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    <admin>
        <current_status>
            <date>2020-01-01</date>
            <code>REL</code>
            <processing_site>PDBj</processing_site>
        </current_status>
        <sites>
            <deposition>PDBj</deposition>
            <last_processing>PDBj</last_processing>
        </sites>
        <key_dates>
            <deposition>2018-07-03</deposition>
            <header_release>2018-08-15</header_release>
            <map_release>2019-02-27</map_release>
            <update>2020-01-01</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Ministry of Science and Technology (China)</funding_body>
                <code>2016YFA0501100</code>
                <country>China</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Natural Science Foundation of China</funding_body>
                <code>31470721</code>
                <country>China</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Basic Research Program of China (973 Program)</funding_body>
                <code>2015CB910102</code>
                <country>China</country>
            </grant_reference>
        </grant_support>
        <title>The asymmetric cryo-EM reconstruction of filamentous bacteriophage IKe</title>
        <authors_list>
            <author>Xu JW</author>
            <author>Dayan N</author>
            <author>Goldbourt A</author>
            <author>Xiang Y</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Xu J</author>
                    <author order="2">Dayan N</author>
                    <author order="3">Goldbourt A</author>
                    <author order="4">Xiang Y</author>
                    <title>Cryo-electron microscopy structure of the filamentous bacteriophage IKe.</title>
                    <journal_abbreviation>Proc. Natl. Acad. Sci. U.S.A.</journal_abbreviation>
                    <country>US</country>
                    <volume>116</volume>
                    <first_page>5493</first_page>
                    <last_page>5498</last_page>
                    <year>2019</year>
                    <external_references type="PUBMED">30819888</external_references>
                    <external_references type="DOI">doi:10.1073/pnas.1811929116</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-6993</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>6993 is the 5-fold symmetry reconstruction of filamentous phage IKe</details>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-6994</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
                </relationship>
            </emdb_reference>
        </emdb_list>
    </crossreferences>
    <sample>
        <name>Filamentous phage</name>
        <supramolecule_list>
            <virus_supramolecule supramolecule_id="1">
                <name>Filamentous phage</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <sci_species_name ncbi="12420">Filamentous phage</sci_species_name>
                <sci_species_strain>IKe</sci_species_strain>
                <natural_host database="NCBI">
                    <organism ncbi="562">Escherichia coli</organism>
                    <strain>A527</strain>
                </natural_host>
                <virus_shell shell_id="1">
                    <diameter units="Å">64.0</diameter>
                </virus_shell>
                <virus_type>VIRION</virus_type>
                <virus_isolate>SPECIES</virus_isolate>
                <virus_enveloped>false</virus_enveloped>
                <virus_empty>false</virus_empty>
            </virus_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <other_macromolecule macromolecule_id="1">
                <name>The asymmetric reconstruction of filamentous bacteriophage IKe, including major coat protein shell and inner DNA core.</name>
                <natural_source database="NCBI">
                    <organism ncbi="12420">Filamentous phage</organism>
                    <strain>IKe</strain>
                </natural_source>
                <sequence>
                    <string>AEPNAATNYATEAMDSLKTQAIDLISQTWPVVTTVVVAGLVIRLFKKFSSKAV </string>
                </sequence>
                <classification>other</classification>
            </other_macromolecule>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>helical</method>
            <aggregation_state>filament</aggregation_state>
            <specimen_preparation_list>
                <helical_preparation preparation_id="1">
                    <buffer>
                        <ph>7.5</ph>
                        <details>50 mM Tris at pH 7.5, 10 mM MgCl2, 100 mM NaCl</details>
                    </buffer>
                    <grid>
                        <model>Quantifoil R1.2/1.3</model>
                        <material>COPPER</material>
                        <mesh>200</mesh>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                        <details></details>
                    </vitrification>
                </helical_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <helical_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>
                    <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_electron_dose_per_image units="e/Å^2">40.0</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
                </helical_microscopy>
            </microscopy_list>
            <helical_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <final_reconstruction>
                    <applied_symmetry>
                        <helical_parameters>
                            <delta_z units="Å">16.77</delta_z>
                            <delta_phi units="deg">38.52</delta_phi>
                            <axial_symmetry>C1</axial_symmetry>
                        </helical_parameters>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">4.5</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2.0</version>
                        </software>
                    </software_list>
                    <details>The asymmetric reconstruction of filamentous bacteriophage IKe. The five equivalent orientation positions are generated after helical reconstruction (EMD-6993). The capsid density subtracted images are performed no sampling 3D classification. The best particle with high likelihood value are used for asymmetric reconstruction, which including outer helical shell and inner DNA core.</details>
                    <number_images_used>53784</number_images_used>
                </final_reconstruction>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>Gctf</name>
                        </software>
                    </software_list>
                </ctf_correction>
                <startup_model type_of_model="PDB ENTRY">
                    <pdb_model>
                        <pdb_id>2HI5</pdb_id>
                    </pdb_model>
                </startup_model>
                <final_angle_assignment>
                    <type>NOT APPLICABLE</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </helical_processing>
        </structure_determination>
    </structure_determination_list>
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        <file>emd_6994.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>240</col>
            <row>240</row>
            <sec>240</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>240</x>
            <y>240</y>
            <z>240</z>
        </spacing>
        <cell>
            <a units="Å">312.0</a>
            <b units="Å">312.0</b>
            <c units="Å">312.0</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>-0.057654694</minimum>
            <maximum>0.13232106</maximum>
            <average>0.0005113882</average>
            <std>0.005149029</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.3</x>
            <y units="Å">1.3</y>
            <z units="Å">1.3</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.05</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-6994::::</label>
        <annotation_details>The asymmetric reconstruction of filamentous bacteriophage IKe</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <refinement_protocol>AB INITIO MODEL</refinement_protocol>
                <refinement_space>REAL</refinement_space>
            </modelling>
        </modelling_list>
    </interpretation>
</emd>
