<?xml version="1.0" encoding="UTF-8"?>
<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_9_2/emdb.xsd" version="3.0.9.2" emdb_id="EMD-6876">
    <admin>
        <current_status>
            <date>2024-03-27</date>
            <code>REL</code>
            <processing_site>PDBj</processing_site>
        </current_status>
        <sites>
            <deposition>PDBj</deposition>
            <last_processing>PDBj</last_processing>
        </sites>
        <key_dates>
            <deposition>2017-12-26</deposition>
            <header_release>2019-02-13</header_release>
            <map_release>2019-02-13</map_release>
            <update>2024-03-27</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>JSPS Kakenhi</funding_body>
                <code>17K17085</code>
                <country>Japan</country>
            </grant_reference>
            <grant_reference>
                <funding_body>SPRING8</funding_body>
                <code>Proposal No. 2014B1341</code>
                <country>Japan</country>
            </grant_reference>
        </grant_support>
        <title>Cryo-EM structure of Methanoccus maripaludis archaellum</title>
        <authors_list>
            <author>Meshcheryakov VA</author>
            <author>Shibata S</author>
            <author>Schreiber MT</author>
            <author>Villar-Briones A</author>
            <author>Jarrell KF</author>
            <author>Aizawa S</author>
            <author>Wolf M</author>
            <author>Wolf M</author>
            <author>Kurumizaka H</author>
        </authors_list>
        <keywords>Archaellum, archea, flagellum, metal binding, motility, helical, PROTEIN FIBRIL</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Meshcheryakov VA</author>
                    <author order="2">Shibata S</author>
                    <author order="3">Schreiber MT</author>
                    <author order="4">Villar-Briones A</author>
                    <author order="5">Jarrell KF</author>
                    <author order="6">Aizawa SI</author>
                    <author ORCID="0000-0001-8480-0918" order="7">Wolf M</author>
                    <title>High-resolution archaellum structure reveals a conserved metal-binding site.</title>
                    <journal_abbreviation>Embo Rep.</journal_abbreviation>
                    <country>UK</country>
                    <volume>20</volume>
                    <year>2019</year>
                    <external_references type="PUBMED">30898768</external_references>
                    <external_references type="DOI">doi:10.15252/embr.201846340</external_references>
                    <external_references type="ISSN">1469-3178</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>5z1l</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>M.maripaludis archaellin FlaB1 filament</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>M.maripaludis archaellin FlaB1 filament</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="267377">Methanococcus maripaludis S2</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Flagellin</name>
                <natural_source database="NCBI">
                    <organism ncbi="267377">Methanococcus maripaludis (strain S2 / LL)</organism>
                    <strain>S2 / LL</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.021639359</theoretical>
                </molecular_weight>
                <number_of_copies>18</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MKITEFMKSKKGASGIGTLIVFIAMVLVAAVAASVLINTSGFLQQKASTTGKESTEQVASGLLINGITGSVGTSDVKLLA
IYLAPNAGSSAIDLAQTKVMLDYNGKSVVLGYGGNQDMSSGNSSVFSNDTGATATTFQVNILQDYDDSAVDNAVINKGDA
VALIVDVNASFAGEIPERTAISGKVQPEFGAPGVISFTTPASYTTTLVELQ</string>
                    <external_references type="UNIPROTKB">Q6LWP3</external_references>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>helical</method>
            <aggregation_state>particle</aggregation_state>
            <specimen_preparation_list>
                <helical_preparation preparation_id="1">
                    <concentration units="mg/mL">.8</concentration>
                    <buffer>
                        <ph>7.0</ph>
                        <component>
                            <formula>H2O</formula>
                            <name>Water</name>
                        </component>
                    </buffer>
                    <grid>
                        <model>Quantifoil R1.2/1.3</model>
                        <material>COPPER</material>
                        <mesh>200</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY</film_topology>
                            <film_thickness>100.0</film_thickness>
                        </support_film>
                        <pretreatment>
                            <type>PLASMA CLEANING</type>
                            <time units="s">15</time>
                            <atmosphere>OTHER</atmosphere>
                            <pressure units="kPa">9.33</pressure>
                        </pretreatment>
                        <details>Gatan Solarus</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">289</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                        <details>3 second blot, 3.5uL. </details>
                    </vitrification>
