<?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-4063">
    <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>2016-07-21</deposition>
            <header_release>2016-10-19</header_release>
            <map_release>2017-02-15</map_release>
            <update>2024-05-15</update>
        </key_dates>
        <title>Single particle reconstruction of slow bee paralysis virus  virion at pH 5.5</title>
        <authors_list>
            <author>Kalynych S</author>
            <author>Fuzik T</author>
            <author>Plevka P</author>
        </authors_list>
        <keywords>icosahedral virus, honebee virus, iflavirus, virus</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Kalynych S</author>
                    <author order="2">Fuzik T</author>
                    <author order="3">Pridal A</author>
                    <author order="4">de Miranda J</author>
                    <author order="5">Plevka P</author>
                    <title>Cryo-EM study of slow bee paralysis virus at low pH reveals iflavirus genome release mechanism.</title>
                    <journal_abbreviation>Proc. Natl. Acad. Sci. U.S.A.</journal_abbreviation>
                    <country>US</country>
                    <volume>114</volume>
                    <first_page>598</first_page>
                    <last_page>603</last_page>
                    <year>2017</year>
                    <external_references type="PUBMED">28053231</external_references>
                    <external_references type="DOI">doi:10.1073/pnas.1616562114</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>5lk7</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Slow bee paralysis virus</name>
        <supramolecule_list>
            <virus_supramolecule supramolecule_id="1">
                <name>Slow bee paralysis 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_list>
                <sci_species_name ncbi="458132">Slow bee paralysis virus</sci_species_name>
                <natural_host database="NCBI">
                    <organism ncbi="7460">Apis mellifera</organism>
                    <strain>3</strain>
                </natural_host>
                <virus_shell shell_id="1">
                    <name>icosahedral</name>
                </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>
            <protein_or_peptide macromolecule_id="1">
                <name>VP1</name>
                <natural_source database="NCBI">
                    <organism ncbi="458132">Slow bee paralysis virus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.030307210999999997</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MERTFTPNVMQPTPLLPTTNDGRVTFGEAFNDLKDLARRYQLYWEGTILEGNLRAIRRNSALVQLPLYPHGLRIQPDVNN
PIWNIMRDGHIPVISSGFRYFRGGLRLRIVVEGLNSCVWVQHHPDRPSIFSRPIIGRYIAAKDAYRNHAYAAYVQNMSVN
RTIEVEVPFYQPGLYGMLNASDNNTANSFDRLRFTGLGDLLIGIEGEQPIPKEGIEISVYYSIADDFSFNIFCGFPPMVY
CDETYSAATPDLAQYFEDEVTIAQPE</string>
                    <external_references type="UNIPROTKB">A7LM73</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>VP2</name>
                <natural_source database="NCBI">
                    <organism ncbi="458132">Slow bee paralysis virus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.029824205</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MDRPEGSEERTVQTSNVVLGETNIESQDIASKEYSPTWDRLASSEVSDEYPMLTDRWLFWKSVKWEVNDSAFGKMLVQEK
FPQSWVQMDVNVNNIPRYTNIPNFIPFNIHQYMRADFEVKIYVNPNDFVSGWLIMAFLYQGSEMFDYKLRRNPAALMQMP
HVLVNVGAANEATLKIPYRYVRPFMRCKDILRGDNLITGVTEPLNMGVLFVEVLIPFRTSAASSAPKSLDVSLFVKMTNA
KFTGMVDGSIALLSKPIALPE</string>
                    <external_references type="UNIPROTKB">A7LM73</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>VP3</name>
                <natural_source database="NCBI">
                    <organism ncbi="458132">Slow bee paralysis virus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.04762391</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>DNPPDPTPAKFFVPIPSHSWAHGTNTSEPTNTLRLDGGVVGVGRSDDIGTSDTAISGIIGVYGLLKPFDWNANDTGRNVG
GHLLWSMPVHPQVDKDQVIQVMTQSKLTQYYLPPISVVSSLYAYTRGSIKYKFLFGNNPRHNARLLVAYIPGISSDNRLT
LERARNSAHVVFSLNEVSEFVFTVPYITDTMWWPRKYGGPQAAGEFVAPSYICMFILNPLVAMESVPSIVTIVPMIAAGD
DFEVAVPAQPAVGLSRNIDVIYPKDSIISFKSGYFPVYVGSWHSFFDSTKAILRYGAVSDHIAQLGNIPANVNRKAFWIV
VGDTIKFKTKLDKINGTEWFIPEGEYTLGYGVVWRDGAYAYMVPYPLTPLGEKIAQYTASLLASNTAISQIRPYIPDYIV
DSAASKDNILWSPIEDRLRAQTEWVMAEPE</string>
                    <external_references type="UNIPROTKB">A7LM73</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">1.8</concentration>
                    <buffer>
                        <ph>5.5</ph>
                        <details>30 mM Sodium Acetate
50 mM Sodium Chloride</details>
                    </buffer>
                    <grid>
                        <model>Quantifoil R2/1</model>
                        <material>COPPER</material>
                        <mesh>300</mesh>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                        <details>blot force 0, 
blot time 2 s.. </details>
                    </vitrification>
                    <details>sample was purifed froim natural source and dialyzed overnight into sodium acetate buffer</details>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>FEI TITAN KRIOS</microscope>
                    <illumination_mode>OTHER</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">3.0</nominal_defocus_max>
                    <nominal_magnification>75000.0</nominal_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>
                    <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>INTEGRATING</detector_mode>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">4096</width>
                                    <height units="pixel">4096</height>
                                </dimensions>
                                <frames_per_image>1-7</frames_per_image>
                            </digitization_details>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>5325</number_real_images>
                            <average_exposure_time units="s">0.5</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>4712</number_selected>
                </particle_selection>
                <startup_model type_of_model="PDB ENTRY">
                    <pdb_model>
                        <pdb_id>5J98</pdb_id>
                    </pdb_model>
                    <details>devoid of the protruding domains.</details>
                </startup_model>
                <final_reconstruction>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">3.42</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>10350</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>NOT APPLICABLE</type>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>OTHER</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.1</version>
                        </software>
                    </software_list>
                    <details>RELION 3D refinement was used for angle assignment &amp; refinement</details>
                </final_angle_assignment>
                <final_three_d_classification>
                    <number_classes>4</number_classes>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>1.4</version>
                        </software>
                    </software_list>
                    <details>RELION 3D classification was used for final  classification</details>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="219489">
        <file>emd_4063.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>380</col>
            <row>380</row>
            <sec>380</sec>
        </dimensions>
        <origin>
            <col>-190</col>
            <row>-190</row>
            <sec>-190</sec>
        </origin>
        <spacing>
            <x>380</x>
            <y>380</y>
            <z>380</z>
        </spacing>
        <cell>
            <a units="Å">406.6</a>
            <b units="Å">406.6</b>
            <c units="Å">406.6</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
        </cell>
        <axis_order>
            <fast>Y</fast>
            <medium>X</medium>
            <slow>Z</slow>
        </axis_order>
        <statistics>
            <minimum>-9.694521999999999</minimum>
            <maximum>14.482196</maximum>
            <average>-0.000000000696011</average>
            <std>1.0000001</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.07</x>
            <y units="Å">1.07</y>
            <z units="Å">1.07</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>4.66</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-4063::::</label>
        <annotation_details>single particle reconstruction of SBPV virion at low pH</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <refinement_protocol>OTHER</refinement_protocol>
                <refinement_space>RECIPROCAL</refinement_space>
                <overall_bvalue>49.700000000000003</overall_bvalue>
            </modelling>
        </modelling_list>
    </interpretation>
</emd>
