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    <admin>
        <current_status>
            <date>2018-07-18</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2017-02-27</deposition>
            <header_release>2017-03-15</header_release>
            <map_release>2017-04-19</map_release>
            <update>2018-07-18</update>
        </key_dates>
        <title>Structure of the 30S subunit, subclass I</title>
        <authors_list>
            <author>Razi A</author>
            <author>Guarne A</author>
            <author>Ortega J</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Razi A</author>
                    <author order="2">Guarne A</author>
                    <author order="3">Ortega J</author>
                    <title>The cryo-EM structure of YjeQ bound to the 30S subunit suggests a fidelity checkpoint function for this protein in ribosome assembly.</title>
                    <journal_abbreviation>Proc. Natl. Acad. Sci. U.S.A.</journal_abbreviation>
                    <country>US</country>
                    <volume>114</volume>
                    <first_page>E3396</first_page>
                    <last_page>E3403</last_page>
                    <year>2017</year>
                    <external_references type="PUBMED">28396444</external_references>
                    <external_references type="DOI">doi:10.1073/pnas.1618016114</external_references>
                    <external_references type="ISSN">1091-6490</external_references>
                    <external_references type="CSD">0040</external_references>
                    <external_references type="ASTM">PNASA6</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
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                <emdb_id>EMD-8621</emdb_id>
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                    <other>other EM volume</other>
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            <emdb_reference>
                <emdb_id>EMD-8627</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
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            <emdb_reference>
                <emdb_id>EMD-8626</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-8628</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
        </emdb_list>
    </crossreferences>
    <sample>
        <name>30S Consensus subunit, subclass I</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>30S Consensus subunit, subclass I</name>
                <parent>0</parent>
                <natural_source database="NCBI">
                    <organism ncbi="562">Escherichia coli</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
    </sample>
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                        <ph>7.5</ph>
                        <details>10 mM Tris-HCl at pH 7.5, 10 mM magnesium acetate, 150 mM NH4Cl, 3mM 2-mercaptoethanol and 2 mM GMP-PNP</details>
                    </buffer>
                    <grid>
                        <model>C-flat CFT-222C</model>
                        <material>COPPER</material>
                        <mesh>200</mesh>
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                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">298</chamber_temperature>
                        <instrument>FEI VITROBOT MARK III</instrument>
                        <details />
                    </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>
                    <c2_aperture_diameter units="&#181;m">51.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.0</nominal_cs>
                    <nominal_defocus_min units="&#181;m">0.5</nominal_defocus_min>
                    <nominal_defocus_max units="&#181;m">3.0</nominal_defocus_max>
                    <nominal_magnification>25000.</nominal_magnification>
                    <calibrated_magnification>34482.</calibrated_magnification>
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                                <frames_per_image>1-20</frames_per_image>
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                            <average_electron_dose_per_image units="e/&#8491;^2">2.0</average_electron_dose_per_image>
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                    <number_selected>487018</number_selected>
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                <ctf_correction>
                    <software_list>
                        <software>
                            <name>CTFFIND3</name>
                            <version>3</version>
                        </software>
                        <software>
                            <name>RELION</name>
                            <version>1.4</version>
                        </software>
                    </software_list>
                </ctf_correction>
                <startup_model type_of_model="PDB ENTRY">
                    <pdb_model>
                        <pdb_id>2AVY</pdb_id>
                    </pdb_model>
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                    <resolution res_type="BY AUTHOR" units="&#8491;">6.5</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
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                        <software>
                            <name>RELION</name>
                            <version>1.4</version>
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                <initial_angle_assignment>
                    <type>PROJECTION MATCHING</type>
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                        <software>
                            <name>RELION</name>
                            <version>1.4</version>
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                    <type>PROJECTION MATCHING</type>
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                        <software>
                            <name>RELION</name>
                            <version>1.4</version>
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                        <software>
                            <name>RELION</name>
                            <version>1.4</version>
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            <space_group>1</space_group>
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    <interpretation>
        <modelling_list>
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                <refinement_protocol>RIGID BODY FIT</refinement_protocol>
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