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    <admin>
        <current_status>
            <date>2024-07-10</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2020-09-07</deposition>
            <header_release>2021-08-04</header_release>
            <map_release>2021-08-04</map_release>
            <update>2024-07-10</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>European Union (EU)</funding_body>
                <code>653706</code>
                <country>Germany</country>
            </grant_reference>
        </grant_support>
        <title>Helical structure of PspA</title>
        <authors_list>
            <author>Junglas B</author>
            <author>Huber ST</author>
        </authors_list>
        <keywords>PspA, IM30, Vipp1, ESCRT-III, helical reconstruction, Cryo-EM, membrane remodeling, LIPID BINDING PROTEIN</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Junglas B</author>
                    <author order="2">Huber ST</author>
                    <author order="3">Heidler T</author>
                    <author order="4">Schlosser L</author>
                    <author order="5">Mann D</author>
                    <author order="6">Hennig R</author>
                    <author order="7">Clarke M</author>
                    <author order="8">Hellmann N</author>
                    <author order="9">Schneider D</author>
                    <author order="10">Sachse C</author>
                    <title>PspA adopts an ESCRT-III-like fold and remodels bacterial membranes.</title>
                    <journal_abbreviation>Cell</journal_abbreviation>
                    <volume>184</volume>
                    <first_page>3674</first_page>
                    <last_page>3688.e18</last_page>
                    <year>2021</year>
                    <external_references type="PUBMED">34166616</external_references>
                    <external_references type="DOI">doi:10.1016/j.cell.2021.05.042</external_references>
                    <external_references type="ISSN">1097-4172</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>7abk</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Helical filament assembly of PspA</name>
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            <organelle_or_cellular_component_supramolecule supramolecule_id="1">
                <name>Helical filament assembly of PspA</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="1111708">Synechocystis sp. (strain PCC 6803 / Kazusa)</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.025</theoretical>
                </molecular_weight>
            </organelle_or_cellular_component_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Chloroplast membrane-associated 30 kD protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="1111708">Synechocystis sp. (strain PCC 6803 / Kazusa)</organism>
                    <strain>PCC 6803 / Kazusa</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.028260815999999998</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>MGHHHHHHHHHSSGHIDDDDKHMELFNRVGRVLKSQLTHWQQQQEAPEDLLERLLGEMELELIELRRALAQTIATFKSTE
RQRDAQQLIAQRWYEKAQAALDRGNEQLAREALGQRQSYQSHTEALGKSLGEQRALVEQVRGQLQKLERKYLELKSQKNL
YLARLKSAIAAQKIEEIAGNLDNASASSLFERIETKILELEAERELLNPPPSPLDKKFEQWEEQQAVEATLAAMKARRSL
PPPSS</string>
                    <external_references type="UNIPROTKB">P74717</external_references>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
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            <method>helical</method>
            <aggregation_state>filament</aggregation_state>
            <specimen_preparation_list>
                <helical_preparation preparation_id="1">
                    <concentration units="mg/mL">7.9</concentration>
                    <buffer>
                        <ph>7.6</ph>
                        <component>
                            <concentration units="mM">10.0</concentration>
                            <formula>NaH2PO4</formula>
                            <name>Sodium Phosphate</name>
                        </component>
                    </buffer>
                    <grid>
                        <model>Quantifoil R1.2/1.3</model>
                        <material>COPPER</material>
                        <mesh>200</mesh>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                        </pretreatment>
                        <details>Pelco easiGlow</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">90</chamber_humidity>
                        <chamber_temperature units="K">283.15</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                        <details>Quantifoil R1.2/1.3 Cu200 grids. </details>
                    </vitrification>
                </helical_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <helical_microscopy microscopy_id="1">
                    <microscope>TFS TALOS</microscope>
                    <illumination_mode>FLOOD BEAM</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">200</acceleration_voltage>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">0.2</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.3000000000000003</nominal_defocus_max>
                    <nominal_magnification>100000.0</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 Bioquantum</name>
                        </energy_filter>
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                            <film_or_detector_model>GATAN K3 BIOQUANTUM (6k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/Å^2">50.0</average_electron_dose_per_image>
                        </image_recording>
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            </microscopy_list>
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                <image_recording_id>1</image_recording_id>
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                    <applied_symmetry>
                        <helical_parameters>
                            <delta_z units="Å">2.94</delta_z>
                            <delta_phi units="deg">35.32</delta_phi>
                            <axial_symmetry>C1</axial_symmetry>
                        </helical_parameters>
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                    <algorithm>FOURIER SPACE</algorithm>
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                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
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