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<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://ftp.ebi.ac.uk/pub/databases/em_ebi/emdb_related/emdb-schemas/emdb_schemas/v3/v3_0_11_4/emdb.xsd" version="3.0.11.4" emdb_id="EMD-71717">
    <admin>
        <current_status>
            <date>2026-07-22</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <revision_history>
            <revision version="1.0" date="2026-07-22">
                <change_list>
                    <metadata>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </metadata>
                    <fsc>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </fsc>
                    <half_map part="1">
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </half_map>
                    <half_map part="2">
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </half_map>
                    <image>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </image>
                    <mask part="1">
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </mask>
                    <primary_map>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </primary_map>
                </change_list>
            </revision>
        </revision_history>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2025-07-15</deposition>
            <header_release>2026-07-22</header_release>
            <map_release>2026-07-22</map_release>
            <update>2026-07-22</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Cumming Global Centre for Pandemic Therapeutics, Peter Doherty Institute for Infection and Immunity</funding_body>
                <code>CGCPT00060</code>
            </grant_reference>
            <grant_reference>
                <funding_body>National Health and Medical Research Council (NHMRC, Australia)</funding_body>
                <code>APP1196924</code>
                <country>Australia</country>
            </grant_reference>
        </grant_support>
        <title>Sub-tomogram average of thin flagellar filament from T. denticola</title>
        <authors_list>
            <author ORCID="0000-0001-9844-9751">Paul B</author>
            <author ORCID="0000-0003-3494-4192">Troman LA</author>
            <author ORCID="0000-0002-2227-0330">Ghosal D</author>
        </authors_list>
        <keywords>flagella, periplasmic flagella, bacterial flagella, filament, PROTEIN FIBRIL, spirochete flagella</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="false">
                    <author ORCID="0000-0001-9844-9751" order="1">Paul B</author>
                    <author ORCID="0000-0001-9844-9751" order="2">Troman LA</author>
                    <author ORCID="0000-0001-9844-9751" order="3">Ghosal D</author>
                    <title>Sub-tomogram average of thin flagellar filament from T. denticola</title>
                    <journal_abbreviation>To Be Published</journal_abbreviation>
                    <external_references type="CSD">0353</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-71716</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>Sub-tomogram average of thick flagellar filament of T. denticola</details>
            </emdb_reference>
        </emdb_list>
        <other_db_list>
            <db_reference>
                <db_name>EMDB</db_name>
                <accession_id>EMD-71716</accession_id>
                <content_type>other EM volume</content_type>
                <details>Sub-tomogram average of thick flagellar filament of T. denticola</details>
            </db_reference>
            <db_reference>
                <db_name>EMDB</db_name>
                <accession_id>EMD-71717</accession_id>
                <content_type>associated EM volume</content_type>
            </db_reference>
            <db_reference>
                <db_name>PDB</db_name>
                <accession_id>9PIL</accession_id>
                <content_type>unspecified</content_type>
                <details>Single particle reconstruction of T. denticola thin flagellar filament</details>
            </db_reference>
            <db_reference>
                <db_name>PDB</db_name>
                <accession_id>9PIM</accession_id>
                <content_type>unspecified</content_type>
                <details>Single particle reconstruction of outer curvature of thick flagellar filament from T. denticola</details>
            </db_reference>
            <db_reference>
                <db_name>PDB</db_name>
                <accession_id>9PIN</accession_id>
                <content_type>unspecified</content_type>
                <details>Single particle reconstruction of the astmetric region of the outer sheath of thick flagellar filament from T. denticola</details>
            </db_reference>
        </other_db_list>
    </crossreferences>
    <sample>
        <name>Thin flagellar filaments from T. denticola mono-species biofilm</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Thin flagellar filaments from T. denticola mono-species biofilm</name>
                <parent>0</parent>
                <details>Thin flagellar filaments were averaged from the tomograms obtained from T. denticola mono-species biofilm.</details>
                <natural_source database="NCBI">
                    <organism ncbi="243275">Treponema denticola ATCC 35405</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>helical</method>
            <aggregation_state>cell</aggregation_state>
            <specimen_preparation_list>
                <helical_preparation preparation_id="1">
                    <buffer>
                        <ph>7.0</ph>
                    </buffer>
                    <grid>
                        <model>Quantifoil R2/2</model>
                        <material>COPPER</material>
                        <mesh>200</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">30</time>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">95</chamber_humidity>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                    </vitrification>
                </helical_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <helical_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>
                    <c2_aperture_diameter units="µm">70.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">4.0</nominal_defocus_min>
                    <nominal_defocus_max units="µm">5.0</nominal_defocus_max>
