<?xml version="1.0" encoding="UTF-8"?>
<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://ftp.ebi.ac.uk/pub/databases/em_ebi/emdb_related/emdb-schemas/emdb_schemas/v3/v3_0_11_0/emdb.xsd" version="3.0.11.0" emdb_id="EMD-53528">
    <admin>
        <current_status>
            <date>2025-10-08</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <revision_history>
            <revision version="1.0" date="2025-09-24">
                <change_list>
                    <metadata>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </metadata>
                    <image>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </image>
                    <primary_map>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </primary_map>
                </change_list>
            </revision>
        </revision_history>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2025-04-30</deposition>
            <header_release>2025-09-24</header_release>
            <map_release>2025-09-24</map_release>
            <update>2025-10-08</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>European Research Council (ERC)</funding_body>
                <code>ERC-CoG-648432 MEMBRANEFUSION</code>
                <country>European Union</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Medical Research Council (MRC, United Kingdom)</funding_body>
                <code>MC_UP_1201/16</code>
                <country>United Kingdom</country>
            </grant_reference>
            <grant_reference>
                <funding_body>UK Research and Innovation (UKRI)</funding_body>
                <code>MR/V022644/1</code>
                <country>United Kingdom</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Biotechnology and Biological Sciences Research Council (BBSRC)</funding_body>
                <code>BB/M011151/1</code>
                <country>United Kingdom</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Wellcome Trust</funding_body>
                <code>SBF005/1046</code>
                <country>United Kingdom</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Wellcome Trust</funding_body>
                <code>108466/Z/15/Z</code>
                <country>United Kingdom</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Wellcome Trust</funding_body>
                <code>208395/Z/17/Z</code>
                <country>United Kingdom</country>
            </grant_reference>
        </grant_support>
        <title>Tomogram of a PSD95-containing glutamatergic synapse from 'ultra fresh' prepared mouse.</title>
        <authors_list>
            <author ORCID="0000-0001-8560-7407">Peukes J</author>
            <author ORCID="0000-0001-9724-9547">Frank R</author>
            <author ORCID="0000-0003-3990-6910">Briggs JAG</author>
        </authors_list>
        <keywords>glutamate receptor, Synapse, Neurotransmission, Ion channel, SIGNALING PROTEIN</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0001-8560-7407" order="1">Peukes J</author>
                    <author ORCID="0000-0002-7171-0494" order="2">Lovatt C</author>
                    <author order="3">Leistner C</author>
                    <author ORCID="0000-0003-0237-3743" order="4">Boulanger J</author>
                    <author order="5">Morado DR</author>
                    <author order="6">Fuller MJG</author>
                    <author ORCID="0000-0002-2778-3936" order="7">Kukulski W</author>
                    <author order="8">Zhu F</author>
                    <author order="9">Komiyama NH</author>
                    <author ORCID="0000-0003-3990-6910" order="10">Briggs JAG</author>
                    <author ORCID="0000-0001-8732-8735" order="11">Grant SGN</author>
                    <author ORCID="0000-0001-9724-9547" order="12">Frank RAW</author>
                    <title>The molecular infrastructure of glutamatergic synapses in the mammalian forebrain.</title>
                    <journal_abbreviation>Elife</journal_abbreviation>
                    <country>US</country>
                    <volume>13</volume>
                    <year>2025</year>
                    <external_references type="PUBMED">40996785</external_references>
                    <external_references type="DOI">doi:10.7554/eLife.100335</external_references>
                    <external_references type="ISSN">2050-084X</external_references>
                </journal_citation>
            </primary_citation>
            <secondary_citation>
                <journal_citation published="true">
                    <author order="13">Peukes J</author>
                    <author order="14">Lovatt C</author>
                    <author order="15">Leistner C</author>
                    <author order="16">Boulanger J</author>
                    <author order="17">Morado DR</author>
                    <author order="18">Fuller MJG</author>
                    <author order="19">Kukulski W</author>
                    <author order="20">Zhu F</author>
                    <author order="21">Komiyama NH</author>
                    <author order="22">Briggs JAG</author>
                    <author order="23">Grant SGN</author>
                    <author order="24">Frank RAW</author>
                    <title>The molecular infrastructure of glutamatergic synapses in the mammalian forebrain</title>
                    <journal_abbreviation>eLife</journal_abbreviation>
                    <country>US</country>
                    <year>2024</year>
                    <external_references type="DOI">doi:10.7554/eLife.100335.1</external_references>
