<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" emdb_id="EMD-2026" 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>2012-01-09</deposition>
         <header_release>2012-01-20</header_release>
         <map_release>2012-04-13</map_release>
         <update>2015-08-26</update>
      </key_dates>
      <title>Structure of the proteasome subunit Rpn1</title>
      <authors_list>
         <author>He J</author>
         <author>Kulkarni K</author>
         <author>daFonseca P</author>
         <author>Krutauz D</author>
         <author>Glickman M</author>
         <author>Barford D</author>
         <author>Morris E</author>
      </authors_list>
      <keywords>proteasome,rpn1,19S subunit</keywords>
   </admin>
   <crossreferences>
      <citation_list>
         <primary_citation>
            <journal_citation published="true">
               <author order="1">He J</author>
               <author order="2">Kulkarni K</author>
               <author order="3">da Fonseca PC</author>
               <author order="4">Krutauz D</author>
               <author order="5">Glickman MH</author>
               <author order="6">Barford D</author>
               <author order="7">Morris EP</author>
               <title>Structure of the 26S Proteasome Subunit Rpn2 Reveals Its PC Repeat Domain as a Closed Toroid of Two Concentric alpha-Helical Rings.</title>
               <journal>STRUCTURE</journal>
               <volume>20</volume>
               <first_page>513</first_page>
               <last_page>521</last_page>
               <year>2012</year>
               <external_references type="PUBMED">22405010</external_references>
               <external_references type="DOI">doi:10.1016/j.str.2011.12.015</external_references>
            </journal_citation>
         </primary_citation>
      </citation_list>
   </crossreferences>
   <sample>
      <name>Rpn1</name>
      <supramolecule_list>
         <sample_supramolecule supramolecule_id="1000">
            <name>Rpn1</name>
            <number_unique_components>1</number_unique_components>
            <molecular_weight>
               <theoretical units="MDa">0.109492</theoretical>
            </molecular_weight>
         </sample_supramolecule>
      </supramolecule_list>
      <macromolecule_list>
         <protein_or_peptide macromolecule_id="1">
            <name synonym="Rpn1">Rpn1</name>
            <natural_source database="NCBI">
               <organism ncbi="4932">Saccharomyces cerevisiae</organism>
               <synonym_organism>Baker's yeast</synonym_organism>
            </natural_source>
            <molecular_weight>
               <theoretical units="MDa">0.109492</theoretical>
            </molecular_weight>
            <number_of_copies>1</number_of_copies>
            <oligomeric_state>Monomer</oligomeric_state>
            <recombinant_exp_flag>true</recombinant_exp_flag>
            <recombinant_expression database="NCBI">
               <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
            </recombinant_expression>
            <sequence>
               </sequence>
         </protein_or_peptide>
      </macromolecule_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">0.1</concentration>
               <staining>
                  <type>NEGATIVE</type>
                  <details>2% uranyl acetate</details>
               </staining>
               <grid>
                  <details>Carbon film on quantifoil</details>
               </grid>
               <vitrification>
                  <cryogen_name>NONE</cryogen_name>
                  <instrument>OTHER</instrument>
               </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_defocus_min units="&#181;m">0.8</nominal_defocus_min>
               <nominal_defocus_max units="&#181;m">0.9</nominal_defocus_max>
               <nominal_magnification>80000.0</nominal_magnification>
               <specimen_holder_model>SIDE ENTRY, EUCENTRIC</specimen_holder_model>
               <image_recording_list>
                  <image_recording>
                     <film_or_detector_model category="CCD">TVIPS TEMCAM-F415 (4k x 4k)</film_or_detector_model>
                     <number_real_images>71</number_real_images>
                     <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>
               <specimen_holder>Eucentric</specimen_holder>
            </single_particle_microscopy>
         </microscopy_list>
         <singleparticle_processing image_processing_id="1">
            <final_reconstruction>
               <applied_symmetry>
                  <point_group>C1</point_group>
               </applied_symmetry>
               <resolution res_type="BY AUTHOR" units="&#8491;">25.0</resolution>
               <resolution_method>FSC 0.5 CUT-OFF</resolution_method>
               <software_list>
                  <software>
                     <name>Imagic</name>
                  </software>
               </software_list>
            </final_reconstruction>
         </singleparticle_processing>
      </structure_determination>
   </structure_determination_list>
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      <file>emd_2026.map.gz</file>
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         <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>-64</col>
         <row>-64</row>
         <sec>-64</sec>
      </origin>
      <spacing>
         <x>128</x>
         <y>128</y>
         <z>128</z>
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      <cell>
         <a units="&#8491;">278.144</a>
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         <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>
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      <statistics>
         <minimum>-11.30645084</minimum>
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      <contour_list>
         <contour primary="true">
            <level>5.5</level>
            <source>AUTHOR</source>
         </contour>
      </contour_list>
      <annotation_details>Map of the proteasome subunit Rpn1 from S. cerevisiae</annotation_details>
      <details>::::EMDATABANK.org::::EMD-2026::::</details>
   </map>
</emd>