate receptor subtype 2B / NMDAR2B / NR2B


Mass: 98797.820 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Grin2b / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q00960
#3: Antibody Fab5 heavy chain


Mass: 23844.684 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Mus musculus (house mouse)
#4: Antibody Fab5 light chain


Mass: 23855.256 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Mus musculus (house mouse)

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: GluN1b-2B NMDAR complexed to Fab5 / Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES
Source (natural)Organism: Rattus norvegicus (Norway rat)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: OTHER / Nominal defocus max: 3000 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING ONLY
3D reconstructionResolution: 4.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 53467 / Symmetry type: POINT

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