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            <date>2017-07-12</date>
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        </current_status>
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            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2016-08-04</deposition>
            <header_release>2016-08-17</header_release>
            <map_release>2016-08-17</map_release>
            <update>2017-07-12</update>
        </key_dates>
        <title>Tomographic reconstruction of ex vivo mammalian prions</title>
        <authors_list>
            <author>Terry C</author>
            <author>Wenborn A</author>
            <author>Gros N</author>
            <author>Sells J</author>
            <author>Joiner S</author>
            <author>Hosszu LLP</author>
            <author>Tattum MH</author>
            <author>Panico S</author>
            <author>Clare DK</author>
            <author>Collinge J</author>
            <author>Saibil HR</author>
            <author>Wadsworth JDF</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Terry C</author>
                    <author order="2">Wenborn A</author>
                    <author order="3">Gros N</author>
                    <author order="4">Sells J</author>
                    <author order="5">Joiner S</author>
                    <author order="6">Hosszu LL</author>
                    <author order="7">Tattum MH</author>
                    <author order="8">Panico S</author>
                    <author order="9">Clare DK</author>
                    <author order="10">Collinge J</author>
                    <author order="11">Saibil HR</author>
                    <author order="12">Wadsworth JD</author>
                    <title>Ex vivo mammalian prions are formed of paired double helical prion protein fibrils.</title>
                    <journal_abbreviation>Open Biology</journal_abbreviation>
                    <country>UK</country>
                    <volume>6</volume>
                    <year>2016</year>
                    <external_references type="PUBMED">27249641</external_references>
                    <external_references type="DOI">doi:10.1098/rsob.160035</external_references>
                    <external_references type="ISSN">2046-2441</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
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                <emdb_id>EMD-4092</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
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    </crossreferences>
    <sample>
        <name>Infectious prion rods</name>
        <supramolecule_list>
            <organelle_or_cellular_component_supramolecule supramolecule_id="1">
                <name>Infectious prion rods</name>
                <parent>0</parent>
                <details>Ex vivo, isolated from prion-infected mouse brain (prion strain ME7)</details>
                <natural_source database="NCBI">
                    <organism ncbi="10090">Mus musculus</organism>
                    <strain>C57Bl/6</strain>
                    <organ>Brain</organ>
                </natural_source>
            </organelle_or_cellular_component_supramolecule>
        </supramolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>tomography</method>
            <aggregation_state>filament</aggregation_state>
            <specimen_preparation_list>
                <tomography_preparation preparation_id="1">
                    <buffer>
                        <ph>7.4</ph>
                        <component>
                            <concentration units="mM">20.0</concentration>
                            <name>Tris</name>
                        </component>
                        <component>
                            <concentration units="mM">150.0</concentration>
                            <name>Sodium chloride</name>
                        </component>
                    </buffer>
                    <staining>
                        <type>NEGATIVE</type>
                        <material>Uranyl Acetate</material>
                        <details>2% (w/v)</details>
                    </staining>
                    <grid>
                        <model>Electron Microscopy Sciences</model>
                        <material>COPPER</material>
                        <mesh>300</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>CONTINUOUS</film_topology>
                            <film_thickness units="nm">5.0</film_thickness>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <atmosphere>AIR</atmosphere>
                        </pretreatment>
                    </grid>
                    <details>Prions isolated from mouse brain, approximate concentration 3 ug/ml</details>
                    <sectioning>
                        <other_sectioning>NO SECTIONING</other_sectioning>
                    </sectioning>
                </tomography_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <tomography_microscopy microscopy_id="1">
                    <microscope>FEI TECNAI 12</microscope>
                    <illumination_mode>FLOOD BEAM</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>TUNGSTEN HAIRPIN</electron_source>
                    <acceleration_voltage units="kV">120</acceleration_voltage>
                    <c2_aperture_diameter units="&#181;m">100.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.0</nominal_cs>
                    <nominal_defocus_min units="&#181;m">0.5</nominal_defocus_min>
                    <calibrated_defocus_min units="&#181;m">0.5</calibrated_defocus_min>
                    <nominal_defocus_max units="&#181;m">1.0</nominal_defocus_max>
                    <calibrated_defocus_max units="&#181;m">1.0</calibrated_defocus_max>
                    <nominal_magnification>42000.</nominal_magnification>
                    <calibrated_magnification>58594.</calibrated_magnification>
                    <specimen_holder_model>OTHER</specimen_holder_model>
                    <alignment_procedure>
                        <basic />
                    </alignment_procedure>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN MULTISCAN</film_or_detector_model>
                            <digitization_details>
                                <dimensions>
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                                    <height units="pixel">1024</height>
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                                <sampling_interval units="&#181;m">15.0</sampling_interval>
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                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>1</number_real_images>
                            <average_exposure_time units="s">1.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/&#8491;^2">5.0</average_electron_dose_per_image>
                            <details>This is a representative tomogram of many samples and grids imaged.</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>4.3</version>
                        </software>
                    </software_list>
                    <number_images_used>51</number_images_used>
                </final_reconstruction>
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        </structure_determination>
    </structure_determination_list>
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