                    <external_references type="ISSN">2050-084X</external_references>
                </journal_citation>
            </secondary_citation>
        </citation_list>
        <other_db_list>
            <db_reference>
                <db_name>EMDB</db_name>
                <accession_id>EMD-53528</accession_id>
                <content_type>associated EM volume</content_type>
            </db_reference>
        </other_db_list>
    </crossreferences>
    <sample>
        <name>Mouse forebrain (cortex and hippocampus) tissue</name>
        <supramolecule_list>
            <tissue_supramolecule supramolecule_id="1">
                <name>Mouse forebrain (cortex and hippocampus) tissue</name>
                <parent>0</parent>
                <natural_source database="NCBI">
                    <organism ncbi="10090">Mus musculus</organism>
                    <strain>PSD95-GFP knockin mouse</strain>
                    <organ>Brain</organ>
                    <tissue>Brain</tissue>
                </natural_source>
            </tissue_supramolecule>
        </supramolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>tomography</method>
            <aggregation_state>tissue</aggregation_state>
            <specimen_preparation_list>
                <tomography_preparation preparation_id="1">
                    <buffer>
                        <ph>7.4</ph>
                        <details>125 mM NaCl, 25 mM KCl, 25 mM NHCO3, 25 mM glucose, 2.5 mM KCl, 2 mM CaCl2, 1.25 mM NaH2PO4, 1 mM MgCl2; Osmolality: 310 mOsM/L</details>
                    </buffer>
                    <grid>
                        <model>Quantifoil</model>
                        <material>COPPER</material>
                        <mesh>300</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY</film_topology>
                        </support_film>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_temperature units="K">277.15</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                    </vitrification>
                    <details>Mouse forebrain homogeneized in artificial cerebrospinal fluid (ACSF) to generate suspension of Psd95-GFP containing synaptoneurosomes. Samples was applied to cryoEM grid and plunge frozen in liquid ethane. CryET dataset collection was guided by Psd95-GFP cryoCLEM.</details>
                    <fiducial_markers_list>
                        <fiducial_marker>
                            <manufacturer>Aurion</manufacturer>
                            <diameter units="nanometer">10</diameter>
                        </fiducial_marker>
                    </fiducial_markers_list>
                    <sectioning>
                        <other_sectioning>NO SECTIONING</other_sectioning>
                    </sectioning>
                </tomography_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <tomography_microscopy microscopy_id="1">
                    <microscope>TFS KRIOS</microscope>
                    <illumination_mode>FLOOD BEAM</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">300</acceleration_voltage>
                    <nominal_defocus_min units="µm">2.0</nominal_defocus_min>
                    <nominal_defocus_max units="µm">6.25</nominal_defocus_max>
                    <nominal_magnification>42000.0</nominal_magnification>
                    <specialist_optics>
                        <phase_plate>VOLTA PHASE PLATE</phase_plate>
                        <energy_filter>
                            <slit_width units="eV">20</slit_width>
                        </energy_filter>
                    </specialist_optics>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K2 QUANTUM (4k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/Å^2">1.0</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
                </tomography_microscopy>
            </microscopy_list>
            <tomography_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <final_reconstruction>
                    <number_images_used>61</number_images_used>
                </final_reconstruction>
                <ctf_correction>
                    <type>NONE</type>
                </ctf_correction>
            </tomography_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="1122509">
        <file>emd_53528.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>960</col>
            <row>928</row>
            <sec>315</sec>
        </dimensions>
        <origin>
            <col>16</col>
            <row>-16</row>
            <sec>158</sec>
        </origin>
        <spacing>
            <x>960</x>
            <y>928</y>
            <z>315</z>
        </spacing>
        <cell>
            <a units="Å">11462.399</a>
            <b units="Å">11080.319</b>
            <c units="Å">3761.0999</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
        </cell>
        <axis_order>
            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
        </axis_order>
        <statistics>
            <minimum>-54136.739999999997963</minimum>
            <maximum>20590.895000000000437</maximum>
            <average>1062.081899999999905</average>
            <std>2431.993399999999838</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">11.94</x>
            <y units="Å">11.94</y>
            <z units="Å">11.94</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-53528::::</label>
        <annotation_details>Tomogram of a PSD95-containing glutamatergic synapse from ultra fresh prepared mouse brains.</annotation_details>
    </map>
</emd>
