SAXSdb — 9unr

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Glutamate receptor ionotropic, NMDA 1

OrganismNot specified

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric（4） Consistent with protein copy count	Chain A； UniProt 25–843 Chain C； UniProt 25–843	Not recorded	Glutamate receptor ionotropic, NMDA 2A × 1 （P35436） Glutamate receptor ionotropic, NMDA 2B × 1 （Q01097） NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 19 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer：pH 8 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.98 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 9UNR	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
9DA9 Crystal structure of GluN1/GluN2A agonist-binding domains in complex with 7CKA and glutamate Deposited 2024-08-22	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 394–800（407 aa）	Not recorded	CKA 7-Chlorokynurenic acid × 1 GLU GLUTAMIC ACID × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.2 M ammonium acetate and 14-18% PEG 4000	Resolution 2.05 Å R-free 0.228
9PZS Native GluN1/GluN2A/GluN2B in complex with 5F11 and 3D2 Fabs (class 1), glycine and glutamate bound state Deposited 2025-08-11	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 10 PDB declaration: decameric	Chain A 1–938（938 aa） Chain C 1–938（938 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.20 Å
9PZT Native GluN1/GluN2A in complex with 5F11 and 3D2 Fabs (class 3), glycine and glutamate-bound state Deposited 2025-08-11	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: 12-meric	Chain A 1–938（938 aa） Chain C 1–938（938 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 6.14 Å
9PZU Native GluN1/GluN2B in complex with 5F11 Fab (class 4), glycine and glutamate-bound state Deposited 2025-08-11	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric	Chain A 1–938（938 aa） Chain C 1–938（938 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 5.36 Å
9PZV Native GluN1/GluN2A in complex with 5F11 and 3D2 Fabs, local ATD dimer Deposited 2025-08-11	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric	Chain A 1–938（938 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 9	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.92 Å
9UN2 native NMDAR receptor-GluN1/N2B in the inactive state Deposited 2025-04-23	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 26–844（819 aa） Chain C 26–844（819 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 17	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
9UN3 native NMDA receptor-GluN1/N2B in the open state Deposited 2025-04-23	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 25–841（817 aa） Chain C 25–841（817 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 24 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.37 Å
9UNJ native NMDA receptor-GluN1/N2A-S1 in closed state Deposited 2025-04-23	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 25–837（813 aa） Chain C 25–837（813 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 13 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.93 Å
9UNK native NMDA receptor-GluN1/N2B in the closed state Deposited 2025-04-23	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 24–844（821 aa） Chain C 24–844（821 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 32 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.37 Å
9UNM native NMDA receptor-GluN1/N2A-S2 in the closed state Deposited 2025-04-23	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 27–837（811 aa） Chain C 27–837（811 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 11 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 6.37 Å
9UNN native NMDA receptor-GluN1/N2A-S3 in the closed state Deposited 2025-04-24	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 25–840（816 aa） Chain C 25–840（816 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 25 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.29 Å
9UNO native NMDA receptor-GluN1/N2A in the inactive state Deposited 2025-04-24	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 25–837（813 aa） Chain C 25–837（813 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 23 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.55 Å
9UNP native NMDA receptor-GluN1/N2A/N2B-S2 in the closed state Deposited 2025-04-24	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 24–844（821 aa） Chain C 24–844（821 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 16 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.27 Å
9UNQ native NMDA receptor-GluN1/N2A/2B in inactive state Deposited 2025-04-24	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 25–842（818 aa） Chain C 25–842（818 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 20 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.20 Å

14 other PDB entries and 14 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	NMDZ1_MOUSE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–819； UniProt 25–843 Author chain C； PDBConstruct 1–819； UniProt 25–843

