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    <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>2012-02-16</deposition>
            <header_release>2012-02-23</header_release>
            <map_release>2012-03-01</map_release>
            <update>2013-02-27</update>
        </key_dates>
        <title>Subtomogram average of type VI secretion system (T6SS) sheath</title>
        <authors_list>
            <author>Basler M</author>
            <author>Pilhofer M</author>
            <author>Henderson GP</author>
            <author>Jensen GJ</author>
            <author>Mekalanos JJ</author>
        </authors_list>
        <keywords>type VI secretion system, T6SS, bacterial secretion, sheath, VipA, VipB, VipAB</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Basler M</author>
                    <author order="2">Pilhofer M</author>
                    <author order="3">Henderson GP</author>
                    <author order="4">Jensen GJ</author>
                    <author order="5">Mekalanos JJ</author>
                    <title>Type VI secretion requires a dynamic contractile phage tail-like structure.</title>
                    <journal>NATURE</journal>
                    <volume>483</volume>
                    <first_page>182</first_page>
                    <last_page>186</last_page>
                    <year>2012</year>
                    <external_references type="PUBMED">22367545</external_references>
                    <external_references type="DOI">doi:10.1038/nature10846</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
    </crossreferences>
    <sample>
        <name>Type VI Secretion System sheath</name>
        <supramolecule_list>
            <sample_supramolecule supramolecule_id="1000">
                <name>Type VI Secretion System sheath</name>
                <number_unique_components>1</number_unique_components>
            </sample_supramolecule>
            <organelle_or_cellular_component_supramolecule supramolecule_id="1">
                <name>Type VI Secretion Sheath</name>
                <recombinant_exp_flag>false</recombinant_exp_flag>
                <natural_source database="NCBI">
                    <organism ncbi="666">Vibrio cholerae</organism>
                    <strain>2740-80</strain>
                </natural_source>
                <recombinant_expression database="NCBI" />
            </organelle_or_cellular_component_supramolecule>
        </supramolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>subtomogramAveraging</method>
            <specimen_preparation_list>
                <subtomogram_averaging_preparation preparation_id="1">
                    <buffer>
                        <ph>7.4</ph>
                        <details>50mM Tris, 150mM NaCl</details>
                    </buffer>
                    <grid>
                        <details>R 2/2 Quantifoil</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>OTHER</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <instrument>FEI VITROBOT MARK II</instrument>
                    </vitrification>
                </subtomogram_averaging_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <subtomogram_averaging_microscopy microscopy_id="1">
                    <microscope>FEI POLARA 300</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>
                    <nominal_magnification>34000.0</nominal_magnification>
                    <specimen_holder_model>GATAN LIQUID NITROGEN</specimen_holder_model>
                    <specialist_optics>
                        <energy_filter>
                            <name>GIF Gatan</name>
                        </energy_filter>
                    </specialist_optics>
                    <date>2011-05-30</date>
                    <image_recording_list>
                        <image_recording>
                            <film_or_detector_model category="CCD">GATAN ULTRASCAN 1000 (2k x 2k)</film_or_detector_model>
                        </image_recording>
                    </image_recording_list>
                    <tilt_series>
                        <axis1>
                            <min_angle units="deg">-60</min_angle>
                            <max_angle units="deg">60</max_angle>
                        </axis1>
                    </tilt_series>
                </subtomogram_averaging_microscopy>
            </microscopy_list>
            <subtomogram_averaging_processing image_processing_id="1">
                <details>Average number of tilts used in the 3D reconstructions: 120. Average tomographic tilt angle increment: 2.</details>
                <final_reconstruction>
                    <algorithm>OTHER</algorithm>
                    <software_list>
                        <software>
                            <name>ETOMO,RAPTOR</name>
                        </software>
                    </software_list>
                </final_reconstruction>
            </subtomogram_averaging_processing>
        </structure_determination>
    </structure_determination_list>
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            <row>70</row>
            <sec>100</sec>
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            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
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            <minimum>-209.621429440000014</minimum>
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            <y units="&#8491;">6.3</y>
            <z units="&#8491;">6.3</z>
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        <contour_list>
            <contour primary="true">
                <level>-100.0</level>
                <source>EMDB</source>
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        <annotation_details>electron cryotomography, sub-tomogram average</annotation_details>
        <details>::::EMDATABANK.org::::EMD-2045::::</details>
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