<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" emdb_id="EMD-1075" 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>2004-03-23</deposition>
         <header_release>2004-03-29</header_release>
         <map_release>2004-03-29</map_release>
         <update>2011-05-26</update>
      </key_dates>
      <title>Molecular architecture of the prolate head of bacteriophage T4.</title>
      <authors_list>
         <author>Fokine A</author>
         <author>Chipman PR</author>
         <author>Leiman PG</author>
         <author>Mesyanzhinov VV</author>
         <author>Rao VB</author>
         <author>Rossmann MG</author>
      </authors_list>
      <keywords>
         </keywords>
   </admin>
   <crossreferences>
      <citation_list>
         <primary_citation>
            <journal_citation published="true">
               <author order="1">Fokine A</author>
               <author order="2">Chipman PR</author>
               <author order="3">Leiman PG</author>
               <author order="4">Mesyanzhinov VV</author>
               <author order="5">Rao VB</author>
               <author order="6">Rossmann MG</author>
               <title>Molecular architecture of the prolate head of bacteriophage T4.</title>
               <journal>PROC.NAT.ACAD.SCI.USA</journal>
               <volume>101</volume>
               <first_page>6003</first_page>
               <last_page>6008</last_page>
               <year>2004</year>
               <external_references type="PUBMED">15071181</external_references>
               <external_references type="DOI">doi:10.1073/pnas.0400444101</external_references>
            </journal_citation>
         </primary_citation>
      </citation_list>
   </crossreferences>
   <sample>
      <name>bacteriophage T4 prolate head</name>
      <supramolecule_list>
         <sample_supramolecule supramolecule_id="1000">
            <name>bacteriophage T4 prolate head</name>
            <details>Sample was the native bacteriophage T4. Only the head part
      of the phage was reconstructed.</details>
            <number_unique_components>1</number_unique_components>
            <molecular_weight>
               <experimental units="MDa">194</experimental>
               <method>STEM,  194 MDa is the mass of the DNA filled head.</method>
            </molecular_weight>
         </sample_supramolecule>
         <virus_supramolecule supramolecule_id="1">
            <name synonym="phage T4">Enterobacteria phage T4</name>
            <sci_species_name ncbi="10665">Enterobacteria phage T4</sci_species_name>
            <natural_host database="NCBI">
               <organism>Ecoli</organism>
               <synonym_organism>BACTERIA(EUBACTERIA)</synonym_organism>
            </natural_host>
            <host_system database="NCBI">
               </host_system>
            <molecular_weight>
               <theoretical units="MDa">194</theoretical>
            </molecular_weight>
            <virus_shell shell_id="1">
               <name>capsid width is 860 A, length is 1195 A</name>
            </virus_shell>
            <virus_shell shell_id="2">
               <name>Tmid=20; Tend=13</name>
            </virus_shell>
            <virus_type>VIRION</virus_type>
            <virus_isolate>SPECIES</virus_isolate>
            <virus_enveloped>false</virus_enveloped>
            <virus_empty>false</virus_empty>
            <syn_species_name>phage T4</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>6.2</ph>
                  <details>Distilled water.  The concentration of the virus
          particles       was 10E11 particles pre ml.</details>
               </buffer>
               <grid>
                  <details>quantifoil copper grid 2um holes</details>
               </grid>
               <vitrification>
                  <cryogen_name>ETHANE</cryogen_name>
                  <chamber_temperature units="K">90</chamber_temperature>
                  <instrument>HOMEMADE PLUNGER</instrument>
                  <details>Vitrification instrument: in-house, gravity driven plunger</details>
                  <method>3.5ul of sample  hand blotted approx. 1sec</method>
               </vitrification>
            </single_particle_preparation>
         </specimen_preparation_list>
         <microscopy_list>
            <single_particle_microscopy microscopy_id="1">
               <microscope>FEI/PHILIPS CM300FEG/T</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>
               <nominal_cs units="mm">2.0</nominal_cs>
