<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" emdb_id="EMD-2105" 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>2012-05-23</deposition>
         <header_release>2012-10-03</header_release>
         <map_release>2012-10-10</map_release>
         <update>2012-10-17</update>
      </key_dates>
      <title>Single particle electron microscopy of PilQ dodecameric complexes from Neisseria meningitidis.</title>
      <authors_list>
         <author>Berry JL</author>
         <author>Phelan MM</author>
         <author>Collins RF</author>
         <author>Adomavicius T</author>
         <author>Tonjum T</author>
         <author>Frye S</author>
         <author>Bird L</author>
         <author>Owens R</author>
         <author>Ford RC</author>
         <author>Lian LY</author>
         <author>Derrick JP</author>
      </authors_list>
      <keywords>Outer membrane protein, PilQ, pilus biogenesis</keywords>
   </admin>
   <crossreferences>
      <citation_list>
         <primary_citation>
            <journal_citation published="true">
               <author order="1">Berry JL</author>
               <author order="2">Phelan MM</author>
               <author order="3">Collins RF</author>
               <author order="4">Adomavicius T</author>
               <author order="5">Tonjum T</author>
               <author order="6">Frye S</author>
               <author order="7">Bird L</author>
               <author order="8">Owens R</author>
               <author order="9">Ford RC</author>
               <author order="10">Lian LY</author>
               <author order="11">Derrick JP</author>
               <title>Structure and assembly of a trans-periplasmic channel for type IV pili in Neisseria meningitidis.</title>
               <journal>PLOS PATHOG.</journal>
               <volume>8</volume>
               <first_page>e1002923</first_page>
               <last_page>e1002923</last_page>
               <year>2012</year>
               <external_references type="PUBMED">23028322</external_references>
               <external_references type="DOI">doi:10.1371/journal.ppat.1002923</external_references>
            </journal_citation>
         </primary_citation>
      </citation_list>
      <pdb_list>
         <pdb_reference>
            <pdb_id>4av2</pdb_id>
            <relationship>
               <in_frame>FULLOVERLAP</in_frame>
            </relationship>
         </pdb_reference>
      </pdb_list>
   </crossreferences>
   <sample>
      <name>Outer membrane protein PilQ from Neisseria meningitidis</name>
      <supramolecule_list>
         <sample_supramolecule supramolecule_id="1000">
            <name>Outer membrane protein PilQ from Neisseria meningitidis</name>
            <details>Isolated from Neisserial membranes.</details>
            <oligomeric_state>Dodecamer</oligomeric_state>
            <number_unique_components>1</number_unique_components>
            <molecular_weight>
               <experimental units="MDa">0.96</experimental>
               <theoretical units="MDa">0.96</theoretical>
               <method>From sequence</method>
            </molecular_weight>
         </sample_supramolecule>
      </supramolecule_list>
      <macromolecule_list>
         <protein_or_peptide macromolecule_id="1">
            <name>PilQ</name>
            <natural_source database="NCBI">
               <organism ncbi="122586">Neisseria meningitidis MC58</organism>
               <cellular_location>Outer membrane</cellular_location>
            </natural_source>
            <molecular_weight>
               <experimental units="MDa">0.96</experimental>
               <theoretical units="MDa">0.96</theoretical>
            </molecular_weight>
            <number_of_copies>1</number_of_copies>
            <oligomeric_state>Dodecamer</oligomeric_state>
            <recombinant_exp_flag>false</recombinant_exp_flag>
            <recombinant_expression database="NCBI">
               </recombinant_expression>
            <sequence>
               <external_references type="GO">GO:0006810</external_references>
               <external_references type="GO">GO:0009306</external_references>
               <external_references type="GO">GO:0015031</external_references>
               <external_references type="GO">GO:0030420</external_references>
               <external_references type="GO">GO:0009279</external_references>
               <external_references type="GO">GO:0016020</external_references>
               <external_references type="INTERPRO">IPR021731</external_references>
               <external_references type="INTERPRO">IPR001775</external_references>
               <external_references type="INTERPRO">IPR005644</external_references>
               <external_references type="INTERPRO">IPR013355</external_references>
               <external_references type="INTERPRO">IPR011662</external_references>
               <external_references type="INTERPRO">IPR004846</external_references>
               <external_references type="INTERPRO">IPR004845</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">
               <concentration units="mg/mL">1.0</concentration>
               <buffer>
                  <ph>7.5</ph>
                  <details>10 mM Tris-HCl, pH 7.5, 150 mM NaCl, 5 mM EDTA, and 0.1% (w/v) Zwittergent 3-10</details>
               </buffer>
               <staining>
                  <type>NEGATIVE</type>
