<?xml version="1.0" encoding="UTF-8"?>
<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://ftp.ebi.ac.uk/pub/databases/em_ebi/emdb_related/emdb-schemas/emdb_schemas/v3/v3_0_9_3/emdb.xsd" version="3.0.9.3" emdb_id="EMD-3867">
    <admin>
        <current_status>
            <date>2024-05-15</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2017-09-12</deposition>
            <header_release>2017-10-18</header_release>
            <map_release>2018-07-18</map_release>
            <update>2024-05-15</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>European Research Council</funding_body>
                <code>FP/2007-2013 (355855)</code>
                <country>Czech Republic</country>
            </grant_reference>
            <grant_reference>
                <funding_body>European Molecular Biology Organization</funding_body>
                <code>IG-3041</code>
                <country>Czech Republic</country>
            </grant_reference>
        </grant_support>
        <title>Sacbrood virus of honeybee - expansion state II</title>
        <authors_list>
            <author>Plevka P</author>
            <author>Prochazkova M</author>
        </authors_list>
        <keywords>empty particle, icosahedral virus particle, iflavirus, expanded particle, VIRUS</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0002-4229-9202" order="1">Prochazkova M</author>
                    <author ORCID="0000-0002-1190-0210" order="2">Fuzik T</author>
                    <author order="3">Skubnik K</author>
                    <author order="4">Moravcova J</author>
                    <author order="5">Ubiparip Z</author>
                    <author order="6">Pridal A</author>
                    <author ORCID="0000-0003-4215-3315" order="7">Plevka P</author>
                    <title>Virion structure and genome delivery mechanism of sacbrood honeybee virus.</title>
                    <journal_abbreviation>Proc. Natl. Acad. Sci. U.S.A.</journal_abbreviation>
                    <country>US</country>
                    <volume>115</volume>
                    <first_page>7759</first_page>
                    <last_page>7764</last_page>
                    <year>2018</year>
                    <external_references type="PUBMED">29987012</external_references>
                    <external_references type="DOI">doi:10.1073/pnas.1722018115</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>
        <pdb_list>
            <pdb_reference>
                <pdb_id>6eh1</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Sacbrood virus</name>
        <supramolecule_list>
            <virus_supramolecule supramolecule_id="1">
                <name>Sacbrood virus</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>
                        <macromolecule_id>4</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>Isolated from honeybee pupae</details>
                <sci_species_name ncbi="89463">Sacbrood virus</sci_species_name>
                <natural_host database="NCBI">
                    <organism ncbi="7460">Apis mellifera</organism>
                </natural_host>
                <virus_shell shell_id="1">
                    <name>capsid</name>
                    <diameter units="Å">278.86</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>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>structural protein VP1</name>
                <natural_source database="NCBI">
                    <organism ncbi="89463">Sacbrood virus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.02427948</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>IKDILRRPVLLFNHVELDPDYTGFFIPIMPPSRMMQYKSGDKETSFQRLIGRTPQAAIMNLFRFWRGSLRYTIIIHSTDG
HPIYVTHVPHTGNRVYGLMKVNNLHEYTKVPIFGCGLTTEMIIPSVNPSICVEVPFDTENNWAVTFDEDAQRNYSWRDKG
DTVTGHLVVTPVVSVYMSVWVEAGDDFEVSNFYGPPSVKTNDWNYAFSDEH</string>
                    <external_references type="UNIPROTKB">A0A223FUL8</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>structural protein VP2</name>
                <natural_source database="NCBI">
                    <organism ncbi="89463">Sacbrood virus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.020360313999999997</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>WMPINSIRVTVNGKRNDLLAQYYIPEDFLSTHAKCAPNTIPFETYVYGKYELEMKFVANGNKFQCGKVIISVKFDSYQAD
NINTGFQAALSRPHIMLDLSTNNEGVLKIPFRYHRAFVRNQTHKTATAGVRPGKFASIYVQVLSPLQTGEGGANDMFIRP
FYRYTRAEFAGMSYKVPLT</string>
                    <external_references type="UNIPROTKB">A0A223DN66</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>structural protein VP3</name>
                <natural_source database="NCBI">
                    <organism ncbi="89463">Sacbrood virus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.025574461</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>DEPRTTLDIARIWGLRSTFNWGSGDEHGKELFNTVLDPGLRFYDQDYEGQITPMEYVTGLYNFWSGPIELRFDFVSNAFH
TGTVIISAEYNRSSTNTDECQSHSTYTKTFHLGEQKSVHFTVPYIYDTVVRRNTASAYLPVTDYDKVDNVSRAQAMGIRA
ESKMRVKVRVVNVLRPVASTTSTIEVLVYMRGGKNYALHGLKQSTYWPSNSVVPIDSFPPDGYDP</string>
                    <external_references type="UNIPROTKB">A0A223DN66</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="4">
                <name>minor capsid protein MiCP</name>
                <natural_source database="NCBI">
                    <organism ncbi="89463">Sacbrood virus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.003107398</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>DNPHRFLPANVSNRWNEYSSAYLPRV</string>
                    <external_references type="UNIPROTKB">Q9IGK7</external_references>
                </sequence>
            </protein_or_peptide>
        </macromolecule_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">
                    <concentration units="mg/mL">15</concentration>
                    <buffer>
                        <ph>5.8</ph>
                        <component>
