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            <date>2025-04-02</date>
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        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2019-09-06</deposition>
            <header_release>2019-10-02</header_release>
            <map_release>2020-05-13</map_release>
            <update>2025-04-02</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)</funding_body>
                <code>R01GM071940</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)</funding_body>
                <code>AI094386</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)</funding_body>
                <code>GM077190</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Science Foundation (NSF, United States)</funding_body>
                <code>XSEDE MCB140140</code>
                <country>United States</country>
            </grant_reference>
        </grant_support>
        <title>Actin phalloidin at BeFx state</title>
        <authors_list>
            <author>Das S</author>
            <author>Ge P</author>
        </authors_list>
        <keywords>Actin, phalloidin, beryllium fluoride, STRUCTURAL PROTEIN</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Das S</author>
                    <author order="2">Ge P</author>
                    <author order="3">Oztug Durer ZA</author>
                    <author order="4">Grintsevich EE</author>
                    <author order="5">Zhou ZH</author>
                    <author order="6">Reisler E</author>
                    <title>D-loop Dynamics and Near-Atomic-Resolution Cryo-EM Structure of Phalloidin-Bound F-Actin.</title>
                    <journal_abbreviation>Structure</journal_abbreviation>
                    <country>UK</country>
                    <volume>28</volume>
                    <first_page>586</first_page>
                    <year>2020</year>
                    <external_references type="PUBMED">32348747</external_references>
                    <external_references type="DOI">doi:10.1016/j.str.2020.04.004</external_references>
                    <external_references type="ISSN">0969-2126</external_references>
                    <external_references type="CSD">2005</external_references>
                    <external_references type="ASTM">STRUE6</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>6u96</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Actin phalloidin, BeFx state</name>
        <supramolecule_list>
            <organelle_or_cellular_component_supramolecule supramolecule_id="1">
                <name>Actin phalloidin, BeFx state</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="9986">Oryctolagus cuniculus</organism>
                </natural_source>
            </organelle_or_cellular_component_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Actin, alpha skeletal muscle</name>
                <natural_source database="NCBI">
                    <organism ncbi="9986">Oryctolagus cuniculus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.042109972999999995</theoretical>
                </molecular_weight>
                <number_of_copies>5</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MCDEDETTALVCDNGSGLVKAGFAGDDAPRAVFPSIVGRPRHQGVMVGMGQKDSYVGDEAQSKRGILTLKYPIE(HIC)G
IITNWDDMEKIWHHTFYNELRVAPEEHPTLLTEAPLNPKANREKMTQIMFETFNVPAMYVAIQAVLSLYASGRTTGIVLD
SGDGVTHNVPIYEGYALPHAIMRLDLAGRDLTDYLMKILTERGYSFVTTAEREIVRDIKEKLCYVALDFENEMATAASSS
SLEKSYELPDGQVITIGNERFRCPETLFQPSFIGMESAGIHETTYNSIMKCDIDIRKDLYANNVMSGGTTMYPGIADRMQ
KEITALAPSTMKIKIIAPPERKYSVWIGGSILASLSTFQQMWITKQEYDEAGPSIVHRKCF</string>
                    <external_references type="UNIPROTKB">P68135</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>PHALLOIDIN Derivative</name>
                <natural_source database="NCBI">
                    <organism ncbi="32630">synthetic construct</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.000808899</theoretical>
                </molecular_weight>
                <number_of_copies>5</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>(EEP)A(ALO)C(HYP)AW</string>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="3">
                <name>ADENOSINE-5'-DIPHOSPHATE</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000427201</theoretical>
                </molecular_weight>
                <number_of_copies>5</number_of_copies>
                <formula>ADP</formula>
            </ligand>
        </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">
                    <buffer>
                        <ph>7.4</ph>
                        <component>
                            <concentration units="mM">10.0</concentration>
                            <name>HEPES</name>
                        </component>
                        <component>
                            <concentration units="mM">130.0</concentration>
                            <formula>NaCl</formula>
                            <name>Salt</name>
                        </component>
                        <component>
                            <concentration units="mM">0.2</concentration>
                            <formula>CaCl2</formula>
                            <name>Calcium Chloride</name>
                        </component>
                        <details>pH7.4, 10mM Tris, 50mM KCl, 1 mM MgC2, 0.2mM CaCl2, 1mM ATP, 1mM DTT, 0.2mM EGTA, 0.2mM BeCl2, 5mM NaF</details>
                    </buffer>
                    <grid>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY ARRAY</film_topology>
                        </support_film>
                        <details>unspecified</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">295</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>
                    <c2_aperture_diameter units="µm">70.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">3.0</nominal_defocus_min>
                    <calibrated_defocus_min units="µm">2.2</calibrated_defocus_min>
                    <nominal_defocus_max units="µm">3.0</nominal_defocus_max>
                    <calibrated_defocus_max units="µm">4.2</calibrated_defocus_max>
                    <nominal_magnification>130000.0</nominal_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <temperature>
                        <temperature_min units="K">80.0</temperature_min>
                        <temperature_max units="K">81.0</temperature_max>
                    </temperature>
                    <alignment_procedure>
                        <coma_free/>
                    </alignment_procedure>
                    <specialist_optics>
                        <energy_filter>
                            <name>GIF Quantum LS</name>
                        </energy_filter>
                    </specialist_optics>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K2 QUANTUM (4k x 4k)</film_or_detector_model>
                            <detector_mode>COUNTING</detector_mode>
                            <digitization_details>
                                <frames_per_image>3-12</frames_per_image>
                            </digitization_details>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>5874</number_real_images>
                            <average_exposure_time units="s">8.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">80.0</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>
                    <applied_symmetry>
                        <helical_parameters>
                            <delta_z units="Å">29.508839</delta_z>
                            <delta_phi units="deg">-166.967625</delta_phi>
                            <axial_symmetry>C1</axial_symmetry>
                        </helical_parameters>
                    </applied_symmetry>
                    <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</version>
                        </software>
                    </software_list>
                    <number_images_used>181626</number_images_used>
                </final_reconstruction>
                <segment_selection>
                    <number_selected>214555</number_selected>
                    <software_list>
                        <software>
                            <name>EMAN</name>
                            <version>1.8</version>
                        </software>
                    </software_list>
                </segment_selection>
                <startup_model type_of_model="OTHER">
                    <details>An old, unpublished, low resolution F-actin map</details>
                </startup_model>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </helical_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="23593">
        <file>emd_20694.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>360</sec>
        </dimensions>
        <origin>
            <col>-64</col>
            <row>-64</row>
            <sec>-180</sec>
        </origin>
        <spacing>
            <x>128</x>
            <y>128</y>
            <z>360</z>
        </spacing>
        <cell>
            <a units="Å">136.96</a>
            <b units="Å">136.96</b>
            <c units="Å">385.2</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>-0.029988598</minimum>
            <maximum>0.088445336</maximum>
            <average>0.0020726256</average>
            <std>0.0068329675</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.07</x>
            <y units="Å">1.07</y>
            <z units="Å">1.07</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.03</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-20694::::</label>
        <annotation_details>Actin phalloidin at BeFx state</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <refinement_protocol>AB INITIO MODEL</refinement_protocol>
                <refinement_space>REAL</refinement_space>
            </modelling>
        </modelling_list>
    </interpretation>
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