<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" emdb_id="EMD-3133" 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>2015-08-23</deposition>
         <header_release>2015-09-16</header_release>
         <map_release>2015-10-14</map_release>
         <update>2015-12-02</update>
      </key_dates>
      <title>Cryo-EM structures of the 50S ribosome subunit bound with HflX</title>
      <authors_list>
         <author>Zhang Y</author>
         <author>Mandava CS</author>
         <author>Cao W</author>
         <author>Li X</author>
         <author>Zhang D</author>
         <author>Li N</author>
         <author>Zhang Y</author>
         <author>Zhang X</author>
         <author>Qin Y</author>
         <author>Mi K</author>
         <author>Lei J</author>
         <author>Sanyal S</author>
         <author>Gao N</author>
      </authors_list>
      <keywords>Ribosome rescue</keywords>
   </admin>
   <crossreferences>
      <citation_list>
         <primary_citation>
            <journal_citation published="true">
               <author order="1">Zhang Y</author>
               <author order="2">Mandava CS</author>
               <author order="3">Cao W</author>
               <author order="4">Li X</author>
               <author order="5">Zhang D</author>
               <author order="6">Li N</author>
               <author order="7">Zhang Y</author>
               <author order="8">Zhang X</author>
               <author order="9">Qin Y</author>
               <author order="10">Mi K</author>
               <author order="11">Lei J</author>
               <author order="12">Sanyal S</author>
               <author order="13">Gao N</author>
               <title>HflX is a ribosome splitting factor rescuing stalled ribosomes under stress conditions</title>
               <journal>NAT.STRUCT.MOL.BIOL.</journal>
               <volume>22</volume>
               <first_page>906</first_page>
               <last_page>913</last_page>
               <year>2015</year>
               <external_references type="PUBMED">26458047</external_references>
               <external_references type="DOI">doi:10.1038/nsmb.3103</external_references>
            </journal_citation>
         </primary_citation>
      </citation_list>
      <pdb_list>
         <pdb_reference>
            <pdb_id>5ady</pdb_id>
            <relationship>
               <in_frame>FULLOVERLAP</in_frame>
            </relationship>
         </pdb_reference>
      </pdb_list>
   </crossreferences>
   <sample>
      <name>50S-HflX complex</name>
      <supramolecule_list>
         <sample_supramolecule supramolecule_id="1000">
            <name>50S-HflX complex</name>
            <number_unique_components>2</number_unique_components>
            <molecular_weight>
               <experimental units="MDa">1.5</experimental>
               <theoretical units="MDa">1.5</theoretical>
            </molecular_weight>
         </sample_supramolecule>
         <complex_supramolecule supramolecule_id="1">
            <name synonym="50S subunit">prokaryotic 50S ribosome subunit</name>
            <recombinant_exp_flag>false</recombinant_exp_flag>
            <natural_source database="NCBI">
               <organism ncbi="83333">Escherichia coli K-12</organism>
               <cellular_location>Cytoplasm</cellular_location>
            </natural_source>
            <recombinant_expression database="NCBI">
               </recombinant_expression>
            <molecular_weight>
               <experimental units="MDa">1.5</experimental>
               <theoretical units="MDa">1.5</theoretical>
            </molecular_weight>
            <ribosome-details>ribosome-prokaryote: LSU 50S</ribosome-details>
         </complex_supramolecule>
      </supramolecule_list>
      <macromolecule_list>
         <protein_or_peptide macromolecule_id="1">
            <name>HflX</name>
            <natural_source database="NCBI">
               <organism ncbi="562">Escherichia coli</organism>
               <cellular_location>Cytoplasm</cellular_location>
            </natural_source>
            <molecular_weight>
               <experimental units="MDa">0.05</experimental>
               <theoretical units="MDa">0.05</theoretical>
            </molecular_weight>
            <details>GMPPNP was bound with HflX in the 50S-HflX complex.</details>
            <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="511693">Escherichia coli BL21</recombinant_organism>
               <recombinant_plasmid>pET28a</recombinant_plasmid>
            </recombinant_expression>
            <sequence>
               <external_references type="UNIPROTKB">P25519</external_references>
            </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">
               <buffer>
                  <ph>7.5</ph>
                  <details>20mM Tris-HCl, 100mM NH4Cl, 10mM MgCl2</details>
               </buffer>
               <grid>
                  <details>200 mesh copper grid with thin carbon support, glow discharged</details>
               </grid>
