<?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_3/emdb.xsd" version="3.0.9.3" emdb_id="EMD-14630">
    <admin>
        <current_status>
            <date>2024-07-24</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2022-03-28</deposition>
            <header_release>2023-01-18</header_release>
            <map_release>2023-01-18</map_release>
            <update>2024-07-24</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Agence Nationale de la Recherche (ANR)</funding_body>
                <code>ANR-14-CE09-0003-01</code>
                <country>France</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Agence Nationale de la Recherche (ANR)</funding_body>
                <code>ANR-19-CE11-0002-02</code>
                <country>France</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Agence Nationale de la Recherche (ANR)</funding_body>
                <code>ANR-17-EURE-0003</code>
                <country>France</country>
            </grant_reference>
        </grant_support>
        <title>Membrane-bound CHMP2A-CHMP3 filament (430 Angstrom diameter)</title>
        <authors_list>
            <author>Azad K</author>
            <author>Desfosses A</author>
            <author>Effantin G</author>
            <author>Schoehn G</author>
            <author>Weissenhorn W</author>
        </authors_list>
        <keywords>Cryo Electron Microscopy, Helical Reconstruction, Membrane-bound CHMP2A-CHMP3 filament, Negative-curvature membrane, CYTOSOLIC PROTEIN</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Azad K</author>
                    <author order="2">Guilligay D</author>
                    <author order="3">Boscheron C</author>
                    <author order="4">Maity S</author>
                    <author order="5">De Franceschi N</author>
                    <author order="6">Sulbaran G</author>
                    <author order="7">Effantin G</author>
                    <author order="8">Wang H</author>
                    <author order="9">Kleman JP</author>
                    <author order="10">Bassereau P</author>
                    <author order="11">Schoehn G</author>
                    <author order="12">Roos WH</author>
                    <author order="13">Desfosses A</author>
                    <author order="14">Weissenhorn W</author>
                    <title>Structural basis of CHMP2A-CHMP3 ESCRT-III polymer assembly and membrane cleavage.</title>
                    <journal_abbreviation>Nat.Struct.Mol.Biol.</journal_abbreviation>
                    <country>US</country>
                    <volume>30</volume>
                    <first_page>81</first_page>
                    <last_page>90</last_page>
                    <year>2023</year>
                    <external_references type="PUBMED">36604498</external_references>
                    <external_references type="DOI">doi:10.1038/s41594-022-00867-8</external_references>
                    <external_references type="ISSN">1545-9985</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>7zcg</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Membrane-bound CHMP2A-CHMP3 filament (430 Angstrom Diameter) cryo-EM map</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Membrane-bound CHMP2A-CHMP3 filament (430 Angstrom Diameter) cryo-EM map</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Charged multivesicular body protein 2a</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.017305488</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>RKTPEELLRQNQRALNRAMRELDRERQKLETQEKKIIADIKKMAKQGQMDAVRIMAKDLVRTRRYVRKFVLMRANIQAVS
LKIQTLKSNNSMAQAMKGVTKAMGTMNRQLKLPQIQKIMMEFERQAEIMDMKEEMMNDAIDDAMGDE</string>
                    <external_references type="UNIPROTKB">O43633</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Charged multivesicular body protein 3</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.018429684</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>PPKELVNEWSLKIRKEMRVVDRQIRDIQREEEKVKRSVKDAAKKGQKDVCIVLAKEMIRSRKAVSKLYASKAHMNSVLMG
MKNQLAVLRVAGSLQKSTEVMKAMQSLVKIPEIQATMRELSKEMMKAGIIEEMLEDTFESMDDQEEMEEEAEMEIDRIL</string>
                    <external_references type="UNIPROTKB">Q9Y3E7</external_references>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>helical</method>
            <aggregation_state>filament</aggregation_state>
            <specimen_preparation_list>
                <helical_preparation preparation_id="1">
                    <concentration units="mg/mL">1</concentration>
                    <buffer>
                        <ph>7.4</ph>
                        <component>
                            <concentration units="mM">25.0</concentration>
                            <formula>C4H11NO3</formula>
                            <name>Tris</name>
                        </component>
                        <component>
                            <concentration units="mM">25.0</concentration>
                            <formula>NaCl</formula>
                            <name>Sodium Chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">1.0</concentration>
                            <formula>C2H6OS</formula>
                            <name>Beta-mercaptoethanol</name>
                        </component>
                    </buffer>
                    <grid>
                        <model>Quantifoil R1.2/1.3</model>
                        <material>COPPER</material>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">293.15</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                    </vitrification>
