<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" emdb_id="EMD-2439" 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>2013-08-13</deposition>
         <header_release>2013-09-11</header_release>
         <map_release>2013-10-02</map_release>
         <update>2013-10-16</update>
      </key_dates>
      <title>Mechanism of Membranous Tunnelling Nanotube Formation in Viral Genome Delivery</title>
      <authors_list>
         <author>Peralta B</author>
         <author>Gil-Carton D</author>
         <author>Castano-Diez D</author>
         <author>Bertin A</author>
         <author>Boulogne C</author>
         <author>Oksanen HM</author>
         <author>Bamford DH</author>
         <author>Abrescia NGA</author>
      </authors_list>
      <keywords>virus, structural virology, viral genome delivery, proteo-lipidic structures, membrane remodelling, nanotube formation, single-particle tomography, cellular tomography</keywords>
   </admin>
   <crossreferences>
      <citation_list>
         <primary_citation>
            <journal_citation published="true">
               <author order="1">Peralta B</author>
               <author order="2">Gil-Carton D</author>
               <author order="3">Castano-Diez D</author>
               <author order="4">Bertin A</author>
               <author order="5">Boulogne C</author>
               <author order="6">Oksanen HM</author>
               <author order="7">Bamford DH</author>
               <author order="8">Abrescia NGA</author>
               <title>Mechanism of membranous tunnelling nanotube formation in viral genome delivery.</title>
               <journal>PLOS BIOL.</journal>
               <volume>11</volume>
               <first_page>e1001667</first_page>
               <last_page>e1001667</last_page>
               <year>2013</year>
               <external_references type="PUBMED">24086111</external_references>
               <external_references type="DOI">doi:10.1371/journal.pbio.1001667</external_references>
            </journal_citation>
         </primary_citation>
         <secondary_citation>
            <journal_citation published="true">
               <author order="1">Abrescia NG</author>
               <author order="2">Cockburn JJ</author>
               <author order="3">Grimes JM</author>
               <author order="4">Sutton GC</author>
               <author order="5">Diprose JM</author>
               <author order="6">Butcher SJ</author>
               <author order="7">Fuller SD</author>
               <author order="8">SanMartin C</author>
               <author order="9">Burnett RM</author>
               <author order="10">Stuart DI</author>
               <author order="11">Bamford DH</author>
               <author order="12">Bamford JK</author>
               <title>Insights into assembly from structural analysis of bacteriophage PRD1</title>
               <journal>NATURE</journal>
               <volume>432</volume>
               <first_page>68</first_page>
               <last_page>74</last_page>
               <year>2004</year>
               <external_references type="PUBMED">15525981</external_references>
               <external_references type="DOI">doi:10.1038/nature03056</external_references>
            </journal_citation>
         </secondary_citation>
         <secondary_citation>
            <journal_citation published="true">
               <author order="1">Cockburn JJ</author>
               <author order="2">Abrescia NG</author>
               <author order="3">Grimes JM</author>
               <author order="4">Sutton GC</author>
               <author order="5">Diprose JM</author>
               <author order="6">Benevides JM</author>
               <author order="7">Thomas GJ</author>
               <author order="8">Bamford JK</author>
               <author order="9">Bamford DH</author>
               <author order="10">Stuart DI</author>
               <title>Membrane structure and interactions with protein and DNA in bacteriophage PRD1.</title>
               <journal>NATURE</journal>
               <volume>432</volume>
               <first_page>122</first_page>
               <last_page>125</last_page>
               <year>2004</year>
               <external_references type="PUBMED">15525993</external_references>
               <external_references type="DOI">doi:10.1038/nature03053</external_references>
            </journal_citation>
         </secondary_citation>
      </citation_list>
   </crossreferences>
   <sample>
      <name>Protruding tube (average class 2) from the lipid-containing bacteriophage PRD1</name>
      <supramolecule_list>
         <sample_supramolecule supramolecule_id="1000">
            <name>Protruding tube (average class 2) from the lipid-containing bacteriophage PRD1</name>
            <number_unique_components>1</number_unique_components>
         </sample_supramolecule>
         <virus_supramolecule supramolecule_id="1">
            <name synonym="bacteriophage PRD1">Enterobacteria phage PRD1</name>
            <details>This is the self-assembling proteo-lipid tube.
