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        <current_status>
            <date>2026-05-06</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
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                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
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                        <provider>REPOSITORY</provider>
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        </revision_history>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2025-06-11</deposition>
            <header_release>2026-04-15</header_release>
            <map_release>2026-04-15</map_release>
            <update>2026-05-06</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Biotechnology and Biological Sciences Research Council (BBSRC)</funding_body>
                <code>BB/R009759/2</code>
                <country>United Kingdom</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Human Frontier Science Program (HFSP)</funding_body>
                <code>RGY0080/2021</code>
                <country>France</country>
            </grant_reference>
        </grant_support>
        <title>Polar sheathed flagella tips in Vibrio alginolyticus</title>
        <authors_list>
            <author>Qin K</author>
            <author>Einenkel R</author>
            <author>Zhao W</author>
            <author>Atherton J</author>
            <author>Erhardt M</author>
            <author>Bergeron JRC</author>
        </authors_list>
        <keywords>flagellar sheath, flagellin, filament, Vibrio alginolyticus, STRUCTURAL PROTEIN</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Qin K</author>
                    <author ORCID="0000-0002-6987-6225" order="2">Einenkel R</author>
                    <author ORCID="0009-0004-6600-8213" order="3">Zhao W</author>
                    <author order="4">Kuhne C</author>
                    <author ORCID="0000-0002-6362-2347" order="5">Atherton J</author>
                    <author ORCID="0000-0001-6292-619X" order="6">Erhardt M</author>
                    <author ORCID="0000-0002-2841-9511" order="7">Bergeron JRC</author>
                    <title>The structure of the Vibrio alginolyticus flagellar filament suggests molecular mechanism for the rotation of sheathed flagella.</title>
                    <journal_abbreviation>Nat Commun</journal_abbreviation>
                    <country>UK</country>
                    <volume>17</volume>
                    <year>2026</year>
                    <external_references type="PUBMED">42026045</external_references>
                    <external_references type="DOI">doi:10.1038/s41467-026-71203-7</external_references>
                    <external_references type="ISSN">2041-1723</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <other_db_list>
            <db_reference>
                <db_name>EMDB</db_name>
                <accession_id>EMD-53992</accession_id>
                <content_type>associated EM volume</content_type>
            </db_reference>
        </other_db_list>
    </crossreferences>
    <sample>
        <name>Polar flagella in Vibrio alginolyticus</name>
        <supramolecule_list>
            <organelle_or_cellular_component_supramolecule supramolecule_id="1">
                <name>Polar flagella in Vibrio alginolyticus</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="663">Vibrio alginolyticus</organism>
                </natural_source>
            </organelle_or_cellular_component_supramolecule>
        </supramolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>tomography</method>
            <aggregation_state>filament</aggregation_state>
            <specimen_preparation_list>
                <tomography_preparation preparation_id="1">
                    <buffer>
                        <ph>8.0</ph>
                    </buffer>
                    <grid>
                        <material>COPPER</material>
                        <mesh>200</mesh>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">95</chamber_humidity>
                        <chamber_temperature units="K">278</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                    </vitrification>
                    <sectioning>
                        <other_sectioning>NO SECTIONING</other_sectioning>
                    </sectioning>
                </tomography_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <tomography_microscopy microscopy_id="1">
                    <microscope>TFS 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>
                    <nominal_defocus_min units="µm">3.499</nominal_defocus_min>
                    <nominal_defocus_max units="µm">3.5</nominal_defocus_max>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K3 (6k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/Å^2">40.0</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
                </tomography_microscopy>
            </microscopy_list>
            <tomography_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <final_reconstruction>
                    <algorithm>BACK PROJECTION</algorithm>
                    <number_images_used>21</number_images_used>
                </final_reconstruction>
                <ctf_correction>
                    <type>PHASE FLIPPING AND AMPLITUDE CORRECTION</type>
                </ctf_correction>
            </tomography_processing>
        </structure_determination>
    </structure_determination_list>
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        <file>emd_53992.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>1000</col>
            <row>1000</row>
            <sec>400</sec>
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        <origin>
            <col>0</col>
            <row>0</row>
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        <spacing>
            <x>1000</x>
            <y>1000</y>
            <z>400</z>
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        <cell>
            <a units="Å">8400.0</a>
            <b units="Å">8400.0</b>
            <c units="Å">3359.9998</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>
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        <statistics>
            <minimum>-138.663180000000011</minimum>
            <maximum>94.546099999999996</maximum>
            <average>1.2544593</average>
            <std>18.076498000000001</std>
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        <pixel_spacing>
            <x units="Å">8.4</x>
            <y units="Å">8.4</y>
            <z units="Å">8.4</z>
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                <source>AUTHOR</source>
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        <label>::::EMDATABANK.org::::EMD-53992::::</label>
        <annotation_details>Polar sheathed flagella tip in flhG mutant of Vibrio alginolyticus</annotation_details>
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