<?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_11_0/emdb.xsd" version="3.0.11.0" emdb_id="EMD-15266">
    <admin>
        <current_status>
            <date>2026-03-18</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2022-06-27</deposition>
            <header_release>2022-12-28</header_release>
            <map_release>2022-12-28</map_release>
            <update>2026-03-18</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Biotechnology and Biological Sciences Research Council (BBSRC)</funding_body>
                <code>BB/L014130/1</code>
                <country>United Kingdom</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Biotechnology and Biological Sciences Research Council (BBSRC)</funding_body>
                <code>BBS/E/J/000PR9794</code>
                <country>United Kingdom</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Wellcome Trust</funding_body>
                <code>108466/Z/15/Z</code>
                <country>United Kingdom</country>
            </grant_reference>
        </grant_support>
        <title>Nudaurelia capensis omega virus maturation intermediates captured at pH5.6 (insect cell expressed VLPs): consensus map</title>
        <authors_list>
            <author>Castells-Graells R</author>
            <author>Hesketh EL</author>
            <author>Johnson JE</author>
            <author>Ranson NA</author>
            <author>Lawson DM</author>
            <author>Lomonossoff GP</author>
        </authors_list>
        <keywords>ICOSAHEDRAL VIRUS, AUTO-CATALYTIC CLEAVAGE, VIRUS MATURATION, VIRUS-LIKE PARTICLE, VIRUS LIKE PARTICLE</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Castells-Graells R</author>
                    <author order="2">Hesketh EL</author>
                    <author order="3">Matsui T</author>
                    <author ORCID="0000-0001-9782-3721" order="4">Johnson JE</author>
                    <author ORCID="0000-0002-3640-5275" order="5">Ranson NA</author>
                    <author ORCID="0000-0002-7637-4303" order="6">Lawson DM</author>
                    <author order="7">Lomonossoff GP</author>
                    <title>Unraveling the maturation pathway of a eukaryotic virus through cryo-EM.</title>
                    <journal_abbreviation>Proc.Natl.Acad.Sci.USA</journal_abbreviation>
                    <country>US</country>
                    <volume>123</volume>
                    <first_page>e2420493123</first_page>
                    <last_page>e2420493123</last_page>
                    <year>2026</year>
                    <external_references type="PUBMED">41739563</external_references>
                    <external_references type="DOI">doi:10.1073/pnas.2420493123</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>
        <other_db_list>
            <db_reference>
                <db_name>EMDB</db_name>
                <accession_id>EMD-15266</accession_id>
                <content_type>associated EM volume</content_type>
            </db_reference>
        </other_db_list>
    </crossreferences>
    <sample>
        <name>Nudaurelia capensis omega virus</name>
        <supramolecule_list>
            <virus_supramolecule supramolecule_id="1">
                <name>Nudaurelia capensis omega virus</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>expressed in Spodoptera frugiperda Sf21 cells</details>
                <sci_species_name ncbi="12541">Nudaurelia capensis omega virus</sci_species_name>
                <natural_host database="NCBI">
                    <organism ncbi="2059211">Gonimbrasia cytherea</organism>
                </natural_host>
                <molecular_weight>
                    <theoretical units="MDa">16.76</theoretical>
                </molecular_weight>
                <virus_shell shell_id="1">
                    <name>coat</name>
                    <diameter units="Å">430.0</diameter>
                    <triangulation>4</triangulation>
                </virus_shell>
                <virus_type>VIRUS-LIKE PARTICLE</virus_type>
                <virus_isolate>OTHER</virus_isolate>
                <virus_enveloped>false</virus_enveloped>
                <virus_empty>false</virus_empty>
            </virus_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Nudaurelia capensis omega virus coat protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="12541">Nudaurelia capensis omega virus</organism>
                </natural_source>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7108">Spodoptera frugiperda</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MDSNSASGKRRSRNVRIAANTVNVAPKQRQARGRRARSRANNIDNVTAAAQELGQSLDANVITFPTNVATMPEFRSWARG
KLDIDQDSIGWYFKYLDPAGATESARAVGEYSKIPDGLVKFSVDAEIREIYNEECPTVSDASIPLDGAQWSLSIISYPMF
RTAYFAVANVDNKEISLDVTNDLIVWLNNLASWRDVVDSGQWFTFSDDPTWFVRIRVLHPTYDLPDPTEGLLRTVSDYRL
TYKSITCEANMPTLVDQGFWIGGHYALTPIATTQNAVEGSGFVHPFNVTRPGIAAGVTLTWASMPPGGSAPSGDPAWIPD
STTQFQWRHGGFDAPTGVITYTIPRGYTMQYFDTTTNEWNGFANPDDVVTFGQTGGAAGTNATITITAPTVTLTILATTT
SAANVINFRNLDAETTAASNRSEVPLPPLTFGQTAPNNPKIEQTLVKDTLGSYLVHSKMRNPVFQLTPASSFGAISFTNP
GFDRNLDLPGFGGIRDSLDVNMSTAVCHFRSLSKSCSIVTKTYQGWEGVTNVNTPFGQFAHSGLLKNDEILCLADDLATR
LTGVYGATDNFAAAVLAFAANMLTSVLKSEATTSVIKELGNQATGLANQGLARLPGLLASIPGKIAARVRARRDRRRAAR
MNNN</string>
                    <external_references type="UNIPROTKB">Q4TVS9</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">0.3</concentration>
                    <buffer>
                        <ph>5.6</ph>
                    </buffer>
                    <grid>
                        <material>COPPER</material>
                        <mesh>400</mesh>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <instrument>FEI VITROBOT MARK IV</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">70.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">0.8</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.5</nominal_defocus_max>
