<?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-3571">
    <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>2017-01-14</deposition>
            <header_release>2017-01-25</header_release>
            <map_release>2017-03-22</map_release>
            <update>2024-05-15</update>
        </key_dates>
        <title>dsRNA bacteriophage phi6 nucleocapsid</title>
        <authors_list>
            <author>Sun Z</author>
            <author>El Omari K</author>
        </authors_list>
        <keywords>icosahedral virus capsid shell, virus</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Sun Z</author>
                    <author order="2">El Omari K</author>
                    <author order="3">Sun X</author>
                    <author order="4">Ilca SL</author>
                    <author order="5">Kotecha A</author>
                    <author order="6">Stuart DI</author>
                    <author order="7">Poranen MM</author>
                    <author order="8">Huiskonen JT</author>
                    <title>Double-stranded RNA virus outer shell assembly by bona fide domain-swapping.</title>
                    <journal_abbreviation>Nat Commun</journal_abbreviation>
                    <country>UK</country>
                    <volume>8</volume>
                    <first_page>14814</first_page>
                    <last_page>14814</last_page>
                    <year>2017</year>
                    <external_references type="PUBMED">28287099</external_references>
                    <external_references type="DOI">doi:10.1038/ncomms14814</external_references>
                    <external_references type="ISSN">2041-1723</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>5muu</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Pseudomonas phage phi6</name>
        <supramolecule_list>
            <virus_supramolecule supramolecule_id="1">
                <name>Pseudomonas phage phi6</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>The viral envelope was removed by Triton X-114 extraction</details>
                <sci_species_name ncbi="10879">Pseudomonas phage phi6</sci_species_name>
                <natural_host database="NCBI">
                    <organism ncbi="317">Pseudomonas syringae</organism>
                    <strain>pv.phaseolicola HB10Y</strain>
                </natural_host>
                <virus_shell shell_id="1">
                    <name>Outer shell</name>
                    <diameter units="Å">565.0</diameter>
                    <triangulation>13</triangulation>
                </virus_shell>
                <virus_shell shell_id="2">
                    <name>Inner shell</name>
                    <diameter units="Å">500.0</diameter>
                    <triangulation>1</triangulation>
                </virus_shell>
                <virus_type>VIRION</virus_type>
                <virus_isolate>SPECIES</virus_isolate>
                <virus_enveloped>true</virus_enveloped>
                <virus_empty>false</virus_empty>
            </virus_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Major inner protein P1</name>
                <natural_source database="NCBI">
                    <organism ncbi="10879">Pseudomonas phage phi6</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.08508071099999999</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MFNLKVKDLNGSARGLTQAFAIGELKNQLSVGALQLPLQFTRTFSASMTSELLWEVGKGNIDPVMYARLFFQYAQAGGAL
SVDELVNQFTEYHQSTACNPEIWRKLTAYITGSSNRAIKADAVGKVPPTAILEQLRTLAPSEHELFHHITTDFVCHVLSP
LGFILPDAAYVYRVGRTATYPNFYALVDCVRASDLRRMLTALSSVDSKMLQATFKAKGALAPALISQHLANAATTAFERS
RGNFDANAVVSSVLTILGRLWSPSTPKELDPSARLRNTNGIDQLRSNLALFIAYQDMVKQRGRAEVIFSDEELSSTIIPW
FIEAMSEVSPFKLRPINETTSYIGQTSAIDHMGQPSHVVVYEDWQFAKEITAFTPVKLANNSNQRFLDVEPGISDRMSAT
LAPIGNTFAVSAFVKNRTAVYEAVSQRGTVNSNGAEMTLGFPSVVERDYALDRDPMVAIAALRTGIVDESLEARASNDLK
RSMFNYYAAVMHYAVAHNPEVVVSEHQGVAAEQGSLYLVWNVRTELRIPVGYNAIEGGSIRTPEPLEAIAYNKPIQPSEV
LQAKVLDLANHTTSIHIWPWHEASTEFAYEDAYSVTIRNKRYTAEVKEFELLGLGQRRERVRILKPTVAHAIIQMWYSWF
VEDDRTLAAARRTSRDDAEKLAIDGRRMQNAVTLLRKIEMIGTTGIGASAVHLAQSRIVDQMAGRGLIDDSSDLHVGINR
HRIRIWAGLAVLQMMGLLSRSEAEALTKVLGDSNALGMVVATTDIDPSL</string>
                    <external_references type="UNIPROTKB">P11126</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Packaging enzyme P4</name>
                <natural_source database="NCBI">
                    <organism ncbi="10879">Pseudomonas phage phi6</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.035198426</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MPIVVTQAHIDRVGIAADLLDASPVSLQVLGRPTAINTVVIKTYIAAVMELASKQGGSLAGVDIRPSVLLKDTAIFTKPK
AKSADVESDVDVLDTGIYSVPGLARKPVTHRWPSEGIYSGVTALMGATGSGKSITLNEKLRPDVLIRWGEVAEAYDELDT
AVHISTLDEMLIVCIGLGALGFNVAVDSVRPLLFRLKGAASAGGIVAVFYSLLTDISNLFTQYDCSVVMVVNPMVDAEKI
EYVFGQVMASTVGAILCADGNVSRTMFRTNKGRIFNGAAPLAADTHMPSMDRPTSMKALDHTSIASVAPLERGSVDTDDR
NSAPRRGANFSL</string>
                    <external_references type="UNIPROTKB">P11125</external_references>
                </sequence>
                <ec_number>3.6.1.15</ec_number>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>Major outer capsid protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="10879">Pseudomonas phage phi6</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.016018418</theoretical>
                </molecular_weight>
                <number_of_copies>10</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MLLPVVARAAVPAIESAIAATPGLVSRIAAAIGSKVSPSAILAAVKSNPVVAGLTLAQIGSTGYDAYQQLLENHPEVAEM
LKDLSFKADEIQPDFIGNLGQYREELELVEDAARFVGGMSNLIRLRQALELDIKYYGLKMQLNDMGYRS</string>
                    <external_references type="UNIPROTKB">P07579</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">3</concentration>
                    <buffer>
                        <ph>7.2</ph>
