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            <date>2019-04-17</date>
            <code>REL</code>
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            <deposition>2019-02-11</deposition>
            <header_release>2019-02-20</header_release>
            <map_release>2019-02-20</map_release>
            <update>2019-04-17</update>
        </key_dates>
        <title>Defocus in situ tomogram of a Synechocystis cell</title>
        <authors_list>
            <author>Rast A</author>
            <author>Wan W</author>
            <author>Pfeffer S</author>
            <author>Engel BD</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Rast A</author>
                    <author order="2">Schaffer M</author>
                    <author order="3">Albert S</author>
                    <author order="4">Wan W</author>
                    <author order="5">Pfeffer S</author>
                    <author order="6">Beck F</author>
                    <author order="7">Plitzko JM</author>
                    <author order="8">Nickelsen J</author>
                    <author order="9">Engel BD</author>
                    <title>Biogenic regions of cyanobacterial thylakoids form contact sites with the plasma membrane.</title>
                    <journal_abbreviation>Nat.Plants</journal_abbreviation>
                    <country>UK</country>
                    <volume>5</volume>
                    <first_page>436</first_page>
                    <last_page>446</last_page>
                    <year>2019</year>
                    <external_references type="PUBMED">30962530</external_references>
                    <external_references type="DOI">doi:10.1038/s41477-019-0399-7</external_references>
                    <external_references type="ISSN">2055-0278</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
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                <emdb_id>EMD-4604</emdb_id>
                <relationship>
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    <sample>
        <name>Defocus in situ tomogram of a Synechocystis cell</name>
        <supramolecule_list>
            <cell_supramolecule supramolecule_id="1">
                <name>Defocus in situ tomogram of a Synechocystis cell</name>
                <parent>0</parent>
                <natural_source database="NCBI">
                    <organism ncbi="1148">Synechocystis sp. PCC 6803</organism>
                </natural_source>
            </cell_supramolecule>
        </supramolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>tomography</method>
            <aggregation_state>cell</aggregation_state>
            <specimen_preparation_list>
                <tomography_preparation preparation_id="1">
                    <buffer>
                        <ph>7.0</ph>
                    </buffer>
                    <grid>
                        <model>Quantifoil R1.2/1.3</model>
                        <material>COPPER</material>
                        <mesh>200</mesh>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <atmosphere>AIR</atmosphere>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE-PROPANE</cryogen_name>
                        <chamber_humidity units="percentage">90</chamber_humidity>
                        <chamber_temperature units="K">297</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                        <details>Blotting time: 10 sec
Blot force: 10. </details>
                    </vitrification>
                    <details>Vitrious Synechocystis cell milled with a Ga2+ focused ion beam.</details>
                    <sectioning>
                        <focused_ion_beam>
                            <instrument>OTHER</instrument>
                            <ion>OTHER</ion>
                            <voltage units="kV">30</voltage>
                            <current units="nA">0.03</current>
                            <duration units="s">3600</duration>
                            <temperature units="K">93</temperature>
                            <initial_thickness units="nm">2000</initial_thickness>
                            <final_thickness units="nm">150</final_thickness>
                            <details>The value given for _emd_sectioning_focused_ion_beam.instrument is FEI Quanta FIB. This is not in a list of allowed values set(['DB235', 'OTHER']) so OTHER is written into the XML file.</details>
                        </focused_ion_beam>
                    </sectioning>
                </tomography_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <tomography_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">0.005</nominal_defocus_min>
                    <nominal_defocus_max units="µm">0.005</nominal_defocus_max>
                    <nominal_magnification>42000.</nominal_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <alignment_procedure>
                        <basic />
                    </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>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">3838</width>
                                    <height units="pixel">3710</height>
                                </dimensions>
                            </digitization_details>
                            <average_exposure_time units="s">1.5</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">1.5</average_electron_dose_per_image>
                            <details>Images were collected in movie-mode at 12 frames per second. Higher tilts had longer exposures.</details>
                        </image_recording>
                    </image_recording_list>
                </tomography_microscopy>
            </microscopy_list>
            <tomography_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <final_reconstruction>
                    <algorithm>BACK PROJECTION</algorithm>
                    <software_list>
                        <software>
                            <name>IMOD</name>
                            <version>4.9</version>
                        </software>
                    </software_list>
                    <number_images_used>60</number_images_used>
                </final_reconstruction>
            </tomography_processing>
        </structure_determination>
    </structure_determination_list>
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        <cell>
            <a units="Å">12695.04</a>
            <b units="Å">12695.04</b>
            <c units="Å">6347.52</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
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        <axis_order>
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            <medium>Y</medium>
            <slow>Z</slow>
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            <maximum>111.0</maximum>
            <average>1.5327439</average>
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            <x units="Å">13.68</x>
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        <label>::::EMDATABANK.org::::EMD-4604::::</label>
        <annotation_details>Defocus in situ tomogram of a Synechocystis cell</annotation_details>
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