Glutamate receptor ionotropic, NMDA 2A

OrganismNot specified

UniProt P35436

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric（4） Consistent with protein copy count	Chain B； UniProt 33–841	Not recorded	Glutamate receptor ionotropic, NMDA 1 × 2 （P35438） Glutamate receptor ionotropic, NMDA 2B × 1 （Q01097） NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 19 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer：pH 8 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.98 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 9UNR	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
9PZS Native GluN1/GluN2A/GluN2B in complex with 5F11 and 3D2 Fabs (class 1), glycine and glutamate bound state Deposited 2025-08-11	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 10 PDB declaration: decameric	Chain B 1–1464（1464 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.20 Å
9PZT Native GluN1/GluN2A in complex with 5F11 and 3D2 Fabs (class 3), glycine and glutamate-bound state Deposited 2025-08-11	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: 12-meric	Chain B 1–1464（1464 aa） Chain D 1–1464（1464 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 6.14 Å
9PZV Native GluN1/GluN2A in complex with 5F11 and 3D2 Fabs, local ATD dimer Deposited 2025-08-11	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric	Chain B 1–1464（1464 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 9	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.92 Å
9UNJ native NMDA receptor-GluN1/N2A-S1 in closed state Deposited 2025-04-23	Different construct Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 33–841（809 aa） Chain D 33–841（809 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 13 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.93 Å
9UNM native NMDA receptor-GluN1/N2A-S2 in the closed state Deposited 2025-04-23	Different construct Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 32–839（808 aa） Chain D 32–839（808 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 11 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 6.37 Å
9UNN native NMDA receptor-GluN1/N2A-S3 in the closed state Deposited 2025-04-24	Different construct Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 32–843（812 aa） Chain D 32–843（812 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 25 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.29 Å
9UNO native NMDA receptor-GluN1/N2A in the inactive state Deposited 2025-04-24	Different construct Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 33–841（809 aa） Chain D 33–841（809 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 23 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.55 Å
9UNP native NMDA receptor-GluN1/N2A/N2B-S2 in the closed state Deposited 2025-04-24	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 35–839（805 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 16 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.27 Å
9UNQ native NMDA receptor-GluN1/N2A/2B in inactive state Deposited 2025-04-24	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 34–841（808 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 20 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.20 Å

9 other PDB entries and 9 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	NMDE1_MOUSE
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–809； UniProt 33–841

Glutamate receptor ionotropic, NMDA 2B

OrganismNot specified

UniProt Q01097

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric（4） Consistent with protein copy count	Chain D； UniProt 34–841	Not recorded	Glutamate receptor ionotropic, NMDA 1 × 2 （P35438） Glutamate receptor ionotropic, NMDA 2A × 1 （P35436） NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 19 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer：pH 8 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.98 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 9UNR	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
9PZS Native GluN1/GluN2A/GluN2B in complex with 5F11 and 3D2 Fabs (class 1), glycine and glutamate bound state Deposited 2025-08-11	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 10 PDB declaration: decameric	Chain D 1–1482（1482 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.20 Å
9PZU Native GluN1/GluN2B in complex with 5F11 Fab (class 4), glycine and glutamate-bound state Deposited 2025-08-11	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric	Chain B 1–1482（1482 aa） Chain D 1–1482（1482 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 5.36 Å
9UN2 native NMDAR receptor-GluN1/N2B in the inactive state Deposited 2025-04-23	Different construct Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 34–842（809 aa） Chain D 34–842（809 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 17	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
9UN3 native NMDA receptor-GluN1/N2B in the open state Deposited 2025-04-23	Different construct Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 32–848（817 aa） Chain D 32–848（817 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 24 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.37 Å
9UNK native NMDA receptor-GluN1/N2B in the closed state Deposited 2025-04-23	Different construct Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 34–842（809 aa） Chain D 34–842（809 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 32 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.37 Å
9UNP native NMDA receptor-GluN1/N2A/N2B-S2 in the closed state Deposited 2025-04-24	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain D 32–842（811 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 16 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2 JC9 (2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.27 Å
9UNQ native NMDA receptor-GluN1/N2A/2B in inactive state Deposited 2025-04-24	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain D 32–842（811 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 20 GLY GLYCINE × 2 GLU GLUTAMIC ACID × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.20 Å

7 other PDB entries and 7 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	NMDE2_MOUSE
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain D； PDBConstruct 1–808； UniProt 34–841

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	9unr
Deposition date deposition_date	2025-04-24
Structure title title	native NMDA receptor-GluN1/N2A/N2B-S1 in the closed state
Keywords keywords	native, NMDA receptor, ionotropic ion channel, excitatory neurotransmitter, MEMBRANE PROTEIN; MEMBRANE PROTEIN
Experimental Method method	ELECTRON MICROSCOPY

