<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" emdb_id="EMD-3859" version="3.0.0.0" xsi:schemaLocation="https://github.com/emdb-empiar/emdb-schemas/blob/master/v3/v3_0_0_0/emdb.xsd">
    <admin>
        <current_status>
            <date>2018-01-31</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2017-09-06</deposition>
            <header_release>2017-11-22</header_release>
            <map_release>2017-11-22</map_release>
            <update>2018-01-31</update>
        </key_dates>
        <title>Structure of Aeropyrum pernix bacilloform virus 1 APBV1 helical capsid pointy end</title>
        <authors_list>
            <author>Huiskonen JT</author>
            <author>Pchelkine D</author>
            <author>Gillum A</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Ptchelkine D</author>
                    <author order="2">Gillum A</author>
                    <author order="3">Mochizuki T</author>
                    <author order="4">Lucas-Staat S</author>
                    <author order="5">Liu Y</author>
                    <author order="6">Krupovic M</author>
                    <author order="7">Phillips SEV</author>
                    <author order="8">Prangishvili D</author>
                    <author order="9">Huiskonen JT</author>
                    <title>Unique architecture of thermophilic archaeal virus APBV1 and its genome packaging.</title>
                    <journal_abbreviation>Nat Commun</journal_abbreviation>
                    <country>UK</country>
                    <volume>8</volume>
                    <first_page>1436</first_page>
                    <last_page>1436</last_page>
                    <year>2017</year>
                    <external_references type="PUBMED">29127347</external_references>
                    <external_references type="DOI">doi:10.1038/s41467-017-01668-0</external_references>
                    <external_references type="ISSN">2041-1723</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-3859</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
                </relationship>
                <details>Structure of major capsid protein VP1 of Aeropyrum pernix bacilliform virus 1 APBV1</details>
            </emdb_reference>
        </emdb_list>
    </crossreferences>
    <sample>
        <name>Aeropyrum pernix bacilliform virus 1</name>
        <supramolecule_list>
            <virus_supramolecule supramolecule_id="1">
                <name>Aeropyrum pernix bacilliform virus 1</name>
                <parent>0</parent>
                <sci_species_name ncbi="700542">Aeropyrum pernix bacilliform virus 1</sci_species_name>
                <natural_host database="NCBI">
                    <organism ncbi="56636">Aeropyrum pernix</organism>
                </natural_host>
                <virus_type>VIRION</virus_type>
                <virus_isolate>SPECIES</virus_isolate>
                <virus_enveloped>false</virus_enveloped>
                <virus_empty>false</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.</ph>
                        <details>distilled water</details>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE-PROPANE</cryogen_name>
                        <details />
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>FEI POLARA 300</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">2.0</nominal_cs>
                    <calibrated_magnification>37037.</calibrated_magnification>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <specialist_optics>
                        <energy_filter>
                            <name>GIF Quantum LS</name>
                            <lower_energy_threshold units="eV">0</lower_energy_threshold>
                            <upper_energy_threshold units="eV">20</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>COUNTING</detector_mode>
                            <average_exposure_time units="s">0.2</average_exposure_time>
                            <average_electron_dose_per_image units="e/&#8491;^2">1.0</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>6290</number_selected>
                    <details>Pointy ends extracted from helical particles</details>
                </particle_selection>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>CTFFIND</name>
                            <version>3</version>
                        </software>
                    </software_list>
                </ctf_correction>
                <startup_model type_of_model="OTHER">
                    <details>Cylindrical average of pointy ends</details>
                </startup_model>
                <final_reconstruction>
                    <applied_symmetry>
                        <point_group>C5</point_group>
                    </applied_symmetry>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution res_type="BY AUTHOR" units="&#8491;">7.2</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>1.4</version>
                        </software>
                    </software_list>
                    <number_images_used>2572</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>RANDOM ASSIGNMENT</type>
                    <details>In-plane angle was calculated from the images. Out-of-plane angle was set to 90 degrees. The third angle was randomized.</details>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing />
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>1.4</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="131073">
        <file>emd_3859.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>320</col>
            <row>320</row>
            <sec>320</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>320</x>
            <y>320</y>
            <z>320</z>
        </spacing>
        <cell>
            <a units="&#8491;">432.0</a>
            <b units="&#8491;">432.0</b>
            <c units="&#8491;">432.0</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>-0.03811019</minimum>
            <maximum>0.08176798</maximum>
            <average>0.00017475817</average>
            <std>0.0052796844</std>
        </statistics>
        <pixel_spacing>
            <x units="&#8491;">1.35</x>
            <y units="&#8491;">1.35</y>
            <z units="&#8491;">1.35</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.015</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-3859::::</label>
        <annotation_details>APBV1 pointy tip</annotation_details>
    </map>
</emd>