<emd emdb_id="EMD-6149" version="3.0.1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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>PDBj</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>PDBj</last_processing>
        </sites>
        <key_dates>
            <deposition>2014-10-23</deposition>
            <header_release>2014-11-26</header_release>
            <map_release>2014-11-26</map_release>
            <update>2015-06-03</update>
        </key_dates>
        <title>Electron cryo-microscopy structure of EngA bound with the 50S ribosomal subunit</title>
        <authors_list>
            <author>Zhang X</author>
            <author>Yan K</author>
            <author>Lei J</author>
            <author>Gao N</author>
        </authors_list>
        <keywords>Ribosome assembly, EngA, Der, YphC, GTPase, RNA folding</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Zhang X</author>
                    <author order="2">Yan K</author>
                    <author order="3">Zhang Y</author>
                    <author order="4">Li N</author>
                    <author order="5">Ma C</author>
                    <author order="6">Li Z</author>
                    <author order="7">Zhang Y</author>
                    <author order="8">Feng B</author>
                    <author order="9">Liu J</author>
                    <author order="10">Sun Y</author>
                    <author order="11">Xu Y</author>
                    <author order="12">Lei J</author>
                    <author order="13">Gao N</author>
                    <title>Structural insights into the function of a unique tandem GTPase EngA in bacterial ribosome assembly</title>
                    <journal>NUCLEIC ACIDS RES.</journal>
                    <volume>42</volume>
                    <first_page>13430</first_page>
                    <last_page>13439</last_page>
                    <year>2014</year>
                    <external_references type="PUBMED">25389271</external_references>
                    <external_references type="DOI">doi:10.1093/nar/gku1135</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>3j8g</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>EngA bound with E. coli 50S subunit</name>
        <supramolecule_list>
            <sample_supramolecule supramolecule_id="1000">
                <name>EngA bound with E. coli 50S subunit</name>
                <number_unique_components>2</number_unique_components>
            </sample_supramolecule>
            <complex_supramolecule supramolecule_id="1">
                <name>50S ribosome</name>
                <recombinant_exp_flag>false</recombinant_exp_flag>
                <natural_source database="NCBI">
                    <organism ncbi="83333">Escherichia coli K-12</organism>
                </natural_source>
                <recombinant_expression database="NCBI" />
                <ribosome-details>ribosome-prokaryote: LSU 50S, LSU RNA 23S, LSU RNA 5S</ribosome-details>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name synonym="Der">EngA</name>
                <natural_source database="NCBI">
                    <organism ncbi="83333">Escherichia coli K-12</organism>
                </natural_source>
                <recombinant_exp_flag>true</recombinant_exp_flag>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                    <recombinant_strain>BL21(DE3)</recombinant_strain>
                    <recombinant_plasmid>pET28a</recombinant_plasmid>
                </recombinant_expression>
                <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>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                    </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>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <date>2012-04-01</date>
                    <image_recording_list>
                        <image_recording>
                            <film_or_detector_model category="CCD">FEI EAGLE (4k x 4k)</film_or_detector_model>
                        </image_recording>
                    </image_recording_list>
                </single_particle_microscopy>
            </microscopy_list>
            <singleparticle_processing image_processing_id="1">
                <final_reconstruction>
                    <resolution res_type="BY AUTHOR" units="&#8491;">5.0</resolution>
                    <resolution_method>OTHER</resolution_method>
                    <software_list>
                        <software>
                            <name>Relion</name>
                        </software>
                    </software_list>
                    <number_images_used>189614</number_images_used>
                </final_reconstruction>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="128001">
        <file>emd_6149.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>320</col>
            <row>320</row>
            <sec>320</sec>
        </dimensions>
        <origin>
            <col>-159</col>
            <row>-159</row>
            <sec>-159</sec>
        </origin>
        <spacing>
            <x>320</x>
            <y>320</y>
            <z>320</z>
        </spacing>
        <cell>
            <a units="&#8491;">373.088</a>
            <b units="&#8491;">373.088</b>
            <c units="&#8491;">373.088</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>-0.09316271</minimum>
            <maximum>0.23179024</maximum>
            <average>0.00017538</average>
            <std>0.01283344</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>0.045</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <annotation_details>Reconstruction of E. coli 50S subunit and EngA</annotation_details>
        <details>::::EMDATABANK.org::::EMD-6149::::</details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>2WWQ</access_code>
                </initial_model>
                <refinement_protocol>FLEXIBLE FIT</refinement_protocol>
                <refinement_space>REAL</refinement_space>
            </modelling>
            <modelling>
                <initial_model>
                    <access_code>2HJG</access_code>
                </initial_model>
                <refinement_protocol>FLEXIBLE FIT</refinement_protocol>
                <refinement_space>REAL</refinement_space>
            </modelling>
        </modelling_list>
    </interpretation>
    <validation>
        <fsc_curve>
            <file>emd_6149_fsc.xml</file>
        </fsc_curve>
    </validation>
</emd>