                  <details>Unstained: Both sides of the grid were briefly blotted dry with Whatman No. 1 filter paper (2 x 1s blots) using a Vitrobot (FEI) device (90% relative humidity), and the grid was then immediately plunged into liquid ethane maintained at &lt;100K.</details>
               </staining>
               <grid>
                  <details>400 mesh Quantifoil holey carbon grid with 1.2 micron diameter holes.</details>
               </grid>
               <vitrification>
                  <cryogen_name>ETHANE</cryogen_name>
                  <chamber_humidity units="percentage">90</chamber_humidity>
                  <chamber_temperature units="K">100</chamber_temperature>
                  <instrument>FEI VITROBOT MARK III</instrument>
                  <method>Both sides of the grid were briefly blotted dry with Whatman No. 1 filter paper in a humidity-controlled chamber using a Vitrobot (FEI) device (90% relative humidity), and the grid was then plunged into liquid ethane maintained at &lt;100K.</method>
               </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_cs units="mm">2.0</nominal_cs>
               <nominal_defocus_min units="&#181;m">1.2</nominal_defocus_min>
               <nominal_defocus_max units="&#181;m">5.1</nominal_defocus_max>
               <nominal_magnification>33000.0</nominal_magnification>
               <calibrated_magnification>33112.0</calibrated_magnification>
               <specimen_holder_model>GATAN LIQUID NITROGEN</specimen_holder_model>
               <temperature>
                  <temperature_min units="K">94</temperature_min>
                  <temperature_max units="K">100</temperature_max>
                  <temperature_average units="K">97</temperature_average>
               </temperature>
               <alignment_procedure>
                  <legacy>
                     <astigmatism>Via FFT</astigmatism>
                  </legacy>
               </alignment_procedure>
               <date>2007-11-27</date>
               <image_recording_list>
                  <image_recording>
                     <film_or_detector_model category="CCD">GENERIC GATAN (4k x 4k)</film_or_detector_model>
                     <number_real_images>55</number_real_images>
                     <average_electron_dose_per_image units="e/&#8491;^2">4</average_electron_dose_per_image>
                     <bits_per_pixel>8.</bits_per_pixel>
                  </image_recording>
               </image_recording_list>
               <specimen_holder>Liquid nitrogen cooled</specimen_holder>
            </single_particle_microscopy>
         </microscopy_list>
         <singleparticle_processing image_processing_id="1">
            <details>29000</details>
            <ctf_correction>
               <details>CTFFIT each micrograph</details>
            </ctf_correction>
            <final_reconstruction>
               <applied_symmetry>
                  <point_group>C12</point_group>
               </applied_symmetry>
               <algorithm>OTHER</algorithm>
               <resolution res_type="BY AUTHOR" units="&#8491;">26.0</resolution>
               <resolution_method>OTHER</resolution_method>
               <software_list>
                  <software>
                     <name>EMAN</name>
                  </software>
               </software_list>
               <details>Two different starting models were employed with convergence between them. This map was generated from model 1.</details>
               <number_images_used>25303</number_images_used>
            </final_reconstruction>
            <final_two_d_classification>
               <number_classes>101</number_classes>
            </final_two_d_classification>
         </singleparticle_processing>
      </structure_determination>
   </structure_determination_list>
   <map format="CCP4" size_kbytes="1025">
      <file>emd_2105.map.gz</file>
      <symmetry>
         <space_group>1</space_group>
      </symmetry>
      <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
      <dimensions>
         <col>64</col>
         <row>64</row>
         <sec>64</sec>
      </dimensions>
      <origin>
         <col>-32</col>
         <row>-32</row>
         <sec>-32</sec>
      </origin>
      <spacing>
         <x>64</x>
         <y>64</y>
         <z>64</z>
      </spacing>
      <cell>
         <a units="&#8491;">289.92</a>
         <b units="&#8491;">289.92</b>
         <c units="&#8491;">289.92</c>
         <alpha units="deg">90.0</alpha>
         <beta units="deg">90.0</beta>
         <gamma units="deg">90.0</gamma>
      </cell>
      <axis_order>
         <fast>Y</fast>
         <medium>X</medium>
         <slow>Z</slow>
      </axis_order>
      <statistics>
         <minimum>-0.11259504</minimum>
         <maximum>0.34620619</maximum>
         <average>0.09523162</average>
         <std>0.06463852</std>
      </statistics>
      <pixel_spacing>
         <x units="&#8491;">4.53</x>
         <y units="&#8491;">4.53</y>
         <z units="&#8491;">4.53</z>
      </pixel_spacing>
      <contour_list>
         <contour primary="true">
            <level>0.28</level>
            <source>EMDB</source>
         </contour>
      </contour_list>
      <annotation_details>Reconstruction of outer membrane protein complex PilQ.</annotation_details>
      <details>::::EMDATABANK.org::::EMD-2105::::</details>
   </map>
</emd>