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    <admin>
        <current_status>
            <date>2020-06-10</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2019-09-20</deposition>
            <header_release>2019-10-02</header_release>
            <map_release>2020-05-13</map_release>
            <update>2020-06-10</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of General Medical Sciences</funding_body>
                <code>U24GM116789-03</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>AAAS Marion Mason Milligan Award for Women in the Chemical Sciences</funding_body>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Human Genome Research Institute</funding_body>
                <code>GM110185</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>NVIDIA GPU grant program</funding_body>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Burroughs Wellcome Fund Investigators in the Pathogenicity of Disease</funding_body>
                <country>United States</country>
            </grant_reference>
        </grant_support>
        <title>Low pH and High Temperature-Treated Samba Virus</title>
        <authors_list>
            <author>Schrad JR</author>
            <author>Parent KN</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Schrad JR</author>
                    <author order="2">Abrahao JS</author>
                    <author order="3">Cortines JR</author>
                    <author order="4">Parent KN</author>
                    <title>Structural and Proteomic Characterization of the Initiation of Giant Virus Infection.</title>
                    <journal_abbreviation>Cell</journal_abbreviation>
                    <volume>181</volume>
                    <first_page>1046</first_page>
                    <last_page>1061.e6</last_page>
                    <year>2020</year>
                    <external_references type="PUBMED">32392465</external_references>
                    <external_references type="DOI">doi:10.1016/j.cell.2020.04.032</external_references>
                    <external_references type="ISSN">1097-4172</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
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            <emdb_reference>
                <emdb_id>EMD-20747</emdb_id>
                <relationship>
                    <other>other EM volume</other>
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            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-20745</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-20748</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-20746</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
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    <sample>
        <name>Samba virus</name>
        <supramolecule_list>
            <virus_supramolecule supramolecule_id="1">
                <name>Samba virus</name>
                <parent>0</parent>
                <details>Low pH and high temperature-treated Samba virus particle.</details>
                <sci_species_name ncbi="1461100">Samba virus</sci_species_name>
                <natural_host database="NCBI">
                    <organism ncbi="5755">Acanthamoeba castellanii</organism>
                    <strain>Neff</strain>
                </natural_host>
                <virus_type>VIRION</virus_type>
                <virus_isolate>SPECIES</virus_isolate>
                <virus_enveloped>false</virus_enveloped>
                <virus_empty>true</virus_empty>
            </virus_supramolecule>
        </supramolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>tomography</method>
            <aggregation_state>particle</aggregation_state>
            <specimen_preparation_list>
                <tomography_preparation preparation_id="1">
                    <buffer>
                        <ph>2</ph>
                        <component>
                            <concentration units="mM">20.0</concentration>
                            <formula>NaPO4</formula>
                            <name>sodium phosphate</name>
                        </component>
                    </buffer>
                    <grid>
                        <model>Quantifoil R2/2</model>
                        <material>COPPER</material>
                        <pretreatment>
                            <type>PLASMA CLEANING</type>
                            <atmosphere>AIR</atmosphere>
                        </pretreatment>
                        <details>Fischione model 1020</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <instrument>HOMEMADE PLUNGER</instrument>
                        <details></details>
                    </vitrification>
                    <details>Low pH and high temperature-treated Samba virus particle.

~1x10^9 particles per mL</details>
                    <fiducial_markers_list>
                        <fiducial_marker>
                            <manufacturer>Aldrich</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>FEI TITAN 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_cs units="mm">2.7</nominal_cs>
                    <nominal_magnification>33000.0</nominal_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <temperature>
                        <temperature_min units="K">70.0</temperature_min>
                        <temperature_max units="K">70.0</temperature_max>
                    </temperature>
                    <alignment_procedure>
                        <coma_free/>
                    </alignment_procedure>
                    <specialist_optics>
                        <energy_filter>
                            <name>GIF Bioquantum</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>GATAN K2 SUMMIT (4k x 4k)</film_or_detector_model>
                            <detector_mode>SUPER-RESOLUTION</detector_mode>
                            <average_exposure_time units="s">5.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">2.5</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>
                <details>MotionCor2 to align frames</details>
                <final_reconstruction>
                    <algorithm>SIMULTANEOUS ITERATIVE (SIRT)</algorithm>
                    <software_list>
                        <software>
                            <name>IMOD</name>
                            <version>4.7.5</version>
                        </software>
                    </software_list>
                    <number_images_used>51</number_images_used>
                </final_reconstruction>
            </tomography_processing>
        </structure_determination>
    </structure_determination_list>
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            <a units="Å">2973.5999</a>
            <b units="Å">3124.7998</b>
            <c units="Å">1726.2</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
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        <axis_order>
            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
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            <maximum>127</maximum>
            <average>6.4591455</average>
            <std>13.033827</std>
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            <x units="Å">4.2</x>
            <y units="Å">4.2</y>
            <z units="Å">4.2</z>
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            <contour primary="true">
                <source>AUTHOR</source>
            </contour>
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        <label>::::EMDATABANK.org::::EMD-20746::::</label>
        <annotation_details>Low pH and high temperature-treated Samba virus particle.</annotation_details>
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