<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" emdb_id="EMD-2429" 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>2013-07-26</deposition>
         <header_release>2013-08-07</header_release>
         <map_release>2013-09-18</map_release>
         <update>2013-10-09</update>
      </key_dates>
      <title>The structure of the COPII coat assembled on membranes</title>
      <authors_list>
         <author>Zanetti G</author>
         <author>Prinz S</author>
         <author>Daum S</author>
         <author>Meister A</author>
         <author>Schekman R</author>
         <author>Bacia K</author>
         <author>Briggs JAG</author>
      </authors_list>
      <keywords>COPII, coat, secretion, trafficking, Sec13, Sec31</keywords>
   </admin>
   <crossreferences>
      <citation_list>
         <primary_citation>
            <journal_citation published="true">
               <author order="1">Zanetti G</author>
               <author order="2">Prinz S</author>
               <author order="3">Daum S</author>
               <author order="4">Meister A</author>
               <author order="5">Schekman R</author>
               <author order="6">Bacia K</author>
               <author order="7">Briggs JA</author>
               <title>The structure of the COPII transport-vesicle coat assembled on membranes.</title>
               <journal>ELIFE</journal>
               <volume>2</volume>
               <first_page>e00951</first_page>
               <last_page>e00951</last_page>
               <year>2013</year>
               <external_references type="PUBMED">24062940</external_references>
               <external_references type="DOI">doi:10.7554/eLife.00951</external_references>
            </journal_citation>
         </primary_citation>
      </citation_list>
   </crossreferences>
   <sample>
      <name>Sec13/31 complex (as part of complete COPII assembled on membrane) cage vertex</name>
      <supramolecule_list>
         <sample_supramolecule supramolecule_id="1000">
            <name>Sec13/31 complex (as part of complete COPII assembled on membrane) cage vertex</name>
            <oligomeric_state>4 heterotetramers form a vertex</oligomeric_state>
            <number_unique_components>2</number_unique_components>
            <molecular_weight>
               <experimental units="MDa">0.319236</experimental>
               <theoretical units="MDa">0.319236</theoretical>
            </molecular_weight>
         </sample_supramolecule>
      </supramolecule_list>
      <macromolecule_list>
         <protein_or_peptide macromolecule_id="1">
            <name>Sec31</name>
            <natural_source database="NCBI">
               <organism ncbi="4932">Saccharomyces cerevisiae</organism>
               <synonym_organism>Baker's yeast</synonym_organism>
               <cellular_location>cytosol/endoplasmic reticulum</cellular_location>
            </natural_source>
            <molecular_weight>
               <experimental units="MDa">0.138824</experimental>
               <theoretical units="MDa">0.138824</theoretical>
            </molecular_weight>
            <number_of_copies>4</number_of_copies>
            <oligomeric_state>heterotetramer</oligomeric_state>
            <recombinant_exp_flag>true</recombinant_exp_flag>
            <recombinant_expression database="NCBI">
               <recombinant_organism ncbi="4932">Saccharomyces cerevisiae</recombinant_organism>
               <recombinant_strain>RSY1112</recombinant_strain>
               <recombinant_plasmid>pNS3141 (6H31/CK1313)</recombinant_plasmid>
            </recombinant_expression>
            <sequence>
               <external_references type="UNIPROTKB">E7Q1I6</external_references>
            </sequence>
         </protein_or_peptide>
         <protein_or_peptide macromolecule_id="2">
            <name>Sec13</name>
            <natural_source database="NCBI">
               <organism ncbi="4932">Saccharomyces cerevisiae</organism>
               <synonym_organism>Baker's yeast</synonym_organism>
               <cellular_location>cytosol/endoplasmic reticulum</cellular_location>
            </natural_source>
            <molecular_weight>
               <experimental units="MDa">0.02079</experimental>
               <theoretical units="MDa">0.0279</theoretical>
            </molecular_weight>
            <number_of_copies>4</number_of_copies>
            <oligomeric_state>heterotetramer</oligomeric_state>
            <recombinant_exp_flag>true</recombinant_exp_flag>
            <recombinant_expression database="NCBI">
               <recombinant_organism ncbi="4932">Saccharomyces cerevisiae</recombinant_organism>
               <recombinant_strain>RSY1112</recombinant_strain>
               <recombinant_plasmid>pNS3141 (6H31/CK1313)</recombinant_plasmid>
            </recombinant_expression>
            <sequence>
               <external_references type="UNIPROTKB">E7Q6Z3</external_references>
            </sequence>
         </protein_or_peptide>
      </macromolecule_list>
   </sample>
   <structure_determination_list>
      <structure_determination structure_determination_id="1">
         <method>subtomogramAveraging</method>
         <aggregation_state>helicalArray</aggregation_state>
         <specimen_preparation_list>
            <subtomogram_averaging_preparation preparation_id="1">
               <concentration units="mg/mL">0.03</concentration>
               <buffer>
                  <ph>6.8</ph>
                  <details>HEPES, 50 mM KOAc, 1.2 mM MgCl2</details>
               </buffer>
               <staining>
                  <type>NEGATIVE</type>
                  <details>plunge frozen</details>
               </staining>
               <grid>
                  <details>C-flat grids</details>
               </grid>
               <vitrification>
