<emd emdb_id="EMD-5210" 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>2010-07-07</deposition>
            <header_release>2010-07-16</header_release>
            <map_release>2010-09-09</map_release>
            <update>2012-04-02</update>
        </key_dates>
        <title>The structure of the recombinant alphavirus, Western equine encephalitis virus, revealed by cryoelectron microscopy</title>
        <authors_list>
            <author>Sherman MB</author>
            <author>Weaver SC</author>
        </authors_list>
        <keywords>alphavirus, cryoEM, structure, 3D reconstruction</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Sherman MB</author>
                    <author order="2">Weaver SC</author>
                    <title>Structure of the recombinant alphavirus Western equine encephalitis virus revealed by cryoelectron microscopy.</title>
                    <journal>J.VIROL.</journal>
                    <volume>84</volume>
                    <first_page>9775</first_page>
                    <last_page>9782</last_page>
                    <year>2010</year>
                    <external_references type="PUBMED">20631130</external_references>
                    <external_references type="DOI">doi:10.1128/JVI.00876-10</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
    </crossreferences>
    <sample>
        <name>Western equine encephalitis virus</name>
        <supramolecule_list>
            <sample_supramolecule supramolecule_id="1000">
                <name>Western equine encephalitis virus</name>
                <oligomeric_state>80 trimers of E1-E2 glycoproteins, 240 copies of capsid protein, vRNA</oligomeric_state>
                <number_unique_components>4</number_unique_components>
            </sample_supramolecule>
            <virus_supramolecule supramolecule_id="1">
                <name synonym="WEEV">Western equine encephalomyelitis virus</name>
                <sci_species_name ncbi="11039">Western equine encephalomyelitis virus</sci_species_name>
                <natural_host database="NCBI">
                    <organism ncbi="9796">Equus caballus</organism>
                    <synonym_organism>VERTEBRATES</synonym_organism>
                </natural_host>
                <host_system database="NCBI" />
                <molecular_weight>
                    <experimental units="MDa">52</experimental>
                    <theoretical units="MDa">52</theoretical>
                </molecular_weight>
                <virus_shell shell_id="1">
                    <triangulation>4</triangulation>
                </virus_shell>
                <virus_type>VIRION</virus_type>
                <virus_isolate>SPECIES</virus_isolate>
                <virus_enveloped>true</virus_enveloped>
                <virus_empty>false</virus_empty>
                <syn_species_name>WEEV</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>
                        <details>TEN buffer: 0.05 M Tris-HCl, pH 7.4, 0.1 M NaCl, 0.001 M EDTA</details>
                    </buffer>
                    <grid>
                        <details>R2/2 Quantifoil grids, C-flat grids</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">80</chamber_temperature>
                        <instrument>HOMEMADE PLUNGER</instrument>
                        <details>Vitrification instrument: manual plunger</details>
                        <method>Blot for 2s</method>
                    </vitrification>
                </single_particle_preparation>
                <single_particle_preparation preparation_id="2">
                    <buffer>
                        <ph>7.4</ph>
                        <details>TEN buffer: 0.05 M Tris-HCl, pH 7.4, 0.1 M NaCl, 0.001 M EDTA</details>
                    </buffer>
                    <grid>
                        <details>R2/2 Quantifoil grids, C-flat grids</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">80</chamber_temperature>
                        <instrument>HOMEMADE PLUNGER</instrument>
                        <details>Vitrification instrument: manual plunger</details>
                        <method>Blot for 2s</method>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>JEOL 2200FS</microscope>
                    <illumination_mode>FLOOD BEAM</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">200</acceleration_voltage>
                    <nominal_cs units="mm">2.0</nominal_cs>
                    <nominal_defocus_min units="&#181;m">0.4</nominal_defocus_min>
                    <nominal_defocus_max units="&#181;m">1.85</nominal_defocus_max>
                    <nominal_magnification>50000.0</nominal_magnification>
                    <calibrated_magnification>51200.0</calibrated_magnification>
                    <specimen_holder_model>GATAN LIQUID NITROGEN</specimen_holder_model>
                    <temperature>
                        <temperature_min units="K">89</temperature_min>
                        <temperature_max units="K">95</temperature_max>
                        <temperature_average units="K">90</temperature_average>
                    </temperature>
                    <alignment_procedure>
                        <legacy>
                            <astigmatism>300,000x magnification</astigmatism>
                            <electron_beam_tilt_params>0</electron_beam_tilt_params>
                        </legacy>
                    </alignment_procedure>
                    <specialist_optics>
                        <energy_filter>
                            <name>omega</name>
                            <lower_energy_threshold units="eV">0.0</lower_energy_threshold>
                            <upper_energy_threshold units="eV">20.0</upper_energy_threshold>
                        </energy_filter>
                    </specialist_optics>
                    <date>2007-11-15</date>
                    <image_recording_list>
                        <image_recording>
                            <film_or_detector_model category="FILM">GENERIC CCD</film_or_detector_model>
                            <digitization_details>
                                <scanner>NIKON SUPER COOLSCAN 9000</scanner>
                                <sampling_interval units="&#181;m">2.1</sampling_interval>
                            </digitization_details>
                            <number_real_images>49</number_real_images>
                            <average_electron_dose_per_image units="e/&#8491;^2">20</average_electron_dose_per_image>
                            <od_range>0.9</od_range>
                            <bits_per_pixel>16.</bits_per_pixel>
                        </image_recording>
                    </image_recording_list>
                    <specimen_holder>Eucentric, side entry Gatan 626</specimen_holder>
                </single_particle_microscopy>
            </microscopy_list>
            <singleparticle_processing image_processing_id="1">
                <ctf_correction>
                    <details>Each particle</details>
                </ctf_correction>
                <final_reconstruction>
                    <algorithm>OTHER</algorithm>
                    <resolution res_type="BY AUTHOR" units="&#8491;">12.0</resolution>
                    <resolution_method>FSC 0.5 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>PIF</name>
                        </software>
                    </software_list>
                    <number_images_used>4586</number_images_used>
                </final_reconstruction>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="183775">
        <file>emd_5210.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>361</col>
            <row>361</row>
            <sec>361</sec>
        </dimensions>
        <origin>
            <col>-180</col>
            <row>-180</row>
            <sec>-180</sec>
        </origin>
        <spacing>
            <x>361</x>
            <y>361</y>
            <z>361</z>
        </spacing>
        <cell>
            <a units="&#8491;">830.3</a>
            <b units="&#8491;">830.3</b>
            <c units="&#8491;">830.3</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>-298.084136960000023</minimum>
            <maximum>340.75912476000002</maximum>
            <average>9.37805367</average>
            <std>57.561008450000003</std>
        </statistics>
        <pixel_spacing>
            <x units="&#8491;">2.3</x>
            <y units="&#8491;">2.3</y>
            <z units="&#8491;">2.3</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>80.0</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <annotation_details>This is a 3D map of Western equine encephalitis virus</annotation_details>
        <details>::::EMDATABANK.org::::EMD-5210::::</details>
    </map>
</emd>