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    <admin>
        <current_status>
            <date>2021-04-28</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2020-03-09</deposition>
            <header_release>2020-04-08</header_release>
            <map_release>2020-04-08</map_release>
            <update>2021-04-28</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Medical Research Council (MRC, United Kingdom)</funding_body>
                <code>MC_UU_12014/7</code>
                <country>United Kingdom</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Medical Research Council (MRC, United Kingdom)</funding_body>
                <code>MC_PC_17135</code>
                <country>United Kingdom</country>
            </grant_reference>
        </grant_support>
        <title>Lumazine Synthase</title>
        <authors_list>
            <author>Bhella D</author>
            <author>Streetley J</author>
            <author>Clarke M</author>
            <author>Cowton V</author>
            <author>Patel A</author>
            <author>Bammes B</author>
            <author>Hosogi N</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Bhella D</author>
                    <title>Cryo-electron microscopy: an introduction to the technique, and considerations when working to establish a national facility.</title>
                    <journal_abbreviation>Biophys Rev</journal_abbreviation>
                    <volume>11</volume>
                    <first_page>515</first_page>
                    <last_page>519</last_page>
                    <year>2019</year>
                    <external_references type="PUBMED">31359340</external_references>
                    <external_references type="DOI">doi:10.1007/s12551-019-00571-w</external_references>
                    <external_references type="ISSN">1867-2450</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-10736</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
                </relationship>
            </emdb_reference>
        </emdb_list>
    </crossreferences>
    <sample>
        <name>Icosahedral complex of Lumazine Synthase</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Icosahedral complex of Lumazine Synthase</name>
                <parent>0</parent>
                <natural_source database="NCBI">
                    <organism ncbi="63363">Aquifex aeolicus</organism>
                </natural_source>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
            </complex_supramolecule>
        </supramolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>singleParticle</method>
            <aggregation_state>particle</aggregation_state>
            <specimen_preparation_list>
                <single_particle_preparation preparation_id="1">
                    <concentration units="mg/mL">3</concentration>
                    <buffer>
                        <ph>7.2</ph>
                    </buffer>
                    <grid>
                        <model>C-flat-1.2/1.3 4C</model>
                        <material>COPPER</material>
                        <mesh>400</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY ARRAY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                    </vitrification>
                    <details>Purified by immobilised metal affinity chromatography.</details>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>JEOL CRYO ARM 300</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>
                    <c2_aperture_diameter units="µm">100.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_magnification>200000.0</nominal_magnification>
                    <specimen_holder_model>JEOL CRYOSPECPORTER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <specialist_optics>
                        <energy_filter>
                            <name>In-column Omega Filter</name>
                            <slit_width units="eV">20</slit_width>
                        </energy_filter>
                    </specialist_optics>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>DIRECT ELECTRON DE-64 (8k x 8k)</film_or_detector_model>
                            <detector_mode>COUNTING</detector_mode>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">4096</width>
                                    <height units="pixel">4096</height>
                                </dimensions>
                                <sampling_interval units="µm">13.0</sampling_interval>
                                <frames_per_image>1-41</frames_per_image>
                            </digitization_details>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>1199</number_real_images>
                            <average_exposure_time units="s">10.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">1.66</average_electron_dose_per_image>
                            <details>Images were acquired at 141 FPS with 2 x binning and electron counting. A total of 41 summed frames were written out.</details>
                        </image_recording>
                    </image_recording_list>
                </single_particle_microscopy>
            </microscopy_list>
            <singleparticle_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <particle_selection>
                    <number_selected>198385</number_selected>
                    <details>Automated particle picking in Relion</details>
                </particle_selection>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.1b</version>
                            <processing_details>with GCTF</processing_details>
                        </software>
                    </software_list>
                </ctf_correction>
                <startup_model type_of_model="OTHER">
                    <details>SGD</details>
                </startup_model>
                <final_reconstruction>
                    <applied_symmetry>
                        <point_group>I</point_group>
                    </applied_symmetry>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution res_type="BY AUTHOR" units="Å">2.0</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.1b</version>
                        </software>
                    </software_list>
                    <number_images_used>16258</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing />
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.1b</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing />
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.1b</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="256001">
        <file>emd_10736.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>400</col>
            <row>400</row>
            <sec>400</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>400</x>
            <y>400</y>
            <z>400</z>
        </spacing>
        <cell>
            <a units="Å">238.8</a>
            <b units="Å">238.8</b>
            <c units="Å">238.8</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>-0.05662378</minimum>
            <maximum>0.0998149</maximum>
            <average>-0.00012479199</average>
            <std>0.007047362</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">0.597</x>
            <y units="Å">0.597</y>
            <z units="Å">0.597</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.025</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-10736::::</label>
        <annotation_details>Reconstruction of Lumazine Synthase, sharpened and filtered at 2 angstroms</annotation_details>
    </map>
    <interpretation>
        <segmentation_list>
            <segmentation>
                <file>emd_10736_msk_1.map</file>
            </segmentation>
        </segmentation_list>
        <half_map_list>
            <half_map format="CCP4" size_kbytes="256001">
                <file>emd_10736_half_map_2.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>400</col>
                    <row>400</row>
                    <sec>400</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>400</x>
                    <y>400</y>
                    <z>400</z>
                </spacing>
                <cell>
                    <a units="Å">238.8</a>
                    <b units="Å">238.8</b>
                    <c units="Å">238.8</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>-0.017551756</minimum>
                    <maximum>0.03793932</maximum>
                    <average>-0.00012778175</average>
                    <std>0.0031533912</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.597</x>
                    <y units="Å">0.597</y>
                    <z units="Å">0.597</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-10736::::</label>
                <annotation_details>Half map 2</annotation_details>
            </half_map>
            <half_map format="CCP4" size_kbytes="256001">
                <file>emd_10736_half_map_1.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>400</col>
                    <row>400</row>
                    <sec>400</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>400</x>
                    <y>400</y>
                    <z>400</z>
                </spacing>
                <cell>
                    <a units="Å">238.8</a>
                    <b units="Å">238.8</b>
                    <c units="Å">238.8</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>-0.019451553</minimum>
                    <maximum>0.038764212</maximum>
                    <average>-0.00012175626</average>
                    <std>0.0032257873</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.597</x>
                    <y units="Å">0.597</y>
                    <z units="Å">0.597</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-10736::::</label>
                <annotation_details>Half map 1</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>