<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" emdb_id="EMD-2712" 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>2014-07-17</deposition>
         <header_release>2014-07-23</header_release>
         <map_release>2014-10-01</map_release>
         <update>2014-10-08</update>
      </key_dates>
      <title>Structure of the RET receptor tyrosine kinase extracellular domain</title>
      <authors_list>
         <author>Goodman K</author>
         <author>Kjaer S</author>
         <author>Beuron F</author>
         <author>Knowles P</author>
         <author>Nawrotek A</author>
         <author>Burns E</author>
         <author>Purkiss A</author>
         <author>George R</author>
         <author>Santoro M</author>
         <author>Morris EP</author>
         <author>McDonald NQ</author>
      </authors_list>
      <keywords>vertebrate development, human diseases, RET-GFL-GFRa complex</keywords>
   </admin>
   <crossreferences>
      <citation_list>
         <primary_citation>
            <journal_citation published="true">
               <author order="1">Goodman K</author>
               <author order="2">Kjaer S</author>
               <author order="3">Beuron F</author>
               <author order="4">Knowles P</author>
               <author order="5">Nawrotek A</author>
               <author order="6">Burns E</author>
               <author order="7">Purkiss A</author>
               <author order="8">George R</author>
               <author order="9">Santoro M</author>
               <author order="10">Morris EP</author>
               <author order="11">McDonald NQ</author>
               <title>RET recognition of GDNF-GFRa1 ligand by a composite binding site promotes membrane-proximal self-association.</title>
               <journal>CELL REP.</journal>
               <volume>8</volume>
               <first_page>1894</first_page>
               <last_page>1904</last_page>
               <year>2014</year>
               <external_references type="PUBMED">25242331</external_references>
               <external_references type="DOI">doi:10.1016/j.celrep.2014.08.040</external_references>
            </journal_citation>
         </primary_citation>
      </citation_list>
      <pdb_list>
         <pdb_reference>
            <pdb_id>4ux8</pdb_id>
            <relationship>
               <in_frame>FULLOVERLAP</in_frame>
            </relationship>
         </pdb_reference>
      </pdb_list>
   </crossreferences>
   <sample>
      <name>Reconstituted mammalian RETecd-GDNF-GFRa1 ternary complex</name>
      <supramolecule_list>
         <sample_supramolecule supramolecule_id="1000">
            <name>Reconstituted mammalian RETecd-GDNF-GFRa1 ternary complex</name>
            <details>Monodisperse. Measured mass difference with theoretical MW corresponds to glycosylation.</details>
            <oligomeric_state>Hexamer</oligomeric_state>
            <number_unique_components>3</number_unique_components>
            <molecular_weight>
               <experimental units="MDa">0.34</experimental>
               <theoretical units="MDa">0.26</theoretical>
               <method>SEC-MALS</method>
            </molecular_weight>
         </sample_supramolecule>
      </supramolecule_list>
      <macromolecule_list>
         <protein_or_peptide macromolecule_id="1">
            <name synonym="RET">RET receptor tyrosine kinase</name>
            <natural_source database="NCBI">
               <organism ncbi="9606">Homo sapiens</organism>
               <synonym_organism>Human</synonym_organism>
            </natural_source>
            <molecular_weight>
               <theoretical units="MDa">0.08</theoretical>
            </molecular_weight>
            <number_of_copies>2</number_of_copies>
            <recombinant_exp_flag>true</recombinant_exp_flag>
            <recombinant_expression database="NCBI">
               <recombinant_organism>Chinese Hamster Ovary</recombinant_organism>
               <recombinant_strain>Lec8</recombinant_strain>
            </recombinant_expression>
            <sequence>
               </sequence>
         </protein_or_peptide>
         <protein_or_peptide macromolecule_id="2">
            <name>GDNF receptor alpha</name>
            <natural_source database="NCBI">
               <organism ncbi="10116">Rattus norvegicus</organism>
               <synonym_organism>rat</synonym_organism>
            </natural_source>
            <molecular_weight>
               <theoretical units="MDa">0.04</theoretical>
            </molecular_weight>
            <number_of_copies>2</number_of_copies>
            <recombinant_exp_flag>true</recombinant_exp_flag>