                    <nominal_magnification>52000.0</nominal_magnification>
                    <calibrated_magnification>52000.0</calibrated_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <specialist_optics>
                        <energy_filter>
                            <name>GIF Bioquantum</name>
                            <slit_width units="eV">20</slit_width>
                        </energy_filter>
                    </specialist_optics>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K3 BIOQUANTUM (6k x 4k)</film_or_detector_model>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">5760</width>
                                    <height units="pixel">4092</height>
                                </dimensions>
                            </digitization_details>
                            <average_exposure_time units="s">0.8</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">2.92</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
                </helical_microscopy>
            </microscopy_list>
            <helical_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <details>Images motion corrected using MotionCorr3. Tilt series manually aligned and reconstructed using IMOD.</details>
                <final_reconstruction>
                    <applied_symmetry>
                        <helical_parameters>
                            <delta_z units="Å">28.84</delta_z>
                            <delta_phi units="deg">-33.32</delta_phi>
                            <axial_symmetry>C1</axial_symmetry>
                        </helical_parameters>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">7.2</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>4</version>
                        </software>
                    </software_list>
                    <number_images_used>2892</number_images_used>
                </final_reconstruction>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>IMOD</name>
                            <version>4.11.25</version>
                        </software>
                    </software_list>
                    <type>PHASE FLIPPING ONLY</type>
                </ctf_correction>
                <segment_selection>
                    <number_selected>2988</number_selected>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>4</version>
                        </software>
                    </software_list>
                    <details>Particles picked using Cryolo. Manually curated using EMAN2.</details>
                </segment_selection>
                <startup_model type_of_model="OTHER">
                    <details>3D initial model generation in RELION 4</details>
                </startup_model>
                <final_angle_assignment>
                    <type>NOT APPLICABLE</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>4</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </helical_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="28312">
        <file>emd_71717.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>192</col>
            <row>192</row>
            <sec>192</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>192</x>
            <y>192</y>
            <z>192</z>
        </spacing>
        <cell>
            <a units="Å">307.776</a>
            <b units="Å">307.776</b>
            <c units="Å">307.776</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>-1.3686081</minimum>
            <maximum>1.9442608</maximum>
            <average>0.011961046</average>
            <std>0.110726945</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.603</x>
            <y units="Å">1.603</y>
            <z units="Å">1.603</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.3</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-71717::::</label>
        <annotation_details>Masked map of T. denticola thin flagellar filament</annotation_details>
    </map>
    <interpretation>
        <segmentation_list>
            <segmentation>
                <file>emd_71717_msk_1.map</file>
            </segmentation>
        </segmentation_list>
        <half_map_list>
            <half_map format="CCP4" size_kbytes="28312">
                <file>emd_71717_half_map_1.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>192</col>
                    <row>192</row>
                    <sec>192</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>192</x>
                    <y>192</y>
                    <z>192</z>
                </spacing>
                <cell>
                    <a units="Å">307.776</a>
                    <b units="Å">307.776</b>
                    <c units="Å">307.776</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>-1.597558</minimum>
                    <maximum>1.6721377</maximum>
                    <average>0.008300799</average>
                    <std>0.16631083</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.603</x>
                    <y units="Å">1.603</y>
                    <z units="Å">1.603</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-71717::::</label>
                <annotation_details>Half map of T. denticola thin flagellar filament</annotation_details>
            </half_map>
            <half_map format="CCP4" size_kbytes="28312">
                <file>emd_71717_half_map_2.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>192</col>
                    <row>192</row>
                    <sec>192</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>192</x>
                    <y>192</y>
                    <z>192</z>
                </spacing>
                <cell>
                    <a units="Å">307.776</a>
                    <b units="Å">307.776</b>
                    <c units="Å">307.776</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>-1.5694087</minimum>
                    <maximum>1.7554637</maximum>
                    <average>0.008145183</average>
                    <std>0.16803205</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.603</x>
                    <y units="Å">1.603</y>
                    <z units="Å">1.603</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-71717::::</label>
                <annotation_details>Half map of T. denticola thin flagellar filament</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>
