<emd emdb_id="EMD-5290" 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>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2011-05-13</deposition>
            <header_release>2011-05-25</header_release>
            <map_release>2011-09-07</map_release>
            <update>2011-09-07</update>
        </key_dates>
        <title>The cryo-EM map of DegQ 12-mer</title>
        <authors_list>
            <author>Bai XC</author>
            <author>Wang XJ</author>
            <author>Ye YY</author>
            <author>Pan XJ</author>
            <author>Chang LF</author>
            <author>Leng D</author>
            <author>Sui SF</author>
        </authors_list>
        <keywords>HtrA, 12-mer</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Bai XC</author>
                    <author order="2">Pan XJ</author>
                    <author order="3">Wang XJ</author>
                    <author order="4">Ye YY</author>
                    <author order="5">Chang LF</author>
                    <author order="6">Leng D</author>
                    <author order="7">Lei J</author>
                    <author order="8">Sui SF</author>
                    <title>Characterization of the structure and function of Escherichia coli DegQ as a representative of the DegQ-like proteases of bacterial HtrA family proteins.</title>
                    <journal>STRUCTURE</journal>
                    <volume>19</volume>
                    <first_page>1328</first_page>
                    <last_page>1337</last_page>
                    <year>2011</year>
                    <external_references type="PUBMED">21893291</external_references>
                    <external_references type="DOI">doi:10.1016/j.str.2011.06.013</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
    </crossreferences>
    <sample>
        <name>DegQ</name>
        <supramolecule_list>
            <sample_supramolecule supramolecule_id="1000">
                <name>DegQ</name>
                <oligomeric_state>12-mer</oligomeric_state>
                <number_unique_components>12</number_unique_components>
                <molecular_weight>
                    <experimental units="MDa">0.5</experimental>
                    <theoretical units="MDa">0.5</theoretical>
                    <method>size-exclusion chromatography</method>
                </molecular_weight>
            </sample_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name synonym="DegQ">DegQ</name>
                <natural_source database="NCBI">
                    <organism ncbi="562">Escherichia coli</organism>
                    <synonym_organism>Escherichia coli</synonym_organism>
                    <cellular_location>periplasmic</cellular_location>
                </natural_source>
                <molecular_weight>
                    <experimental units="MDa">45</experimental>
                    <theoretical units="MDa">45</theoretical>
                </molecular_weight>
                <number_of_copies>12</number_of_copies>
                <oligomeric_state>12-mer</oligomeric_state>
                <recombinant_exp_flag>true</recombinant_exp_flag>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                    <recombinant_plasmid>pET-28a</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">
                    <concentration units="mg/mL">0.5</concentration>
                    <buffer>
                        <ph>7.6</ph>
                        <details>40 mM Na2HPO4, 10 mM NaH2PO4, 25 mM NaCl</details>
                    </buffer>
                    <grid>
                        <details>400 mesh grid</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                        <details>Vitrification instrument: Vitrobot Mark IV</details>
                        <method>Blot for 1.5 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>SPOT SCAN</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">2.7</nominal_cs>
                    <nominal_defocus_min units="&#181;m">1.5</nominal_defocus_min>
                    <nominal_defocus_max units="&#181;m">3.0</nominal_defocus_max>
                    <nominal_magnification>59000.0</nominal_magnification>
                    <calibrated_magnification>102740.0</calibrated_magnification>
                    <specimen_holder_model>OTHER</specimen_holder_model>
                    <date>2011-01-03</date>
                    <image_recording_list>
                        <image_recording>
                            <film_or_detector_model category="CCD">GENERIC CCD</film_or_detector_model>
                            <digitization_details>
                                <sampling_interval units="&#181;m">15</sampling_interval>
                            </digitization_details>
                            <number_real_images>315</number_real_images>
                            <average_electron_dose_per_image units="e/&#8491;^2">20</average_electron_dose_per_image>
                            <bits_per_pixel>16.</bits_per_pixel>
                        </image_recording>
                    </image_recording_list>
                    <specimen_holder>Eucentric</specimen_holder>
                </single_particle_microscopy>
            </microscopy_list>
            <singleparticle_processing image_processing_id="1">
                <ctf_correction>
                    <details>Each particle</details>
                </ctf_correction>
                <final_reconstruction>
                    <algorithm>OTHER</algorithm>
                    <resolution res_type="BY AUTHOR" units="&#8491;">8.2</resolution>
                    <resolution_method>FSC 0.5 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>EMAN</name>
                        </software>
                    </software_list>
                    <number_images_used>24604</number_images_used>
                </final_reconstruction>
                <final_two_d_classification>
                    <number_classes>180</number_classes>
                </final_two_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="11665">
        <file>emd_5290.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>144</col>
            <row>144</row>
            <sec>144</sec>
        </dimensions>
        <origin>
            <col>-72</col>
            <row>-72</row>
            <sec>-72</sec>
        </origin>
        <spacing>
            <x>144</x>
            <y>144</y>
            <z>144</z>
        </spacing>
        <cell>
            <a units="&#8491;">210.24</a>
            <b units="&#8491;">210.24</b>
            <c units="&#8491;">210.24</c>
            <alpha units="deg">90</alpha>
            <beta units="deg">90</beta>
            <gamma units="deg">90</gamma>
        </cell>
        <axis_order>
            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
        </axis_order>
        <statistics>
            <minimum>-0.0256609</minimum>
            <maximum>1.50396</maximum>
            <average>0.163268</average>
            <std>0.378047</std>
        </statistics>
        <pixel_spacing>
            <x units="&#8491;">1.46</x>
            <y units="&#8491;">1.46</y>
            <z units="&#8491;">1.46</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>1.18</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <annotation_details>This is a cryo-EM map of DegQ 12-mer.</annotation_details>
        <details>::::EMDATABANK.org::::EMD-5290::::</details>
    </map>
</emd>