<?xml version="1.0" encoding="UTF-8"?>
<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://github.com/emdb-empiar/emdb-schemas/blob/master/v3/v3_0_1_5/emdb.xsd" emdb_id="EMD-3876" version="3.0.1.6">
    <admin>
        <current_status>
            <date>2019-12-04</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2017-09-13</deposition>
            <header_release>2017-11-22</header_release>
            <map_release>2017-11-22</map_release>
            <update>2019-12-04</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>European Research Council</funding_body>
                <code>ERC-CoG-648432 MEMBRANEFUSION</code>
                <country>Germany</country>
            </grant_reference>
            <grant_reference>
                <funding_body>German Research Foundation</funding_body>
                <code>Sonderforschungsbereich 1021</code>
                <country>Germany</country>
            </grant_reference>
            <grant_reference>
                <funding_body>European Molecular Biology Organization</funding_body>
                <code>ALTF 748-2014</code>
                <country>Germany</country>
            </grant_reference>
        </grant_support>
        <title>Cryo-electron tomogram of Marburg virus</title>
        <authors_list>
            <author>Wan W</author>
            <author>Kolesnikova L</author>
            <author>Clarke M</author>
            <author>Koehler A</author>
            <author>Noda T</author>
            <author>Becker S</author>
            <author>Briggs JAG</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Wan W</author>
                    <author order="2">Kolesnikova L</author>
                    <author order="3">Clarke M</author>
                    <author order="4">Koehler A</author>
                    <author order="5">Noda T</author>
                    <author order="6">Becker S</author>
                    <author order="7">Briggs JAG</author>
                    <title>Structure and assembly of the Ebola virus nucleocapsid.</title>
                    <journal_abbreviation>Nature</journal_abbreviation>
                    <country>UK</country>
                    <volume>551</volume>
                    <first_page>394</first_page>
                    <last_page>397</last_page>
                    <year>2017</year>
                    <external_references type="PUBMED">29144446</external_references>
                    <external_references type="DOI">doi:10.1038/nature24490</external_references>
                    <external_references type="ISSN">1476-4687</external_references>
                    <external_references type="CSD">0006</external_references>
                    <external_references type="ASTM">NATUAS</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-3875</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>The structure of Marburg virus nucleocapsid from virions</details>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-3876</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
                </relationship>
                <details>Model of the Ebola virus nucleocapsid subunit from recombinant virus-like particles</details>
            </emdb_reference>
        </emdb_list>
    </crossreferences>
    <sample>
        <name>Lake Victoria marburgvirus - Popp</name>
        <supramolecule_list>
            <virus_supramolecule supramolecule_id="1">
                <name>Lake Victoria marburgvirus - Popp</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>3</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>Virus was isolated from infected Huh-7 cells. Purified viruses were fixed with paraformaldehyde.</details>
                <sci_species_name ncbi="33728">Lake Victoria marburgvirus - Popp</sci_species_name>
                <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>helicalArray</aggregation_state>
            <specimen_preparation_list>
                <tomography_preparation preparation_id="1">
                    <buffer>
                        <ph>7.4</ph>
                        <details>Virus was purified into Dulbecco's modified Eagle's medium (DMEM) with 4% paraformaldehyde</details>
                    </buffer>
                    <grid>
                        <model>C-flat 2/1 3C</model>
                        <material>COPPER</material>
                        <mesh>300</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY</film_topology>
                            <film_thickness units="nm">20.0</film_thickness>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <atmosphere>AIR</atmosphere>
                            <pressure units="kPa">0.039</pressure>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">95</chamber_humidity>
                        <instrument>FEI VITROBOT MARK II</instrument>
                        <details></details>
                    </vitrification>
                    <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="µm">50.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">2.0</nominal_defocus_min>
                    <nominal_defocus_max units="µm">4.5</nominal_defocus_max>
                    <nominal_magnification>81000.0</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>
                            <lower_energy_threshold units="eV">-10</lower_energy_threshold>
                            <upper_energy_threshold units="eV">10</upper_energy_threshold>
                        </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>
                            <detector_mode>SUPER-RESOLUTION</detector_mode>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">3708</width>
                                    <height units="pixel">3708</height>
                                </dimensions>
                                <frames_per_image>1-5</frames_per_image>
                            </digitization_details>
                            <average_exposure_time units="s">1.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">2.9</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>Frames were aligned using K2Align software, based off the MotionCorr algorithm. Tomograms were reconstructed with IMOD, using stripwise CTF-correction and weighted back projection.</details>
                <final_reconstruction>
                    <algorithm>BACK PROJECTION</algorithm>
                    <software_list>
                        <software>
                            <name>IMOD</name>
                        </software>
                    </software_list>
                    <number_images_used>41</number_images_used>
                </final_reconstruction>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>CTFFIND</name>
                            <version>4</version>
                            <processing_details>defocus determination</processing_details>
                        </software>
                        <software>
                            <name>CTFPHASEFLIP</name>
                            <processing_details>CTF-correction</processing_details>
                        </software>
                    </software_list>
                    <details>CTF amplitude correction was performed during the wedge-weighted subtomogram averaging step.</details>
                </ctf_correction>
            </tomography_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="429665">
        <file>emd_3876.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS SIGNED INTEGER (2 BYTES)</data_type>
        <dimensions>
            <col>927</col>
            <row>927</row>
            <sec>250</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>70</sec>
        </origin>
        <spacing>
            <x>927</x>
            <y>927</y>
            <z>250</z>
        </spacing>
        <cell>
            <a units="Å">6600.2397</a>
            <b units="Å">6600.2397</b>
            <c units="Å">1780.0</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>-33</minimum>
            <maximum>33</maximum>
            <average>1.9209514</average>
            <std>2.2230742</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">7.12</x>
            <y units="Å">7.12</y>
            <z units="Å">7.12</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-3876::::</label>
        <annotation_details>A 4x binned representative tomogram of intact Marburg virus virions</annotation_details>
    </map>
</emd>
