<?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-11079">
    <admin>
        <current_status>
            <date>2024-05-22</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2020-05-26</deposition>
            <header_release>2020-10-14</header_release>
            <map_release>2020-10-14</map_release>
            <update>2024-05-22</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Medical Research Council (MRC, United Kingdom)</funding_body>
                <code>MC_UP_1201/16</code>
                <country>United Kingdom</country>
            </grant_reference>
            <grant_reference>
                <funding_body>European Research Council (ERC)</funding_body>
                <code>ERC-CoG-648432</code>
                <country>European Union</country>
            </grant_reference>
            <grant_reference>
                <funding_body>German Research Foundation (DFG)</funding_body>
                <code>240245660 - SFB1129</code>
                <country>Germany</country>
            </grant_reference>
        </grant_support>
        <title>Helical reconstruction of influenza A virus M1 in complex with nucleic acid</title>
        <authors_list>
            <author>Xiong X</author>
            <author>Qu K</author>
            <author>Briggs JAG</author>
        </authors_list>
        <keywords>M1, Matrix protein, Influenza virus, Assembly, ribonucleoprotein complex, VIRAL PROTEIN</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Peukes J</author>
                    <author order="2">Xiong X</author>
                    <author order="3">Erlendsson S</author>
                    <author order="4">Qu K</author>
                    <author order="5">Wan W</author>
                    <author order="6">Calder LJ</author>
                    <author order="7">Schraidt O</author>
                    <author order="8">Kummer S</author>
                    <author order="9">Freund SMV</author>
                    <author order="10">Krausslich HG</author>
                    <author order="11">Briggs JAG</author>
                    <title>The native structure of the assembled matrix protein 1 of influenza A virus.</title>
                    <journal_abbreviation>Nature</journal_abbreviation>
                    <country>UK</country>
                    <volume>587</volume>
                    <first_page>495</first_page>
                    <last_page>498</last_page>
                    <year>2020</year>
                    <external_references type="PUBMED">32908308</external_references>
                    <external_references type="DOI">doi:10.1038/s41586-020-2696-8</external_references>
                    <external_references type="ISSN">1476-4687</external_references>
                    <external_references type="CSD">0006</external_references>
                    <external_references type="ASTM">NATUAS</external_references>
                </journal_citation>
            </primary_citation>
            <secondary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0001-8560-7407" order="12">Peukes J</author>
                    <author ORCID="0000-0002-4632-9122" order="13">Xiong X</author>
                    <author ORCID="0000-0002-6378-870X" order="14">Erlendsson S</author>
                    <author order="15">Qu K</author>
                    <author ORCID="0000-0003-2497-3010" order="16">Wan W</author>
                    <author order="17">Calder LJ</author>
                    <author ORCID="0000-0001-8114-3713" order="18">Schraidt O</author>
                    <author ORCID="0000-0003-1010-9889" order="19">Kummer S</author>
                    <author order="20">Freund SMV</author>
                    <author order="21">Krausslich HG</author>
                    <author ORCID="0000-0003-3990-6910" order="22">Briggs JAG</author>
                    <title>The native structure of the full-length, assembled influenza A virus matrix protein, M1.</title>
                    <journal_abbreviation>Biorxiv</journal_abbreviation>
                    <country>US</country>
                    <year>2020</year>
                    <external_references type="DOI">doi:10.1101/2020.06.24.168567</external_references>
                    <external_references type="ISSN">2692-8205</external_references>
                </journal_citation>
            </secondary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>6z5l</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Helical reconstruction of influenza A virus M1 protein in complex with nucleic acid</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Helical reconstruction of influenza A virus M1 protein in complex with nucleic acid</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>Influenza A M1 in complex with 6.4 Kb DNA plasmid</details>
                <natural_source database="NCBI">
                    <organism ncbi="211044">Influenza A virus (strain A/Puerto Rico/8/1934 H1N1)</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.028</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Matrix protein 1</name>
                <natural_source database="NCBI">
                    <organism ncbi="211044">Influenza A virus (strain A/Puerto Rico/8/1934 H1N1)</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.02897143</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>MSLLTEVETYVLSIIPSGPLKAEIAQRLEDVFAGKNTDLEVLMEWLKTRPILSPLTKGILGFVFTLTVPSERGLQRRRFV
QNALNGNGDPNNMDKAVKLYRKLKREITFHGAKEISLSYSAGALASCMGLIYNKMGAVTTEVAFGLVCATCEQIADSQHR
SHRQMVTTTNPLIRHENRMVLASTTAKAMEQMAGSSEQAAEAMEVASQARQMVQAMRTIGTHPSSSAGLKNDLLENLQAY
QKRMGVQMQRFKLEHHHHHH</string>