                    <details>sample was monodisperse</details>
                </helical_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <helical_microscopy microscopy_id="1">
                    <microscope>FEI TITAN 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">50.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">-1.5</nominal_defocus_min>
                    <calibrated_defocus_min units="µm">-1.5</calibrated_defocus_min>
                    <nominal_defocus_max units="µm">-2.5</nominal_defocus_max>
                    <calibrated_defocus_max units="µm">-2.5</calibrated_defocus_max>
                    <nominal_magnification>105000.0</nominal_magnification>
                    <calibrated_magnification>47619.0</calibrated_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <temperature>
                        <temperature_min units="K">77.0</temperature_min>
                        <temperature_max units="K">100.0</temperature_max>
                    </temperature>
                    <alignment_procedure>
                        <coma_free>
                            <residual_tilt units="mrad">0.1</residual_tilt>
                        </coma_free>
                    </alignment_procedure>
                    <specialist_optics>
                        <energy_filter>
                            <name>GIF Quantum LS</name>
                            <lower_energy_threshold units="eV">0</lower_energy_threshold>
                            <upper_energy_threshold units="eV">20</upper_energy_threshold>
                        </energy_filter>
                    </specialist_optics>
                    <details>nanoprobe, parallel beam illumination</details>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K2 SUMMIT (4k x 4k)</film_or_detector_model>
                            <detector_mode>SUPER-RESOLUTION</detector_mode>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">7676</width>
                                    <height units="pixel">7420</height>
                                </dimensions>
                                <frames_per_image>1-48</frames_per_image>
                            </digitization_details>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>2000</number_real_images>
                            <average_exposure_time units="s">12.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">96.0</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>frame alignment and integration with motioncor2 incl. dose weighting and 2x Fourier cropping</details>
                <final_reconstruction>
                    <number_classes_used>100</number_classes_used>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">4.0</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>SPRING</name>
                            <version>0.84</version>
                        </software>
                    </software_list>
                    <number_images_used>110747</number_images_used>
                </final_reconstruction>
                <segment_selection>
                    <number_selected>110747</number_selected>
                    <software_list>
                        <software>
                            <name>EMAN2</name>
                            <version>2.1</version>
                            <processing_details>e2helixboxer.py</processing_details>
                        </software>
                    </software_list>
                </segment_selection>
                <startup_model type_of_model="NONE"/>
                <final_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing/>
                    <software_list>
                        <software>
                            <name>SPRING</name>
                            <version>0.84</version>
                        </software>
                    </software_list>
                    <details>segmentrefine3d</details>
                </final_angle_assignment>
            </helical_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="8389">
        <file>emd_6876.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>128</col>
            <row>128</row>
            <sec>128</sec>
        </dimensions>
        <origin>
            <col>-64</col>
            <row>-64</row>
            <sec>-64</sec>
        </origin>
        <spacing>
            <x>128</x>
            <y>128</y>
            <z>128</z>
        </spacing>
        <cell>
            <a units="Å">180.48</a>
            <b units="Å">180.48</b>
            <c units="Å">180.48</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>-11.208774</minimum>
            <maximum>14.403278999999999</maximum>
            <average>-0.000000002624336</average>
            <std>0.9999997</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.41</x>
            <y units="Å">1.41</y>
            <z units="Å">1.41</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>3.0</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-6876::::</label>
        <annotation_details>Methanococcus maripaludis archaellum cryo-EM reconstruction</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <refinement_protocol>FLEXIBLE FIT</refinement_protocol>
                <refinement_space>REAL</refinement_space>
            </modelling>
        </modelling_list>
    </interpretation>
</emd>
