9MUL: GluN1/GluN2A ligand-binding domain

Crystal structure of GluN1/GluN2A ligand-binding domain in complex with Compound 1, Glycine and Glutamate. Determined by X-ray diffraction at 2.4 Å resolution. Released 5 Mar 2025.

Method
X-ray diffraction
Resolution
2.4 Å
Organism
Homo sapiens
Chains
2
Atoms
4,582
Mol. weight
69.37 kDa
Ligands
A1BRA, GLU, GLY
Released
5 Mar 2025

Explore 9MUL in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

9MUL contains 31 α-helices and 39 β-strands across 2 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 16 helices, 21 β-strands

ElementResiduesLengthSheet
β-strand398-40251
β-strand40512
β-strand40912
β-strand410-41341
β-strand42413
α-helix4291
β-strand43013
α-helix431-4322
β-strand434-43961
β-strand450-45671
α-helix458-47013
β-strand474-47851
β-strand48714
β-strand49814
α-helix500-5078
β-strand512-51321
β-strand51815
α-helix521-5244
β-strand528-52921
α-helix5301
α-helix5321
β-strand534-543105
α-helix670-6734
β-strand681-68225
β-strand68416
α-helix688-6958
α-helix697-6993
α-helix700-7067
β-strand71116
α-helix714-7229
β-strand728-73255
α-helix733-74210
β-strand746-758135
β-strand761-76221
α-helix769-78113
α-helix784-7885
α-helix789-7935
Chain B: 15 helices, 18 β-strands
ElementResiduesLengthSheet
β-strand405-41067
β-strand41318
β-strand41718
β-strand418-42037
β-strand434-44187
β-strand449-45797
α-helix459-47012
β-strand474-47967
β-strand488-48929
β-strand492-49329
α-helix495-5017
β-strand507-50827
β-strand513110
α-helix516-5194
β-strand523-52427
β-strand529-5381010
α-helix668-6714
α-helix673-6753
α-helix679-6813
β-strand682-683210
α-helix689-6979
α-helix699-7057
α-helix706-7083
α-helix713-7219
β-strand727-731510
α-helix732-7409
α-helix743-7453
β-strand747-749310
α-helix750-7534
β-strand756-761610
β-strand764-76527
α-helix772-78413
α-helix787-7959

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Glutamate receptor ionotropic, NMDA 1Aprotein306Homo sapiensQ05586 (AlphaFold model)
Glutamate receptor ionotropic, NMDA 2ABprotein297Homo sapiensQ12879 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>9MUL_1 Glutamate receptor ionotropic, NMDA 1 (chains A)
MHHHHHHENLYFQGSMSTRLKIVTIHQEPFVYVKPTLSDGTCKEEFTVNGDPVKKVICTG
PNDTSPGSPRHTVPQCCYGFCIDLLIKLARTMNFTYEVHLVADGKFGTQERVNNSNKKEW
NGMMGELLSGQADMIVAPLTINNERAQYIEFSKPFKYQGLTILVKKGTRITGINDPRLRN
PSDKFIYATVKQSSVDIYFRRQVELSTMYRHMEKHNYESAAEAIQAVRDNKLHAFIWDSA
VLEFEASQKCDLVTTGELFFRSGFGIGMRKDSPWKQNVSLSILKSHENGFMEDLDKTWVR
YQECDS
Sequence of entity 2 (B), FASTA
>9MUL_2 Glutamate receptor ionotropic, NMDA 2A (chains B)
MHHHHHHENLYFQGPDDNHLSIVTLEEAPFVIVEDIDPLTETCVRNTVPCRKFVKINNST
NEGMNVKKCCKGFCIDILKKLSRTVKFTYDLYLVTNGKHGKKVNNVWNGMIGEVVYQRAV
MAVGSLTINEERSEVVDFSVPFVETGISVMVSRGTQVTGLSDKKFQRPHDYSPPFRFGTV
PNGSTERNIRNNYPYMHQYMTKFNQKGVEDALVSLKTGKLDAFIYDAAVLNYKAGRDEGC
KLVTIGSGYIFATTGYGIALQKGSPWKRQIDLALLQFVGDGEMEELETLWLTGICHN

Ligands and cofactors

IDNameFormulaCopies
A1BRA5-[(3-chlorobenzene-1-sulfonyl)methoxy]-6-methyl-N-[(pyridin-3-yl)methyl]pyrazi…C19 H17 Cl N4 O4 S1
GLUGlutamic acidC5 H9 N O41
GLYGlycineC2 H5 N O21

Primary citation

Design, Synthesis, and Characterization of GluN2A Negative Allosteric Modulators Suitable for In Vivo Exploration. Bischoff, F.P., Van Brandt, S., Viellevoye, M. et al. J Med Chem (2025) 68:4672-4693. DOI 10.1021/acs.jmedchem.4c02751 · PubMed

Other PDB entries of the same protein (UniProt Q05586 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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