                    <nominal_magnification>75000.0</nominal_magnification>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>FEI FALCON III (4k x 4k)</film_or_detector_model>
                            <detector_mode>INTEGRATING</detector_mode>
                            <number_grids_imaged>2</number_grids_imaged>
                            <number_real_images>16478</number_real_images>
                            <average_exposure_time units="s">1.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">49.1</average_electron_dose_per_image>
                            <details>Reconstructed from 2 datasets collected at doses of 48.7 and 50.4 electrons per Angstrom squared, respectively. The average of these two values is given.</details>
                        </image_recording>
                    </image_recording_list>
                </single_particle_microscopy>
            </microscopy_list>
            <singleparticle_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>Gctf</name>
                            <version>1.06</version>
                        </software>
                    </software_list>
                    <type>PHASE FLIPPING AND AMPLITUDE CORRECTION</type>
                </ctf_correction>
                <startup_model type_of_model="PDB ENTRY">
                    <pdb_model>
                        <pdb_id>7ANM</pdb_id>
                    </pdb_model>
                </startup_model>
                <final_reconstruction>
                    <number_classes_used>1</number_classes_used>
                    <applied_symmetry>
                        <point_group>I</point_group>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">3.39</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.0.3</version>
                        </software>
                    </software_list>
                    <number_images_used>15977</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.0.3</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.0.3</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.0.3</version>
                        </software>
                    </software_list>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="536871">
        <file>emd_15266.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>512</col>
            <row>512</row>
            <sec>512</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>512</x>
            <y>512</y>
            <z>512</z>
        </spacing>
        <cell>
            <a units="Å">766.80194</a>
            <b units="Å">766.80194</b>
            <c units="Å">766.80194</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>-0.039423674</minimum>
            <maximum>0.08879694</maximum>
            <average>-0.00034010556</average>
            <std>0.0052286154</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.49766</x>
            <y units="Å">1.49766</y>
            <z units="Å">1.49766</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.02</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-15266::::</label>
        <annotation_details>Postprocessed map from Relion</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <details>No model was generated from the consensus map</details>
            </modelling>
        </modelling_list>
        <segmentation_list>
            <segmentation>
                <file>emd_15266_msk_1.map</file>
            </segmentation>
        </segmentation_list>
        <half_map_list>
            <half_map format="CCP4" size_kbytes="536871">
                <file>emd_15266_half_map_1.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>512</col>
                    <row>512</row>
                    <sec>512</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>512</x>
                    <y>512</y>
                    <z>512</z>
                </spacing>
                <cell>
                    <a units="Å">766.80194</a>
                    <b units="Å">766.80194</b>
                    <c units="Å">766.80194</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>-0.018383527</minimum>
                    <maximum>0.05283697</maximum>
                    <average>-0.00035300042</average>
                    <std>0.0043173437</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.49766</x>
                    <y units="Å">1.49766</y>
                    <z units="Å">1.49766</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-15266::::</label>
                <annotation_details>Refine3D half map 2 from Relion</annotation_details>
            </half_map>
            <half_map format="CCP4" size_kbytes="536871">
                <file>emd_15266_half_map_2.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>512</col>
                    <row>512</row>
                    <sec>512</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>512</x>
                    <y>512</y>
                    <z>512</z>
                </spacing>
                <cell>
                    <a units="Å">766.80194</a>
                    <b units="Å">766.80194</b>
                    <c units="Å">766.80194</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>-0.018909344</minimum>
                    <maximum>0.05318147</maximum>
                    <average>-0.00032721073</average>
                    <std>0.004315913</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.49766</x>
                    <y units="Å">1.49766</y>
                    <z units="Å">1.49766</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-15266::::</label>
                <annotation_details>Refine3D half map 1 from Relion</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>
