<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" emdb_id="EMD-1220" version="3.0.1.1" 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>PDBe</processing_site>
      </current_status>
      <sites>
         <deposition>PDBe</deposition>
         <last_processing>PDBe</last_processing>
      </sites>
      <key_dates>
         <deposition>2006-05-04</deposition>
         <header_release>2006-05-05</header_release>
         <map_release>2006-06-03</map_release>
         <update>2011-05-26</update>
      </key_dates>
      <title>The structure of an infectious P22 virion shows the signal for headful DNA packaging.</title>
      <authors_list>
         <author>Lander GC</author>
         <author>Tang L</author>
         <author>Casjens SR</author>
         <author>Gilcrease EB</author>
         <author>Prevelige P</author>
         <author>Poliakov A</author>
         <author>Potter CS</author>
         <author>Carragher B</author>
         <author>Johnson JE</author>
      </authors_list>
      <keywords>
         </keywords>
   </admin>
   <crossreferences>
      <citation_list>
         <primary_citation>
            <journal_citation published="true">
               <author order="1">Lander GC</author>
               <author order="2">Tang L</author>
               <author order="3">Casjens SR</author>
               <author order="4">Gilcrease EB</author>
               <author order="5">Prevelige P</author>
               <author order="6">Poliakov A</author>
               <author order="7">Potter CS</author>
               <author order="8">Carragher B</author>
               <author order="9">Johnson JE</author>
               <title>The structure of an infectious P22 virion shows the signal for headful DNA packaging.</title>
               <journal>SCIENCE</journal>
               <volume>312</volume>
               <first_page>1791</first_page>
               <last_page>1795</last_page>
               <year>2006</year>
               <external_references type="PUBMED">16709746</external_references>
               <external_references type="DOI">doi:10.1126/science.1127981</external_references>
            </journal_citation>
         </primary_citation>
      </citation_list>
   </crossreferences>
   <sample>
      <name>P22 Bacteriophage Virion</name>
      <supramolecule_list>
         <sample_supramolecule supramolecule_id="1000">
            <name>P22 Bacteriophage Virion</name>
            <number_unique_components>1</number_unique_components>
         </sample_supramolecule>
         <virus_supramolecule supramolecule_id="1">
            <name>Enterobacteria phage P22</name>
            <sci_species_name ncbi="10754">Enterobacteria phage P22</sci_species_name>
            <natural_host database="NCBI">
               <organism ncbi="28901">Salmonella enterica</organism>
               <synonym_organism>BACTERIA(EUBACTERIA)</synonym_organism>
            </natural_host>
            <host_system database="NCBI">
               </host_system>
            <virus_shell shell_id="1">
               <name>gp5</name>
               <diameter units="&#8491;">600</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>
         </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">
               <concentration units="mg/mL">10</concentration>
               <buffer>
                  <ph>7.4</ph>
                  <details>10mM Tris-HCL, 1mM MgCl2</details>
               </buffer>
               <grid>
                  <details>Quantifoil 2/2 400  mesh grid</details>
               </grid>
               <vitrification>
                  <cryogen_name>ETHANE</cryogen_name>
                  <chamber_humidity units="percentage">100</chamber_humidity>
                  <chamber_temperature units="K">4.2</chamber_temperature>
                  <instrument>OTHER</instrument>
                  <details>Vitrification instrument: FEI Vitrobot</details>
                  <method>Blot for 4 seconds before plunging</method>
               </vitrification>
            </single_particle_preparation>
         </specimen_preparation_list>
         <microscopy_list>
            <single_particle_microscopy microscopy_id="1">
               <microscope>FEI TECNAI F20</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</nominal_cs>
               <nominal_defocus_min units="&#181;m">0.5</nominal_defocus_min>
               <nominal_defocus_max units="&#181;m">4.5</nominal_defocus_max>
               <nominal_magnification>80000.0</nominal_magnification>
               <calibrated_magnification>80000.0</calibrated_magnification>
               <specimen_holder_model>GATAN LIQUID NITROGEN</specimen_holder_model>
               <temperature>
                  <temperature_min units="K">4.5</temperature_min>
                  <temperature_max units="K">4.8</temperature_max>
                  <temperature_average units="K">4.5</temperature_average>
               </temperature>
               <alignment_procedure>
                  <legacy>
                     <astigmatism>Objective lens astigmatism was corrected
        automatically       at 50,000 times magnification</astigmatism>
                  </legacy>
               </alignment_procedure>
               <specialist_optics>
                  <energy_filter>
                     <name>FEI</name>
                     <lower_energy_threshold units="eV">0.0</lower_energy_threshold>
                     <upper_energy_threshold units="eV">25.0</upper_energy_threshold>
                  </energy_filter>
               </specialist_optics>
               <details>images collected automatically with LEGINON</details>
               <image_recording_list>
                  <image_recording>
                     <film_or_detector_model category="CCD">GENERIC TVIPS</film_or_detector_model>
                     <number_real_images>4899</number_real_images>
                     <average_electron_dose_per_image units="e/&#8491;^2">20</average_electron_dose_per_image>
                  </image_recording>
               </image_recording_list>
               <specimen_holder>Eucentric</specimen_holder>
            </single_particle_microscopy>
         </microscopy_list>
         <singleparticle_processing image_processing_id="1">
            <details>Particles selected manually, CTF estimation was
          performed       using Automated CTF-Estimation Matlab package (ACE)</details>
            <ctf_correction>
               <details>Each micrograph</details>
            </ctf_correction>
            <final_reconstruction>
               <applied_symmetry>
                  <point_group>C1</point_group>
               </applied_symmetry>
               <algorithm>OTHER</algorithm>
               <resolution res_type="BY AUTHOR" units="&#8491;">17.0</resolution>
               <resolution_method>FSC 0.5 CUT-OFF</resolution_method>
               <software_list>
                  <software>
                     <name>SPIDER, EMAN</name>
                  </software>
               </software_list>
               <number_images_used>22968</number_images_used>
            </final_reconstruction>
         </singleparticle_processing>
      </structure_determination>
   </structure_determination_list>
   <map format="CCP4" size_kbytes="65537">
      <file>emd_1220.map.gz</file>
      <symmetry>
         <space_group>1</space_group>
      </symmetry>
      <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
      <dimensions>
         <col>256</col>
         <row>256</row>
         <sec>256</sec>
      </dimensions>
      <origin>
         <col>-128</col>
         <row>-128</row>
         <sec>-128</sec>
      </origin>
      <spacing>
         <x>256</x>
         <y>256</y>
         <z>256</z>
      </spacing>
      <cell>
         <a units="&#8491;">1034.24</a>
         <b units="&#8491;">1034.24</b>
         <c units="&#8491;">1034.24</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>-10.205500000000001</minimum>
         <maximum>13.7524</maximum>
         <average>0.00943773</average>
         <std>1.0</std>
      </statistics>
      <pixel_spacing>
         <x units="&#8491;">4.04</x>
         <y units="&#8491;">4.04</y>
         <z units="&#8491;">4.04</z>
      </pixel_spacing>
      <contour_list>
         <contour primary="true">
            <level>0.981</level>
         </contour>
      </contour_list>
      <annotation_details>Surface rendered view of the asymmetric P22 Virion</annotation_details>
      <details>::::EMDATABANK.org::::EMD-1220::::</details>
   </map>
</emd>