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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	53.12 Å
Radius of gyration Rg (electron density) rg_electron	53.19 Å
Forward intensity I(0) i0	1594000000.00
Molecular weight molecular_weight	339920.0 kDa
Excluded volume excluded_volume	427920 Å³
Envelope volume envelope_volume	621600 Å³
Hydration-shell volume shell_volume	99408 Å³
Envelope diameter envelope_diameter	181.3 Å
Shell Rg shell_rg	54.81 Å
Envelope Rg envelope_rg	51.86 Å
Shape Rg shape_rg	53.19 Å
Total Rg total_rg	53.24 Å
Total atoms total_atoms	23939
Residues n_residues	3182
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	180.8 Å
Rg (real space) rg_real	53.05 Å
Rg uncertainty (real space) rg_real_error	1.66 Å
I(0) (real space) i0_real	1.5940e+09
I(0) uncertainty (real space) i0_real_error	3.2210e+07
Rg (reciprocal space) rg_reciprocal	53.17 Å
I(0) (reciprocal space) i0_reciprocal	1594000000.0000
Solution quality estimate total_estimate	0.8124
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	1
Primary peak position r_peak_primary	66.3 Å
Skewness Skewness skewness	0.259
Kurtosis Kurtosis kurtosis	-0.377
Angular range angular_range	— – 0.1500 Å⁻¹
Current regularization parameter α current_alpha	0.0002
Highest regularization parameter α highest_alpha	115700000.0000
Real-space data points n_real_points	31
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.856; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.988; Smooth: 0.000

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (7)

Entity 1 Entity 1 polymer

Description description	Glutamate receptor ionotropic, NMDA 1
Molecular weight formula_weight	92154.3 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,C
Atom count atom_count	23939

KIVNIGAVLSTRKHEQMFREAVNQANKRHGSWKIQLNATSVTHKPNAIQMALSVCEDLISSQVYAILVSHPPTPNDHFTPTPVSYTAGFYRIPVLGLTTRMSIYSDKSIHLSFLRTVPPYSHQSSVWFEMMRVYNWNHIILLVSDDHEGRAAQKRLETLLEERESKAEKVLQFDPGTKNVTALLMEARDLEARVIILSASEDDAATVYRAAAMLNMTGSGYVWLVGEREISGNALRYAPDGIIGLQLINGKNESAHISDAVGVVAQAVHELLEKENITDPPRGCVGNTNIWKTGPLFKRVLMSSKYADGVTGRVEFNEDGDRKFANYSIMNLQNRKLVQVGIYNGTHVIPNDRKIIWPGGETEKPRGYQMSTRLKIVTIHQEPFVYVKPTMSDGTCKEEFTVNGDPVKKVICTGPNDTSPGSPRHTVPQCCYGFCVDLLIKLARTMNFTYEVHLVADGKFGTQERVNNSNKKEWNGMMGELLSGQADMIVAPLTINNERAQYIEFSKPFKYQGLTILVKKEIPRSTLDSFMQPFQSTLWLLVGLSVHVVAVMLYLLDRFSPFGRFKVNSEEEEEDALTLSSAMWFSWGVLLNSGIGEGAPRSFSARILGMVWAGFAMIIVASYTANLAAFLVLDRPEERITGINDPRLRNPSDKFIYATVKQSSVDIYFRRQVELSTMYRHMEKHNYESAAEAIQAVRDNKLHAFIWDSAVLEFEASQKCDLVTTGELFFRSGFGIGMRKDSPWKQNVSLSILKSHENGFMEDLDKTWVRYQECDSRSNAPATLTFENMAGVFMLVAGGIVAGIFLIFIEIAYKRHKDA

Entity 2 Entity 2 polymer

Description description	Glutamate receptor ionotropic, NMDA 2A
Molecular weight formula_weight	90779.8 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

ALNIAVLLGHSHDVTERELRNLWGPEQATGLPLDVNVVALLMNRTDPKSLITHVCDLMSGARIHGLVFGDDTDQEAVAQMLDFISSQTFIPILGIHGGASMIMADKDPTSTFFQFGASIQQQATVMLKIMQDYDWHVFSLVTTIFPGYRDFISFIKTTVDNSFVGWDMQNVITLDTSFEDAKTQVQLKKIHSSVILLYCSKDEAVLILSEARSLGLTGYDFFWIVPSLVSGNTELIPKEFPSGLISVSYDDWDYSLEARVRDGLGILTTAASSMLEKFSYIPEAKASCYGQTEKPETPLHTLHQFMVNVTWDGKDLSFTEEGYQVHPRLVVIVLNKDREWEKVGKWENQTLSLRHAVWPRYKSFSDCEPDDNHLSIVTLEEAPFVIVEDIDPLTETCVRNTVPCRKFVKINNSTNEGMNVKKCCKGFCIDILKKLSRTVKFTYDLYLVTNGKHGKKVNNVWNGMIGEVVYQRAVMAVGSLTINEERSEVVDFSVPFVETGISVMVSRSNGTVSPSAFLEPFSASVWVMMFVMLLIVSAIAVFVFEYFSPVGYNRNLAKGKAPHGPSFTIGKAIWLLWGLVFNNSVPVQNPKGTTSKIMVSVWAFFAVIFLASYTANLAAFMIQEEFVDQVTGLSDKKFQRPHDYSPPFRFGTVPNGSTERNIRNNYPYMHQYMTKFNQRGVEDALVSLKTGKLDAFIYDAAVLNYKAGRDEGCKLVTIGSGYIFATTGYGIALQKGSPWKRQIDLALLQFVGDGEMEELETLWLTGICHNEKNEVMSSQLDIDNMAGVFYMLAAAMALSLITFIWEHLF

