<emd emdb_id="EMD-5187" version="3.0.1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://github.com/emdb-empiar/emdb-schemas/blob/master/v3/v3_0_1_1/emdb_relaxed.xsd">
    <admin>
        <current_status>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2010-04-15</deposition>
            <header_release>2010-12-08</header_release>
            <map_release>2011-01-19</map_release>
            <update>2011-09-23</update>
        </key_dates>
        <title>Cryo-EM of SV40 Virion</title>
        <authors_list>
            <author>Shen PS</author>
            <author>Enderlein D</author>
            <author>Nelson C</author>
            <author>Carter WS</author>
            <author>Kawano M</author>
            <author>Xing L</author>
            <author>Swenson RD</author>
            <author>Olson NH</author>
            <author>Baker TS</author>
            <author>Cheng RH</author>
            <author>Atwood WJ</author>
            <author>Johne R</author>
            <author>Belnap DM</author>
        </authors_list>
        <keywords>SV40, simian virus 40, polyomavirus, polyomaviruses</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Shen PS</author>
                    <author order="2">Enderlein D</author>
                    <author order="3">Nelson CD</author>
                    <author order="4">Carter WS</author>
                    <author order="5">Kawano M</author>
                    <author order="6">Xing L</author>
                    <author order="7">Swenson RD</author>
                    <author order="8">Olson NH</author>
                    <author order="9">Baker TS</author>
                    <author order="10">Cheng RH</author>
                    <author order="11">Atwood WJ</author>
                    <author order="12">Johne R</author>
                    <author order="13">Belnap DM</author>
                    <title>The structure of avian polyomavirus reveals variably sized capsids, non-conserved inter-capsomere interactions, and a possible location of the minor capsid protein VP4.</title>
                    <journal>VIROLOGY</journal>
                    <volume>411</volume>
                    <first_page>142</first_page>
                    <last_page>152</last_page>
                    <year>2011</year>
                    <external_references type="PUBMED">21239031</external_references>
                    <external_references type="DOI">doi:10.1016/j.virol.2010.12.005</external_references>
                </journal_citation>
            </primary_citation>
            <secondary_citation>
                <journal_citation published="false">
                    <author order="1">Belnap DM</author>
                    <author order="2">Olson NH</author>
                    <author order="3">Cladel NM</author>
                    <author order="4">Newcomb WW</author>
                    <author order="5">Brown JC</author>
                    <author order="6">Kreider JW</author>
                    <author order="7">Christensen ND</author>
                    <author order="8">Baker TS</author>
                    <title>Conserved features in papillomavirus and polyomavirus capsids</title>
                    <journal>J.MOL.BIOL.</journal>
                </journal_citation>
            </secondary_citation>
        </citation_list>
    </crossreferences>
    <sample>
        <name>simian virus 40</name>
        <supramolecule_list>
            <sample_supramolecule supramolecule_id="1000">
                <name>simian virus 40</name>
                <oligomeric_state>virions</oligomeric_state>
                <number_unique_components>1</number_unique_components>
            </sample_supramolecule>
            <virus_supramolecule supramolecule_id="1">
                <name synonym="SV40">Simian virus 40</name>
                <details>Cryo-EM of simian virus 40 over holey carbon grids</details>
                <sci_species_name ncbi="10633">Simian virus 40</sci_species_name>
                <natural_host database="NCBI">
                    <organism />
                    <synonym_organism>VERTEBRATES</synonym_organism>
                </natural_host>
                <host_system database="NCBI" />
                <virus_shell shell_id="1">
                    <name>VP1</name>
                    <diameter units="&#8491;">500</diameter>
                    <triangulation>7</triangulation>
                </virus_shell>
                <virus_type>VIRION</virus_type>
                <virus_isolate>STRAIN</virus_isolate>
                <virus_enveloped>false</virus_enveloped>
                <virus_empty>false</virus_empty>
                <syn_species_name>SV40</syn_species_name>
            </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>7.4</ph>
                    </buffer>
                    <grid>
                        <details>400 mesh copper grid (holey carbon)</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <instrument>HOMEMADE PLUNGER</instrument>
