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    <admin>
        <current_status>
            <date>2019-11-06</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2017-07-21</deposition>
            <header_release>2017-08-02</header_release>
            <map_release>2017-09-13</map_release>
            <update>2019-11-06</update>
        </key_dates>
        <title>Structure of the truncated African cichlid nackednavirus icosahedral capsid</title>
        <authors_list>
            <author>Mattei S</author>
            <author>Briggs JAG</author>
            <author>Seitz S</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Lauber C</author>
                    <author order="2">Seitz S</author>
                    <author order="3">Mattei S</author>
                    <author order="4">Suh A</author>
                    <author order="5">Beck J</author>
                    <author order="6">Herstein J</author>
                    <author order="7">Borold J</author>
                    <author order="8">Salzburger W</author>
                    <author order="9">Kaderali L</author>
                    <author order="10">Briggs JAG</author>
                    <author order="11">Bartenschlager R</author>
                    <title>Deciphering the Origin and Evolution of Hepatitis B Viruses by Means of a Family of Non-enveloped Fish Viruses.</title>
                    <journal_abbreviation>Cell Host Microbe</journal_abbreviation>
                    <country>US</country>
                    <volume>22</volume>
                    <first_page>387</first_page>
                    <last_page>399.e6</last_page>
                    <year>2017</year>
                    <external_references type="PUBMED">28867387</external_references>
                    <external_references type="DOI">doi:10.1016/j.chom.2017.07.019</external_references>
                    <external_references type="ISSN">1934-6069</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-3823</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
                </relationship>
            </emdb_reference>
        </emdb_list>
    </crossreferences>
    <sample>
        <name>Retro-transcribing viruses</name>
        <supramolecule_list>
            <virus_supramolecule supramolecule_id="1">
                <name>Retro-transcribing viruses</name>
                <parent>0</parent>
                <details>truncated capsid variant (aa 1-146) lacking the C-terminal nucleic acid binding domain.</details>
                <sci_species_name ncbi="35268">Retro-transcribing viruses</sci_species_name>
                <natural_host database="NCBI">
                    <organism ncbi="27755">Ophthalmotilapia ventralis</organism>
                </natural_host>
                <host_system database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </host_system>
                <virus_shell shell_id="1">
                    <name>capsid</name>
                    <diameter units="Å">320.0</diameter>
                    <triangulation>3</triangulation>
                </virus_shell>
                <virus_type>VIRION</virus_type>
                <virus_isolate>STRAIN</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>singleParticle</method>
            <aggregation_state>particle</aggregation_state>
            <specimen_preparation_list>
                <single_particle_preparation preparation_id="1">
                    <buffer>
                        <ph>7.2</ph>
                    </buffer>
                    <grid>
                        <model>Protochips C-Flat</model>
                        <material>COPPER</material>
                        <mesh>200</mesh>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <atmosphere>AIR</atmosphere>
                        </pretreatment>
                        <details>20 mA</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">288</chamber_temperature>
                        <instrument>FEI VITROBOT MARK II</instrument>
                        <details></details>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>FEI TECNAI F30</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">2.26</nominal_cs>
                    <nominal_defocus_min units="µm">1.0</nominal_defocus_min>
                    <nominal_defocus_max units="µm">4.0</nominal_defocus_max>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <alignment_procedure>
                        <coma_free/>
                    </alignment_procedure>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>FEI FALCON II (4k x 4k)</film_or_detector_model>
                            <detector_mode>INTEGRATING</detector_mode>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">4096</width>
                                    <height units="pixel">4096</height>
                                </dimensions>
                                <sampling_interval units="µm">14.0</sampling_interval>
                                <frames_per_image>1-7</frames_per_image>
                            </digitization_details>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>1018</number_real_images>
                            <average_electron_dose_per_image units="e/Å^2">35.0</average_electron_dose_per_image>
                        </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>781</number_selected>
                    <details>manual picking</details>
                </particle_selection>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>CTFFIND</name>
                            <version>4</version>
                        </software>
                    </software_list>
                </ctf_correction>
                <startup_model type_of_model="OTHER">
                    <details>The structure of full-length ACNDV low-pass filtered at 100 angstrom was used as initial reference</details>
                </startup_model>
                <final_reconstruction>
                    <number_classes_used>1</number_classes_used>
                    <applied_symmetry>
                        <point_group>I</point_group>
                    </applied_symmetry>
                    <algorithm>BACK PROJECTION</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">9.0</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>1.3</version>
                        </software>
                    </software_list>
                    <number_images_used>360</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing/>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>1.3</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing/>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>1.3</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <number_classes>3</number_classes>
                    <average_number_members_per_class>260.0</average_number_members_per_class>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>1.2</version>
                        </software>
                    </software_list>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
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        <file>emd_3823.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
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        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>512</col>
            <row>512</row>
            <sec>512</sec>
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            <y>512</y>
            <z>512</z>
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            <a units="Å">604.16</a>
            <b units="Å">604.16</b>
            <c units="Å">604.16</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
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            <average>0.0007083466</average>
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            <y units="Å">1.18</y>
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            <contour primary="true">
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                <source>AUTHOR</source>
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        <label>::::EMDATABANK.org::::EMD-3823::::</label>
        <annotation_details>Structure of the truncated African cichlid nackednavirus capsid</annotation_details>
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