               <nominal_defocus_min units="&#181;m">1.1</nominal_defocus_min>
               <nominal_defocus_max units="&#181;m">2.7</nominal_defocus_max>
               <nominal_magnification>45000.0</nominal_magnification>
               <calibrated_magnification>47000.0</calibrated_magnification>
               <specimen_holder_model>GATAN LIQUID NITROGEN</specimen_holder_model>
               <temperature>
                  <temperature_average units="K">97</temperature_average>
               </temperature>
               <alignment_procedure>
                  <legacy>
                     <astigmatism>live fft at 190,000x</astigmatism>
                  </legacy>
               </alignment_procedure>
               <image_recording_list>
                  <image_recording>
                     <film_or_detector_model category="FILM">KODAK SO-163 FILM</film_or_detector_model>
                     <digitization_details>
                        <scanner>ZEISS SCAI</scanner>
                        <sampling_interval units="&#181;m">7</sampling_interval>
                     </digitization_details>
                     <number_real_images>55</number_real_images>
                     <average_electron_dose_per_image units="e/&#8491;^2">29</average_electron_dose_per_image>
                     <bits_per_pixel>8.</bits_per_pixel>
                  </image_recording>
               </image_recording_list>
               <specimen_holder>na</specimen_holder>
            </single_particle_microscopy>
         </microscopy_list>
         <singleparticle_processing image_processing_id="1">
            <ctf_correction>
               <details>Each particle</details>
            </ctf_correction>
            <final_reconstruction>
               <applied_symmetry>
                  <point_group>C5</point_group>
               </applied_symmetry>
               <algorithm>OTHER</algorithm>
               <resolution res_type="BY AUTHOR" units="&#8491;">22.5</resolution>
               <resolution_method>FSC 0.33 CUT-OFF</resolution_method>
               <software_list>
                  <software>
                     <name>SPIDER</name>
                  </software>
               </software_list>
               <details>The reconstruction was performed by imposing 5-fold
        symmetry averaging. The 5-fold axis is along Z.</details>
               <number_images_used>5140</number_images_used>
            </final_reconstruction>
            <final_angle_assignment>
               <details>The reconstruction was made in SPIDER using
        the       projection matching protocol. The reference
        projections were       calculated in the interval theta: 0-90
        degrees, phi: 0-72 degrees.</details>
            </final_angle_assignment>
         </singleparticle_processing>
      </structure_determination>
   </structure_determination_list>
   <map format="CCP4" size_kbytes="28712">
      <file>emd_1075.map.gz</file>
      <symmetry>
         <space_group>1</space_group>
      </symmetry>
      <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
      <dimensions>
         <col>175</col>
         <row>175</row>
         <sec>240</sec>
      </dimensions>
      <origin>
         <col>0</col>
         <row>0</row>
         <sec>0</sec>
      </origin>
      <spacing>
         <x>175</x>
         <y>175</y>
         <z>240</z>
      </spacing>
      <cell>
         <a units="&#8491;">1043</a>
         <b units="&#8491;">1043</b>
         <c units="&#8491;">1430.4</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>-0.157651</minimum>
         <maximum>0.263553</maximum>
         <average>0.0133426</average>
         <std>0.0458542</std>
      </statistics>
      <pixel_spacing>
         <x units="&#8491;">5.96</x>
         <y units="&#8491;">5.96</y>
         <z units="&#8491;">5.96</z>
      </pixel_spacing>
      <contour_list>
         <contour primary="true">
            <level>0.0864</level>
         </contour>
      </contour_list>
      <annotation_details>cryoEM reconstruction of the bacteriophage T4 head</annotation_details>
      <details>::::EMDATABANK.org::::EMD-1075::::</details>
   </map>
   <interpretation>
      <modelling_list>
         <modelling>
            <details>Nothing to fit</details>
         </modelling>
      </modelling_list>
      <figure_list>
         <figure>
            <file>emd_2431.tif</file>
         </figure>
      </figure_list>
   </interpretation>
</emd>