            <recombinant_expression database="NCBI">
               <recombinant_organism>Chinese Hamster Ovary</recombinant_organism>
            </recombinant_expression>
            <sequence>
               </sequence>
         </protein_or_peptide>
         <protein_or_peptide macromolecule_id="3">
            <name synonym="GDNF">glial-cell-line-derived neurotrophic factor</name>
            <natural_source database="NCBI">
               <organism ncbi="9606">Homo sapiens</organism>
               <synonym_organism>Human</synonym_organism>
            </natural_source>
            <molecular_weight>
               <theoretical units="MDa">0.01</theoretical>
            </molecular_weight>
            <details>from Amgen (USA)</details>
            <number_of_copies>2</number_of_copies>
            <recombinant_exp_flag>true</recombinant_exp_flag>
            <recombinant_expression database="NCBI">
               </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">0.03</concentration>
               <buffer>
                  <ph>8.0</ph>
                  <details>20 mM Tris HCl, 300 mM NaCl, 1 mM Ca++</details>
               </buffer>
               <staining>
                  <type>NEGATIVE</type>
                  <details>Samples were applied to glow-discharged grids and stained with 2% uranyl acetate</details>
               </staining>
               <grid>
                  <details>quantifoil (R1.2/1.3) coated with a thin carbon layer, glow discharge in air.</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">0.9</nominal_defocus_min>
               <nominal_magnification>80000.0</nominal_magnification>
               <specimen_holder_model>SIDE ENTRY, EUCENTRIC</specimen_holder_model>
               <date>2012-11-08</date>
               <image_recording_list>
                  <image_recording>
                     <film_or_detector_model category="CCD">TVIPS TEMCAM-F415 (4k x 4k)</film_or_detector_model>
                     <number_real_images>1200</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>
            </single_particle_microscopy>
         </microscopy_list>
         <singleparticle_processing image_processing_id="1">
            <details>The particles were selected manually. The starting model was calculated from reference-free classes using angular reconstitution methods and further refined by projection matching.</details>
            <final_reconstruction>
               <applied_symmetry>
                  <point_group>C2</point_group>
               </applied_symmetry>
               <algorithm>OTHER</algorithm>
               <resolution res_type="BY AUTHOR" units="&#8491;">24.0</resolution>
               <resolution_method>OTHER</resolution_method>
               <software_list>
                  <software>
                     <name>IMAGIC, SPIDER, in-house, software</name>
                  </software>
               </software_list>
               <number_images_used>8519</number_images_used>
            </final_reconstruction>
            <final_two_d_classification>
               <number_classes>975</number_classes>
            </final_two_d_classification>
         </singleparticle_processing>
      </structure_determination>
   </structure_determination_list>
   <map format="CCP4" size_kbytes="3457">
      <file>emd_2712.map.gz</file>
      <symmetry>
         <space_group>1</space_group>
      </symmetry>
      <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
      <dimensions>
         <col>96</col>
         <row>96</row>
         <sec>96</sec>
      </dimensions>
      <origin>
         <col>-48</col>
         <row>-48</row>
         <sec>-48</sec>
      </origin>
      <spacing>
         <x>96</x>
         <y>96</y>
         <z>96</z>
      </spacing>
      <cell>
         <a units="&#8491;">416.64</a>
         <b units="&#8491;">416.64</b>
         <c units="&#8491;">416.64</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>-19.55950928</minimum>
         <maximum>26.869428630000002</maximum>
         <average>0.0</average>
         <std>1.0</std>
      </statistics>
      <pixel_spacing>
         <x units="&#8491;">4.34</x>
         <y units="&#8491;">4.34</y>
         <z units="&#8491;">4.34</z>
      </pixel_spacing>
      <contour_list>
         <contour primary="true">
            <level>2.42</level>
            <source>AUTHOR</source>
         </contour>
      </contour_list>
      <annotation_details>Reconstruction of a reconstituted mammalian RETecd-GDNF-GFRa1 ternary (mTC) complex</annotation_details>
      <details>::::EMDATABANK.org::::EMD-2712::::</details>
   </map>
</emd>