                  <cryogen_name>ETHANE</cryogen_name>
                  <instrument>HOMEMADE PLUNGER</instrument>
               </vitrification>
            </subtomogram_averaging_preparation>
         </specimen_preparation_list>
         <microscopy_list>
            <subtomogram_averaging_microscopy microscopy_id="1">
               <microscope>FEI TITAN KRIOS</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">2.7</nominal_cs>
               <nominal_defocus_min units="&#181;m">2.0</nominal_defocus_min>
               <nominal_defocus_max units="&#181;m">3.2</nominal_defocus_max>
               <nominal_magnification>19500.0</nominal_magnification>
               <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
               <specialist_optics>
                  <energy_filter>
                     <name>GATAN GIF 2002</name>
                  </energy_filter>
               </specialist_optics>
               <date>2012-09-18</date>
               <image_recording_list>
                  <image_recording>
                     <film_or_detector_model category="CCD">GATAN MULTISCAN</film_or_detector_model>
                     <number_real_images>26</number_real_images>
                     <average_electron_dose_per_image units="e/&#8491;^2">80</average_electron_dose_per_image>
                     <bits_per_pixel>16.</bits_per_pixel>
                  </image_recording>
               </image_recording_list>
               <tilt_series>
                  <axis1>
                     <min_angle units="deg">-60</min_angle>
                     <max_angle units="deg">60</max_angle>
                  </axis1>
               </tilt_series>
            </subtomogram_averaging_microscopy>
            <subtomogram_averaging_microscopy microscopy_id="2">
               <microscope>FEI TITAN KRIOS</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">2.7</nominal_cs>
               <nominal_defocus_min units="&#181;m">2.0</nominal_defocus_min>
               <nominal_defocus_max units="&#181;m">3.2</nominal_defocus_max>
               <nominal_magnification>19500.0</nominal_magnification>
               <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
               <specialist_optics>
                  <energy_filter>
                     <name>GATAN GIF 2002</name>
                  </energy_filter>
               </specialist_optics>
               <date>2012-06-19</date>
               <image_recording_list>
                  <image_recording>
                     <film_or_detector_model category="CCD">GATAN MULTISCAN</film_or_detector_model>
                     <number_real_images>26</number_real_images>
                     <average_electron_dose_per_image units="e/&#8491;^2">80</average_electron_dose_per_image>
                     <bits_per_pixel>16.</bits_per_pixel>
                  </image_recording>
               </image_recording_list>
               <tilt_series>
                  <axis1>
                     <min_angle units="deg">-60</min_angle>
                     <max_angle units="deg">60</max_angle>
                  </axis1>
               </tilt_series>
            </subtomogram_averaging_microscopy>
         </microscopy_list>
         <subtomogram_averaging_processing image_processing_id="1">
            <details>see materials and methods in relevant publication</details>
            <final_reconstruction>
               <applied_symmetry>
                  <point_group>C2</point_group>
               </applied_symmetry>
               <algorithm>OTHER</algorithm>
               <resolution res_type="BY AUTHOR" units="&#8491;">40.0</resolution>
               <resolution_method>FSC 0.5 CUT-OFF</resolution_method>
               <software_list>
                  <software>
                     <name>TOM/AV3, Matlab, dynamo</name>
                  </software>
               </software_list>
               <number_subtomograms_used>417</number_subtomograms_used>
            </final_reconstruction>
            <ctf_correction>
               <details>each tilted image within tomogram</details>
            </ctf_correction>
            <final_angle_assignment>
               <details>0 0 0 in zyz convention</details>
            </final_angle_assignment>
         </subtomogram_averaging_processing>
      </structure_determination>
   </structure_determination_list>
   <map format="CCP4" size_kbytes="8193">
      <file>emd_2429.map.gz</file>
      <symmetry>
         <space_group>1</space_group>
      </symmetry>
      <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
      <dimensions>
         <col>128</col>
         <row>128</row>
         <sec>128</sec>
      </dimensions>
      <origin>
         <col>0</col>
         <row>0</row>
         <sec>0</sec>
      </origin>
      <spacing>
         <x>128</x>
         <y>128</y>
         <z>128</z>
      </spacing>
      <cell>
         <a units="&#8491;">550.4</a>
         <b units="&#8491;">550.4</b>
         <c units="&#8491;">550.4</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>-1.75932884</minimum>
         <maximum>7.09553051</maximum>
         <average>0.0</average>
         <std>0.99999976</std>
      </statistics>
      <pixel_spacing>
         <x units="&#8491;">4.3</x>
         <y units="&#8491;">4.3</y>
         <z units="&#8491;">4.3</z>
      </pixel_spacing>
      <contour_list>
         <contour primary="true">
            <level>2.5</level>
            <source>AUTHOR</source>
         </contour>
      </contour_list>
      <annotation_details>sec31/13 outer COP2 coat layer vertex</annotation_details>
      <details>::::EMDATABANK.org::::EMD-2429::::</details>
   </map>
   <interpretation>
      <figure_list>
         <figure>
            <file>emd_2429.png</file>
         </figure>
      </figure_list>
   </interpretation>
</emd>