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        <current_status>
            <date>2024-03-06</date>
            <code>REL</code>
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        </current_status>
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            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
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        <key_dates>
            <deposition>2016-04-08</deposition>
            <header_release>2016-04-20</header_release>
            <map_release>2016-04-20</map_release>
            <update>2024-03-06</update>
        </key_dates>
        <title>Cryo-EM structure of GluN1/GluN2B NMDA receptor in the glutamate/glycine-bound conformation</title>
        <authors_list>
            <author>Zhu S</author>
            <author>Stein AR</author>
        </authors_list>
        <keywords>ligand-gated ion channel, synaptic transmission, SIGNALING PROTEIN</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Zhu S</author>
                    <author order="2">Stein RA</author>
                    <author order="3">Yoshioka C</author>
                    <author order="4">Lee CH</author>
                    <author order="5">Goehring A</author>
                    <author order="6">Mchaourab HS</author>
                    <author order="7">Gouaux E</author>
                    <title>Mechanism of NMDA Receptor Inhibition and Activation.</title>
                    <journal_abbreviation>Cell</journal_abbreviation>
                    <volume>165</volume>
                    <first_page>704</first_page>
                    <last_page>714</last_page>
                    <year>2016</year>
                    <external_references type="PUBMED">27062927</external_references>
                    <external_references type="DOI">doi:10.1016/j.cell.2016.03.028</external_references>
                    <external_references type="ISSN">1097-4172</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
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    <sample>
        <name>GluN1-GluN2B NMDA receptor</name>
        <supramolecule_list>
            <organelle_or_cellular_component_supramolecule supramolecule_id="1">
                <name>GluN1-GluN2B NMDA receptor</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
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                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="8355">Xenopus laevis</organism>
                </natural_source>
            </organelle_or_cellular_component_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>N-methyl-D-aspartate receptor subunit NR1-8a</name>
                <natural_source database="NCBI">
                    <organism ncbi="8355">Xenopus laevis</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.092651234</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="9606">Homo sapiens</recombinant_organism>
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                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>DPKIVNIGAVLSTKKHEQIFREAVNQANFFHFTRKIQLNATSVTHRPNAIQMALSVCEDLISSQVYAILVSHPPAPTDHL
TPTPISYTAGFYRIPVIGLTTRMSIYSDKSIHLSFLRTVPPYSHQALVWFEMMRLFNWNHVILIVSDDHEGRAAQKKLET
LLEEKESKADKVLQFEPGTKNLTALLLEAKELEARVIILSASEDDATAVYKSAAMLDMTGAGYVWLVGEREISGSALRYA
PDGIIGLQLINGKNESAHISDAVAVVAQAIHELFEMEQITDPPRGCVGNTNIWKTGPLFKRVLMSSKYPDGVTGRIEFNE
DGDRKFAQYSIMNLQNRKLVQVGIFDGSYIIQNDRKIIWPGGETERPQGYQMSTRLKIVTIHQEPFVYVRPTTSDGTCRE
EYTINGDPIKKVICNGPDETIPGRPTVPQCCYGFCVDLLIKLAREMDFTYEVHLVADGKFGTQERVNNSNAAAWNGMMGE
LLSGQADMIVAPLTINNERAQYIEFSKPFKYQGLTILVKKEIPRSTLDSFMQPFQSTLWLLVGLSVHVVAVMLYLLDRFS
PFGRFEDALTLSSAMWFSWRVLLNSGLGEGAPRSFSARILGMVWAGFAMIIVASYTANLAAFLVLRRPEERITGINDPRL
RNPSDKFIYATVKQSSVDIYFRRQVELSTMYRHMEKHNYESAAEAIQAVRDNKLHAFIWDSAVLEFEASQKCDLVTTGEL
FFRSGFGIGMRKDSPWKQEVSLNILKSHENGFMEELDKTWVRYQECDSRSNAPATLTFENMAGVFMLVAGGIVAGIFLIF
IEIAYKSRAEAKRMKGLEVLFQ</string>
                    <external_references type="UNIPROTKB">C0KD18</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Ionotropic glutamate receptor subunit NR2B</name>
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                    <organism ncbi="8355">Xenopus laevis</organism>
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                <molecular_weight>
                    <theoretical units="MDa">0.093234742</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="9606">Homo sapiens</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
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CDLMSDKKVQGVVFGDDTDQEAIAQILDFISVQTLTPILGIHGGSSMIMADKEEASMFFQFGPSIEQQASVMLNIMEEYD
WYIFSIVTTYFPGYQDFENKVRSTIENSFVGWELEEVIHLDMSLDDIDSKIQNQLKKLQSPVILLYCTKEEATYIFEVAH
SVGLTGYGFTWIVPSLVAGDTDTVPDEFPTGLISVSYDEWDYDLPARVRDGIAIITTAASTMLSEHNSIPQSKSSCNNIQ
ESRVYEAHMLKRYLINVTFEGRDLSFSEDGYQMHPKLVIILLNQERKWERVGKYKDRSLKMWPVFDLYPNSEEHKDEHLS
IVTLEEAPFVIVEDVDPLSGTCMRNTVPCRKQIRPENRTEEGGNYIKRCCKGFCIDILKKIAKTVKFTYDLYLVTNGKHG
KKINGVWNGMIGEVVTKRAYMAVGSLTINEERSEVVDFSVPFIETGISVMVSRSNGTVSPSAFLEPFSADVWVMMFVMLL
IVSAVAVFVFEYFSPVGYNGPSFTIGKAIWLLWGLVFNNSLPVQNPKGTTSKIMVSVWAFFAVIFLASYTANLAAFMIQR
RYVDQVSGLSDKKFQRPNDFSPAFRFGTVPNGSTERNIRNNYLEMHSYMVKFNQRSVQDALLSLKSGKLDAFIYDAAVLN
YMAGRDEGCKLVTIGSGKVFATTGYGIAIQKDSGWKRQVDLAILQLFGDGEMEELEALWLTGICHNEKNEVMSSQLDIDN
MAGVFYMLAAAMALSLITFIMEHLF</string>
                    <external_references type="UNIPROTKB">A7XY94</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="3">
                <name>GLYCINE</name>
                <molecular_weight>
                    <theoretical units="MDa">7.506699999999999e-05</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <formula>GLY</formula>
            </ligand>
            <ligand macromolecule_id="4">
                <name>GLUTAMIC ACID</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000147129</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <formula>GLU</formula>
            </ligand>
        </macromolecule_list>
    </sample>
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                        <ph>6.5</ph>
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                        <cryogen_name>ETHANE</cryogen_name>
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                    <microscope>FEI TITAN KRIOS</microscope>
                    <illumination_mode>OTHER</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">300</acceleration_voltage>
                    <nominal_cs units="mm">2.0</nominal_cs>
                    <nominal_defocus_min units="µm">2.5</nominal_defocus_min>
                    <nominal_defocus_max units="µm">4.0</nominal_defocus_max>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
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                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K2 SUMMIT (4k x 4k)</film_or_detector_model>
                            <detector_mode>COUNTING</detector_mode>
                            <digitization_details/>
                            <average_exposure_time units="s">8.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">8.7</average_electron_dose_per_image>
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                        <pdb_id>4TLM</pdb_id>
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