Infects both Escherichia coli and Salmonella enterica</details>
            <sci_species_name ncbi="10658">Enterobacteria phage PRD1</sci_species_name>
            <natural_host database="NCBI">
               <organism ncbi="562">Escherichia coli</organism>
               <synonym_organism>BACTERIA(EUBACTERIA)</synonym_organism>
            </natural_host>
            <host_system database="NCBI">
               </host_system>
            <molecular_weight>
               <theoretical units="MDa">70</theoretical>
            </molecular_weight>
            <virus_shell shell_id="1">
               <name>P3</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>bacteriophage PRD1</syn_species_name>
         </virus_supramolecule>
      </supramolecule_list>
   </sample>
   <structure_determination_list>
      <structure_determination structure_determination_id="1">
         <method>subtomogramAveraging</method>
         <aggregation_state>particle</aggregation_state>
         <specimen_preparation_list>
            <subtomogram_averaging_preparation preparation_id="1">
               <concentration units="mg/mL">0.6</concentration>
               <buffer>
                  <ph>7.2</ph>
                  <details>20 mM Phosphate Buffer
1 mM MgCl2</details>
               </buffer>
               <grid>
                  <details>200 mesh QUANTIFOIL R 2/1 (or R 3.5/1) copper grid, glow discharged in air atmosphere</details>
               </grid>
               <vitrification>
                  <cryogen_name>ETHANE</cryogen_name>
                  <chamber_humidity units="percentage">95</chamber_humidity>
                  <chamber_temperature units="K">120</chamber_temperature>
                  <instrument>FEI VITROBOT MARK III</instrument>
                  <method>Blot for 4 seconds before plunging</method>
               </vitrification>
            </subtomogram_averaging_preparation>
         </specimen_preparation_list>
         <microscopy_list>
            <subtomogram_averaging_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</nominal_cs>
               <nominal_defocus_min units="&#181;m">5.0</nominal_defocus_min>
               <nominal_defocus_max units="&#181;m">8.0</nominal_defocus_max>
               <nominal_magnification>25000.0</nominal_magnification>
               <calibrated_magnification>34138.0</calibrated_magnification>
               <specimen_holder_model>GATAN LIQUID NITROGEN</specimen_holder_model>
               <temperature>
                  <temperature_min units="K">80</temperature_min>
                  <temperature_max units="K">105</temperature_max>
                  <temperature_average units="K">99</temperature_average>
               </temperature>
               <alignment_procedure>
                  <legacy>
                     <astigmatism>Objective lens astigmatism was corrected at 120,000 times magnification</astigmatism>
                  </legacy>
               </alignment_procedure>
               <specialist_optics>
                  <energy_filter>
                     <name>In-column Omega filter</name>
                     <lower_energy_threshold units="eV">10.0</lower_energy_threshold>
                     <upper_energy_threshold units="eV">30.0</upper_energy_threshold>
                  </energy_filter>
               </specialist_optics>
               <date>2012-01-04</date>
               <image_recording_list>
                  <image_recording>
                     <film_or_detector_model category="FILM">GATAN ULTRASCAN 4000 (4k x 4k)</film_or_detector_model>
                     <digitization_details>
                        <scanner>OTHER</scanner>
                     </digitization_details>
                     <average_electron_dose_per_image units="e/&#8491;^2">100</average_electron_dose_per_image>
                     <bits_per_pixel>16.</bits_per_pixel>
                  </image_recording>
               </image_recording_list>
               <tilt_series>
                  <axis1>
                     <min_angle units="deg">-64</min_angle>
                     <max_angle units="deg">64</max_angle>
                  </axis1>
               </tilt_series>
            </subtomogram_averaging_microscopy>
         </microscopy_list>
         <subtomogram_averaging_processing image_processing_id="1">
            <details>This class 2 is one of the 4 classes used during multi-reference alignment. Please see details in primary reference.</details>
            <final_reconstruction>
               <applied_symmetry>
                  <point_group>C1</point_group>
               </applied_symmetry>
               <algorithm>OTHER</algorithm>
               <resolution res_type="BY AUTHOR" units="&#8491;">66.0</resolution>
               <resolution_method>FSC 0.5 CUT-OFF</resolution_method>
               <software_list>
                  <software>
                     <name>IMOD, Dynamo</name>
                  </software>
               </software_list>
               <number_subtomograms_used>33</number_subtomograms_used>
            </final_reconstruction>
         </subtomogram_averaging_processing>
      </structure_determination>
   </structure_determination_list>
   <map format="CCP4" size_kbytes="433">
      <file>emd_2439.map.gz</file>
      <symmetry>
         <space_group>1</space_group>
      </symmetry>
      <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
      <dimensions>
         <col>48</col>
         <row>48</row>
         <sec>48</sec>
      </dimensions>
      <origin>
         <col>0</col>
         <row>0</row>
         <sec>0</sec>
      </origin>
      <spacing>
         <x>48</x>
         <y>48</y>
         <z>48</z>
      </spacing>
      <cell>
         <a units="&#8491;">422.40002</a>
         <b units="&#8491;">422.40002</b>
         <c units="&#8491;">422.40002</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>-2.89702868</minimum>
         <maximum>3.44850159</maximum>
         <average>-0.17037711</average>
         <std>0.53865904</std>
      </statistics>
      <pixel_spacing>
         <x units="&#8491;">8.8</x>
         <y units="&#8491;">8.8</y>
         <z units="&#8491;">8.8</z>
      </pixel_spacing>
      <contour_list>
         <contour primary="true">
            <level>0.8</level>
            <source>AUTHOR</source>
         </contour>
      </contour_list>
      <annotation_details>This sub-tomogram averaged tube density refers to the average class-2.
Before displaying it's better to apply a low-pass filter to 50 Ang and contour at 0.8sigma (where sigma is defined by the threshold level displayed by Chimera over the RMS of the map).</annotation_details>
      <details>::::EMDATABANK.org::::EMD-2439::::</details>
   </map>
</emd>