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    <admin>
        <current_status>
            <date>2018-12-19</date>
            <code>REL</code>
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        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2018-11-14</deposition>
            <header_release>2018-12-05</header_release>
            <map_release>2018-12-05</map_release>
            <update>2018-12-19</update>
        </key_dates>
        <title>Representative tomogram of immature MLV particles</title>
        <authors_list>
            <author>Qu K</author>
            <author>Glass B</author>
            <author>Dolezal M</author>
            <author>Schur FKM</author>
            <author>Rein A</author>
            <author>Rumlova M</author>
            <author>Ruml T</author>
            <author>Kraeusslich HG</author>
            <author>Briggs JAG</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Qu K</author>
                    <author order="2">Glass B</author>
                    <author order="3">Dolezal M</author>
                    <author order="4">Schur FKM</author>
                    <author order="5">Murciano B</author>
                    <author order="6">Rein A</author>
                    <author order="7">Rumlova M</author>
                    <author order="8">Ruml T</author>
                    <author order="9">Krausslich HG</author>
                    <author order="10">Briggs JAG</author>
                    <title>Structure and architecture of immature and mature murine leukemia virus capsids.</title>
                    <journal_abbreviation>Proc. Natl. Acad. Sci. U.S.A.</journal_abbreviation>
                    <country>US</country>
                    <volume>115</volume>
                    <first_page>E11751</first_page>
                    <last_page>E11760</last_page>
                    <year>2018</year>
                    <external_references type="PUBMED">30478053</external_references>
                    <external_references type="DOI">doi:10.1073/pnas.1811580115</external_references>
                    <external_references type="ISSN">1091-6490</external_references>
                    <external_references type="CSD">0040</external_references>
                    <external_references type="ASTM">PNASA6</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-0291</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>Immature MLV capsid hexamer structure in intact virus particles</details>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-4422</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
                </relationship>
            </emdb_reference>
        </emdb_list>
    </crossreferences>
    <sample>
        <name>Murine leukemia virus</name>
        <supramolecule_list>
            <virus_supramolecule supramolecule_id="1">
                <name>Murine leukemia virus</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <sci_species_name ncbi="11786">Murine leukemia virus</sci_species_name>
                <host_system database="NCBI">
                    <recombinant_organism ncbi="9606">Homo sapiens</recombinant_organism>
                    <recombinant_cell>HEK 293T</recombinant_cell>
                    <recombinant_plasmid>M2204</recombinant_plasmid>
                </host_system>
                <virus_type>VIRION</virus_type>
                <virus_isolate>STRAIN</virus_isolate>
                <virus_enveloped>true</virus_enveloped>
                <virus_empty>false</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>6.</ph>
                    </buffer>
                    <grid>
                        <model>C-flat-2/1</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>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">95</chamber_humidity>
                        <chamber_temperature units="K">288</chamber_temperature>
                        <instrument>FEI VITROBOT MARK II</instrument>
                        <details />
                    </vitrification>
                    <details>Purified virus solution was inactivated and diluted 1:1 with PBS containing 10 nm colloidal gold.</details>
                    <fiducial_markers_list>
                        <fiducial_marker>
                            <manufacturer>UMC Utrecht</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>
                    <c2_aperture_diameter units="&#181;m">50.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="&#181;m">2.0</nominal_defocus_min>
                    <nominal_defocus_max units="&#181;m">4.5</nominal_defocus_max>
                    <nominal_magnification>105000.</nominal_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <alignment_procedure>
                        <zemlin_tableau />
                    </alignment_procedure>
                    <specialist_optics>
                        <energy_filter>
                            <name>GIF Quantum LS</name>
                            <slit_width units="eV">20</slit_width>
                        </energy_filter>
                    </specialist_optics>
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                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K2 QUANTUM (4k x 4k)</film_or_detector_model>
                            <detector_mode>SUPER-RESOLUTION</detector_mode>
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                                    <height units="pixel">3838</height>
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                                <sampling_interval units="&#181;m">5.0</sampling_interval>
                                <frames_per_image>1-6</frames_per_image>
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                            <number_grids_imaged>1</number_grids_imaged>
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                            <average_electron_dose_per_image units="e/&#8491;^2">2.5</average_electron_dose_per_image>
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                <image_recording_id>1</image_recording_id>
                <final_reconstruction>
                    <software_list>
                        <software>
                            <name>eTomo</name>
                        </software>
                    </software_list>
                    <number_images_used>40</number_images_used>
                </final_reconstruction>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>MATLAB</name>
                            <processing_details>CTF determination</processing_details>
                        </software>
                        <software>
                            <name>IMOD</name>
                            <processing_details>Phase flipping only</processing_details>
                        </software>
                    </software_list>
                </ctf_correction>
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