                    </buffer>
                    <grid>
                        <model>C-flat</model>
                        <material>COPPER</material>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY ARRAY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">15</time>
                            <atmosphere>AIR</atmosphere>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <instrument>FEI VITROBOT MARK III</instrument>
                    </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="µm">50.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.0</nominal_cs>
                    <nominal_defocus_max units="µm">0.3</nominal_defocus_max>
                    <calibrated_defocus_max units="µm">3.0</calibrated_defocus_max>
                    <nominal_magnification>160000.0</nominal_magnification>
                    <calibrated_magnification>37037.0</calibrated_magnification>
                    <specimen_holder_model>OTHER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <temperature>
                        <temperature_min units="K">80.0</temperature_min>
                        <temperature_max units="K">120.0</temperature_max>
                    </temperature>
                    <alignment_procedure>
                        <coma_free/>
                    </alignment_procedure>
                    <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 SUMMIT (4k x 4k)</film_or_detector_model>
                            <detector_mode>COUNTING</detector_mode>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">3710</width>
                                    <height units="pixel">3710</height>
                                </dimensions>
                                <frames_per_image>1-22</frames_per_image>
                            </digitization_details>
                            <number_real_images>900</number_real_images>
                            <average_exposure_time units="s">0.2</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">0.73</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>16466</number_selected>
                </particle_selection>
                <startup_model type_of_model="EMDB MAP">
                    <emdb_id>EMD-1207</emdb_id>
                </startup_model>
                <final_reconstruction>
                    <applied_symmetry>
                        <point_group>I</point_group>
                    </applied_symmetry>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">4.0</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>1.3</version>
                        </software>
                    </software_list>
                    <number_images_used>13291</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing/>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>1.3</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing/>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>1.3</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <number_classes>4</number_classes>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>1.3</version>
                        </software>
                    </software_list>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="536871">
        <file>emd_3571.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">691.2</a>
            <b units="Å">691.2</b>
            <c units="Å">691.2</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>-0.07375267</minimum>
            <maximum>0.14329888</maximum>
            <average>0.00020935167</average>
            <std>0.008287506</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.35</x>
            <y units="Å">1.35</y>
            <z units="Å">1.35</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.02</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-3571::::</label>
        <annotation_details>dsRNA bacteriophage phi6 nucleocapsid</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>4K7H</access_code>
                    <chain>
                        <chain_id>A</chain_id>
                        <residue_range>1-760</residue_range>
                        <source_name>PDB</source_name>
                        <initial_model_type>experimental model</initial_model_type>
                    </chain>
                </initial_model>
                <refinement_protocol>RIGID BODY FIT</refinement_protocol>
                <details>The structure of P1 was fitted in the map using COOT as a rigid body in two different positions corresponding to subunits P1A and P1B. P1A and P1B main-chains and side-chains were adjusted using manual and real space fitting in COOT. Structure was refined in Phenix.real_space_refine applying secondary structure, rotamer, and Ramachandran plot restraints.</details>
                <refinement_space>REAL</refinement_space>
            </modelling>
            <modelling>
                <refinement_protocol>AB INITIO MODEL</refinement_protocol>
                <details>The structure of P8 (L3 to Y147) was built manually in COOT and side-chains were adjusted using manual and real space fitting in COOT. Structure was refined in Phenix.real_space_refine applying secondary structure, rotamer, and Ramachandran plot restraints.</details>
                <refinement_space>REAL</refinement_space>
            </modelling>
            <modelling>
                <refinement_protocol>AB INITIO MODEL</refinement_protocol>
                <details>The structure of P4 C-terminus (R292 to L332) was built manually in COOT and side-chains were adjusted using manual and real space fitting in COOT. Structure was refined in Phenix.real_space_refine applying secondary structure, rotamer, and Ramachandran plot restraints.</details>
            </modelling>
        </modelling_list>
    </interpretation>
</emd>