               <vitrification>
                  <cryogen_name>ETHANE</cryogen_name>
                  <chamber_humidity units="percentage">100</chamber_humidity>
                  <instrument>FEI VITROBOT MARK IV</instrument>
                  <method>Blot for 1 seconds before plunging</method>
               </vitrification>
            </single_particle_preparation>
         </specimen_preparation_list>
         <microscopy_list>
            <single_particle_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">300</acceleration_voltage>
               <nominal_cs units="mm">2.70</nominal_cs>
               <nominal_defocus_min units="&#181;m">1.0</nominal_defocus_min>
               <nominal_defocus_max units="&#181;m">4.0</nominal_defocus_max>
               <nominal_magnification>75000.0</nominal_magnification>
               <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
               <date>2012-01-07</date>
               <image_recording_list>
                  <image_recording>
                     <film_or_detector_model category="CCD">FEI EAGLE (4k x 4k)</film_or_detector_model>
                     <number_real_images>6022</number_real_images>
                     <average_electron_dose_per_image units="e/&#8491;^2">20</average_electron_dose_per_image>
                  </image_recording>
               </image_recording_list>
            </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>C1</point_group>
               </applied_symmetry>
               <algorithm>OTHER</algorithm>
               <resolution res_type="BY AUTHOR" units="&#8491;">4.5</resolution>
               <resolution_method>OTHER</resolution_method>
               <software_list>
                  <software>
                     <name>Spider, Relion</name>
                  </software>
               </software_list>
               <number_images_used>384206</number_images_used>
            </final_reconstruction>
         </singleparticle_processing>
      </structure_determination>
   </structure_determination_list>
   <map format="CCP4" size_kbytes="105470">
      <file>emd_3133.map.gz</file>
      <symmetry>
         <space_group>1</space_group>
      </symmetry>
      <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
      <dimensions>
         <col>300</col>
         <row>300</row>
         <sec>300</sec>
      </dimensions>
      <origin>
         <col>-149</col>
         <row>-149</row>
         <sec>-149</sec>
      </origin>
      <spacing>
         <x>300</x>
         <y>300</y>
         <z>300</z>
      </spacing>
      <cell>
         <a units="&#8491;">349.77</a>
         <b units="&#8491;">349.77</b>
         <c units="&#8491;">349.77</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>-2.33597445</minimum>
         <maximum>5.85036802</maximum>
         <average>0.04000991</average>
         <std>0.41606173</std>
      </statistics>
      <pixel_spacing>
         <x units="&#8491;">1.1659</x>
         <y units="&#8491;">1.1659</y>
         <z units="&#8491;">1.1659</z>
      </pixel_spacing>
      <contour_list>
         <contour primary="true">
            <level>1.4</level>
            <source>AUTHOR</source>
         </contour>
      </contour_list>
      <annotation_details>Cryo-EM structures of the 50S ribosome subunit bound with HflX</annotation_details>
      <details>::::EMDATABANK.org::::EMD-3133::::</details>
   </map>
   <interpretation>
      <modelling_list>
         <modelling>
            <initial_model>
               <access_code>3FIK</access_code>
            </initial_model>
            <refinement_protocol>FLEXIBLE FIT</refinement_protocol>
            <software_list>
               <software>
                  <name>MDFF</name>
               </software>
            </software_list>
            <refinement_space>REAL</refinement_space>
         </modelling>
         <modelling>
            <initial_model>
               <access_code>3KXI</access_code>
            </initial_model>
            <refinement_protocol>FLEXIBLE FIT</refinement_protocol>
            <software_list>
               <software>
                  <name>MDFF</name>
               </software>
            </software_list>
            <details>Atomic model of E. coli HflX was modeled from the crystal structure of Sulfolobus solfataricus HflX (PDB id: 3KXI).The homology modeling was performed with MODELLER. The model of the CTD of E. coli HflX was independently modeled by I-TASSER (template PDB code: 2WBM, residues 164-232). The switch I region disordered in the crystal structure of S. solfataricus HflX was modeled using the crystal structure of S. thermophilus NFeoB (PDB id: 3B1X) as a template. GMPPNP was derived from a previous model (PDB id: 3B1X) and docked into the atomic model of the E. coli HflX.</details>
            <refinement_space>REAL</refinement_space>
         </modelling>
      </modelling_list>
      <figure_list>
         <figure>
            <file>emd_3133.png</file>
         </figure>
      </figure_list>
   </interpretation>
</emd>