Entity 3 Entity 3 polymer

Description description	Glutamate receptor ionotropic, NMDA 2B
Molecular weight formula_weight	90610.5 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D

SIGIAVILVGTSDEVAIKDAHEKDDFHHLSVVPRVELVAMNETDPKSIITRICDLMSDRKIQGVVLADDTDQEAIAQILDFISAQTLTPILGIHGGSSMIMADKDESSMFFQFGPSIEQQASVMLNIMEEYDWYIFSIVTTYFPGYQDFVNKIRSTIENSFVGWELEEVLLLDMSLDDGDSKIQNQLKKLQSPIILLYCTKEEATYIFEVANSVGLTGYGYTWIVPSLVAGDTDTVPSEFPTGLISVSYDEWDYGLPARVRDGIAIITTAASDMLSEHSFIPEPKSSCYNTHEKRIYQSNMLNRYLINVTFEGRNLSFSEDGYQMHPKLVIILLNKERKWERVGKWKDKSLQMKYYVWPRMCPETEEQEDDHLSIVTLEEAPFVIVESVDPLSGTCMRNTVPCQKRIISENKTDEEPGYIKKCCKGFCIDILKKISKSVKFTYDLYLVTNGKHGKKINGTWNGMIGEVVMKRAYMAVGSLTINEERSEVVDFSVPFIETGISVMVSRSNGTVSPSAFLEPFSADVWVMMFVMLLIVSAVAVFVFEYFSPVGYNRCLADGREPGGPSFTIGKAIWLLWGLVFNNSVPVQNPKGTTSKIMVSVWAFFAVIFLASYTANLAAFMIQEEYVDQVSGLSDKKFQRPNDFSPPFRFGTVPNGSTERNIRNNYAEMHAYMGKFNQRGVDDALLSLKTGKLDAFIYDAAVLNYMAGRDEGCKLVTIGSGKVFASTGYGIAIQKDSGWKRQVDLAILQLFGDGEMEELEALWLTGICHNEKNEVMSSQLDIDNMAGVFYMLGAAMALSLITFICEHL

Entity 4 Entity 4 non-polymer

Description description	2-acetamido-2-deoxy-beta-D-glucopyranose
Molecular weight formula_weight	221.2 kDa
Source method src_method	syn
Copy count entity_count	19

Entity 5 Entity 5 non-polymer

Description description	GLYCINE
Molecular weight formula_weight	75.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 6 Entity 6 non-polymer

Description description	GLUTAMIC ACID
Molecular weight formula_weight	147.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 7 Entity 7 non-polymer

Description description	(2~{S})-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one
Molecular weight formula_weight	237.7 kDa
Source method src_method	syn
Copy count entity_count	1

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8. Citations (1)

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	—

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	2.980 Å
Low-resolution limit resolution_low	— Å
R factor r_factor	—
R_work r_work	—
R_free r_free	—

Resolution resolution	2.98 Å
Resolution测定方法 resolution_method	—
颗粒数 num_particles	343745

fit	/app/data/saxs_computation/un/9unr/9unr.fit
pddf	/app/data/pr_computation/un/9unr/9unr.pr.out
profile	/app/data/saxs_computation/un/9unr/9unr.dat

native NMDA receptor-GluN1/N2A/N2B-S1 in the closed state

1. Protein Identity and Related Structures Protein Identity & Related Structures

Glutamate receptor ionotropic, NMDA 1

State in the Current Structure

Other States of the Same Protein in the Database

Glutamate receptor ionotropic, NMDA 2A

State in the Current Structure

Other States of the Same Protein in the Database

Glutamate receptor ionotropic, NMDA 2B

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

冷冻电镜 EM 3D

6. Entities and Polymers Entities & Polymers (7)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)