                            <concentration units="mM">137.0</concentration>
                            <formula>NaCl</formula>
                            <name>sodium chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">2.7</concentration>
                            <formula>KCl</formula>
                            <name>potassium chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">10.0</concentration>
                            <formula>Na2HPO4</formula>
                            <name>disodium phosphate</name>
                        </component>
                        <component>
                            <concentration units="mM">1.8</concentration>
                            <formula>KH2PO4</formula>
                            <name>potassium phosphate</name>
                        </component>
                    </buffer>
                    <grid>
                        <model>Quantifoil R2/1</model>
                        <material>COPPER</material>
                        <mesh>300</mesh>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">15</time>
                            <atmosphere>OTHER</atmosphere>
                            <pressure units="kPa">101.325</pressure>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">70</chamber_humidity>
                        <chamber_temperature units="K">298</chamber_temperature>
                        <instrument>FEI VITROBOT MARK II</instrument>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_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">100.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">1.0</nominal_defocus_min>
                    <nominal_defocus_max units="µm">4.0</nominal_defocus_max>
                    <nominal_magnification>75000.0</nominal_magnification>
                    <calibrated_magnification>74325.0</calibrated_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <alignment_procedure>
                        <coma_free/>
                    </alignment_procedure>
                    <details>Preliminar grid screening was performed manually on FEI Tecnai F20 (cryo stage).</details>
                    <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>COUNTING</detector_mode>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">4096</width>
                                    <height units="pixel">4096</height>
                                </dimensions>
                                <frames_per_image>2-16</frames_per_image>
                            </digitization_details>
                            <number_grids_imaged>1</number_grids_imaged>
                            <average_exposure_time units="s">1.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">21.0</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>51000</number_selected>
                    <details>Full virions were selected together with empty particles from the same set of micrographs. Subsequent 2D classification sorted the particles of two types. Full and empty particles were further processed separately. Full particles classified in two types - expansion state I and II.</details>
                </particle_selection>
                <startup_model type_of_model="PDB ENTRY">
                    <pdb_model>
                        <pdb_id>5CDC</pdb_id>
                    </pdb_model>
                    <details>Deposited IAPV model low pass filtered to resolution 40 A.</details>
                </startup_model>
                <final_reconstruction>
                    <number_classes_used>1</number_classes_used>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">7.25</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2</version>
                        </software>
                    </software_list>
                    <number_images_used>5330</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>OTHER</type>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing/>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2</version>
                            <processing_details>relion_refine_mpi</processing_details>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <number_classes>3</number_classes>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2</version>
                        </software>
                    </software_list>
                    <details>re-classification after initial 3D refinement</details>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="651086">
        <file>emd_3867.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>546</col>
            <row>546</row>
            <sec>546</sec>
        </dimensions>
        <origin>
            <col>-273</col>
            <row>-273</row>
            <sec>-273</sec>
        </origin>
        <spacing>
            <x>546</x>
            <y>546</y>
            <z>546</z>
        </spacing>
        <cell>
            <a units="Å">580.398</a>
            <b units="Å">580.398</b>
            <c units="Å">580.398</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>-0.12586766</minimum>
            <maximum>0.21891223</maximum>
            <average>0.0012369186</average>
            <std>0.010741303</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.063</x>
            <y units="Å">1.063</y>
            <z units="Å">1.063</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>4.5</level>
                <source>EMDB</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-3867::::</label>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <refinement_protocol>RIGID BODY FIT</refinement_protocol>
                <target_criteria>R-factor</target_criteria>
                <refinement_space>REAL</refinement_space>
                <overall_bvalue>268.70999999999998</overall_bvalue>
            </modelling>
        </modelling_list>
    </interpretation>
</emd>