                    <external_references type="UNIPROTKB">P03485</external_references>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>helical</method>
            <aggregation_state>helicalArray</aggregation_state>
            <specimen_preparation_list>
                <helical_preparation preparation_id="1">
                    <concentration units="mg/mL">0.1</concentration>
                    <buffer>
                        <ph>10.0</ph>
                        <component>
                            <concentration units="mM">150.0</concentration>
                            <formula>NaCl</formula>
                            <name>sodium chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">100.0</concentration>
                            <formula>C2H5NO2</formula>
                            <name>glycine</name>
                        </component>
                    </buffer>
                    <grid>
                        <model>C-flat-2/2</model>
                        <material>COPPER</material>
                        <mesh>200</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY ARRAY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">30</time>
                            <atmosphere>AIR</atmosphere>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">298</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                        <details>sample was applied 3 times each with 30s adsorption time. </details>
                    </vitrification>
                    <details>M1 at 0.1 mg/ml
plasmid DNA at 0.25 mg/ml</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>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">1.0</nominal_defocus_min>
                    <nominal_defocus_max units="µm">3.0</nominal_defocus_max>
                    <nominal_magnification>105000.0</nominal_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <alignment_procedure>
                        <coma_free/>
                    </alignment_procedure>
                    <specialist_optics>
                        <energy_filter>
                            <name>GIF Quantum LS</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>
                            <detector_mode>COUNTING</detector_mode>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>2347</number_real_images>
                            <average_electron_dose_per_image units="e/Å^2">47.1</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">3.08413</delta_z>
                            <delta_phi units="deg">-11.1081</delta_phi>
                            <axial_symmetry>D1</axial_symmetry>
                        </helical_parameters>
                    </applied_symmetry>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">3.8</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.08</version>
                        </software>
                    </software_list>
                    <number_images_used>17984</number_images_used>
                </final_reconstruction>
                <segment_selection>
                    <number_selected>463152</number_selected>
                    <software_list>
                        <software>
                            <name>SPRING</name>
                            <version>0.86</version>
                            <processing_details>Used for selecting segments of similar diameters</processing_details>
                        </software>
                    </software_list>
                    <details>Manual picking</details>
                </segment_selection>
                <startup_model type_of_model="NONE"/>
                <final_angle_assignment>
                    <type>NOT APPLICABLE</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.08</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </helical_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="500001">
        <file>emd_11079.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>500</col>
            <row>500</row>
            <sec>500</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>500</x>
            <y>500</y>
            <z>500</z>
        </spacing>
        <cell>
            <a units="Å">564.0</a>
            <b units="Å">564.0</b>
            <c units="Å">564.0</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>-0.01972976</minimum>
            <maximum>0.052892283</maximum>
            <average>0.0007184917</average>
            <std>0.0037097456</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.128</x>
            <y units="Å">1.128</y>
            <z units="Å">1.128</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.0114</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-11079::::</label>
        <annotation_details>symmetrised helical reconstruction map</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>1AA7</access_code>
                    <chain>
                        <chain_id>A</chain_id>
                        <source_name>PDB</source_name>
                        <initial_model_type>experimental model</initial_model_type>
                    </chain>
                </initial_model>
                <refinement_protocol>AB INITIO MODEL</refinement_protocol>
                <target_criteria>correlation coefficient</target_criteria>
                <refinement_space>REAL</refinement_space>
                <overall_bvalue>37.899999999999999</overall_bvalue>
            </modelling>
        </modelling_list>
        <segmentation_list>
            <segmentation>
                <file>emd_11079_msk_1.map</file>
            </segmentation>
        </segmentation_list>
    </interpretation>
</emd>