                </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>
                    <nominal_defocus_min units="µm">0.5</nominal_defocus_min>
                    <nominal_defocus_max units="µm">1.5</nominal_defocus_max>
                    <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 K2 SUMMIT (4k x 4k)</film_or_detector_model>
                            <digitization_details/>
                            <number_real_images>5028</number_real_images>
                            <average_exposure_time units="s">5.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">24.0</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>
                <final_reconstruction>
                    <number_classes_used>1</number_classes_used>
                    <applied_symmetry>
                        <helical_parameters>
                            <delta_z units="Å">2.742</delta_z>
                            <delta_phi units="deg">54.374</delta_phi>
                            <axial_symmetry>C2</axial_symmetry>
                        </helical_parameters>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">3.3</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3</version>
                        </software>
                    </software_list>
                    <number_images_used>25353</number_images_used>
                </final_reconstruction>
                <segment_selection>
                    <number_selected>89122</number_selected>
                </segment_selection>
                <startup_model type_of_model="NONE"/>
                <final_angle_assignment>
                    <type>NOT APPLICABLE</type>
                </final_angle_assignment>
            </helical_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="1811940">
        <file>emd_14630.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>768</col>
            <row>768</row>
            <sec>768</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>768</x>
            <y>768</y>
            <z>768</z>
        </spacing>
        <cell>
            <a units="Å">807.93604</a>
            <b units="Å">807.93604</b>
            <c units="Å">807.93604</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>-0.022476744</minimum>
            <maximum>0.03742122</maximum>
            <average>0.0000073798415</average>
            <std>0.00068143103</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.052</x>
            <y units="Å">1.052</y>
            <z units="Å">1.052</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.008</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-14630::::</label>
        <annotation_details>Membrane-bound CHMP2A-CHMP3 filament (430 Angstrom diameter)</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>6TZ4</access_code>
                    <chain>
                        <source_name>PDB</source_name>
                        <initial_model_type>experimental model</initial_model_type>
                    </chain>
                </initial_model>
                <refinement_space>REAL</refinement_space>
            </modelling>
        </modelling_list>
        <half_map_list>
            <half_map format="CCP4" size_kbytes="1811940">
                <file>emd_14630_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>768</col>
                    <row>768</row>
                    <sec>768</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>768</x>
                    <y>768</y>
                    <z>768</z>
                </spacing>
                <cell>
                    <a units="Å">807.93604</a>
                    <b units="Å">807.93604</b>
                    <c units="Å">807.93604</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>-0.013661013</minimum>
                    <maximum>0.020646395</maximum>
                    <average>0.000065097374</average>
                    <std>0.0013353004</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.052</x>
                    <y units="Å">1.052</y>
                    <z units="Å">1.052</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-14630::::</label>
                <annotation_details>Membrane-bound CHMP2A-CHMP3 filament (430 Angstrom diameter) half map 1</annotation_details>
            </half_map>
            <half_map format="CCP4" size_kbytes="1811940">
                <file>emd_14630_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>768</col>
                    <row>768</row>
                    <sec>768</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>768</x>
                    <y>768</y>
                    <z>768</z>
                </spacing>
                <cell>
                    <a units="Å">807.93604</a>
                    <b units="Å">807.93604</b>
                    <c units="Å">807.93604</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>-0.012663586</minimum>
                    <maximum>0.021230882</maximum>
                    <average>0.00008082963</average>
                    <std>0.0013385818</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.052</x>
                    <y units="Å">1.052</y>
                    <z units="Å">1.052</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-14630::::</label>
                <annotation_details>Membrane-bound CHMP2A-CHMP3 filament (430 Angstrom diameter) half map 2</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>