                        <details>Vitrification instrument: homemade. vitrification carried out in normal, room atmosphere</details>
                        <method>blotted for a few seconds before plunging</method>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>FEI/PHILIPS EM420</microscope>
                    <illumination_mode>FLOOD BEAM</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>TUNGSTEN HAIRPIN</electron_source>
                    <acceleration_voltage units="kV">80</acceleration_voltage>
                    <nominal_cs units="mm">2</nominal_cs>
                    <nominal_defocus_min units="&#181;m">0.5</nominal_defocus_min>
                    <nominal_defocus_max units="&#181;m">4.9</nominal_defocus_max>
                    <nominal_magnification>36000.0</nominal_magnification>
                    <calibrated_magnification>36300.0</calibrated_magnification>
                    <specimen_holder_model>GATAN LIQUID NITROGEN</specimen_holder_model>
                    <image_recording_list>
                        <image_recording>
                            <film_or_detector_model category="FILM">KODAK SO-163 FILM</film_or_detector_model>
                            <digitization_details>
                                <scanner>NIKON SUPER COOLSCAN 9000</scanner>
                                <sampling_interval units="&#181;m">1.75</sampling_interval>
                            </digitization_details>
                            <number_real_images>10</number_real_images>
                            <average_electron_dose_per_image units="e/&#8491;^2">11.5</average_electron_dose_per_image>
                            <details>Micrographs digitized in positive contrast mode.</details>
                            <bits_per_pixel>16.</bits_per_pixel>
                        </image_recording>
                    </image_recording_list>
                    <specimen_holder>Side entry liquid nitrogen-cooled cryo specimen holder</specimen_holder>
                </single_particle_microscopy>
            </microscopy_list>
            <singleparticle_processing image_processing_id="1">
                <details>Particles were selected using X3DPREPROCESS.</details>
                <ctf_correction>
                    <details>each micrograph</details>
                </ctf_correction>
                <final_reconstruction>
                    <algorithm>OTHER</algorithm>
                    <resolution res_type="BY AUTHOR" units="&#8491;">23.0</resolution>
                    <resolution_method>FSC 0.33 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>PFT3DR</name>
                        </software>
                    </software_list>
                    <number_images_used>1155</number_images_used>
                </final_reconstruction>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="149504">
        <file>emd_5187.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>337</col>
            <row>337</row>
            <sec>337</sec>
        </dimensions>
        <origin>
            <col>-168</col>
            <row>-168</row>
            <sec>-168</sec>
        </origin>
        <spacing>
            <x>337</x>
            <y>337</y>
            <z>337</z>
        </spacing>
        <cell>
            <a units="&#8491;">593.25</a>
            <b units="&#8491;">593.25</b>
            <c units="&#8491;">593.25</c>
            <alpha units="deg">90</alpha>
            <beta units="deg">90</beta>
            <gamma units="deg">90</gamma>
        </cell>
        <axis_order>
            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
        </axis_order>
        <statistics>
            <minimum>-43.647500000000001</minimum>
            <maximum>306.353999999999985</maximum>
            <average>56.966200000000001</average>
            <std>93.676100000000005</std>
        </statistics>
        <pixel_spacing>
            <x units="&#8491;">1.75</x>
            <y units="&#8491;">1.75</y>
            <z units="&#8491;">1.75</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>151.0</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <annotation_details>cryo-EM based reconstruction of SV40 virions</annotation_details>
        <details>::::EMDATABANK.org::::EMD-5187::::</details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>1SVA</access_code>
                </initial_model>
                <refinement_protocol>RIGID BODY FIT</refinement_protocol>
                <software_list>
                    <software>
                        <name>UCSF Chimera</name>
                    </software>
                </software_list>
                <details>Protocol: Rigid Body</details>
                <target_criteria>R-factor</target_criteria>
                <refinement_space>REAL</refinement_space>
            </modelling>
        </modelling_list>
    </interpretation>
</emd>