<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" emdb_id="EMD-3744" version="3.0.0.0" xsi:schemaLocation="https://github.com/emdb-empiar/emdb-schemas/blob/master/v3/v3_0_0_0/emdb.xsd">
    <admin>
        <current_status>
            <date>2017-08-02</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2017-05-25</deposition>
            <header_release>2017-07-26</header_release>
            <map_release>2017-07-26</map_release>
            <update>2017-08-02</update>
        </key_dates>
        <title>Pronase-treated straight filament in Alzheimer's disease brain</title>
        <authors_list>
            <author>Fitzpatrick AWP</author>
            <author>Falcon B</author>
            <author>He S</author>
            <author>Murzin AG</author>
            <author>Murshudov G</author>
            <author>Garringer HG</author>
            <author>Crowther RA</author>
            <author>Ghetti B</author>
            <author>Goedert M</author>
            <author>Scheres SHW</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Fitzpatrick AWP</author>
                    <author order="2">Falcon B</author>
                    <author order="3">He S</author>
                    <author order="4">Murzin AG</author>
                    <author order="5">Murshudov G</author>
                    <author order="6">Garringer HJ</author>
                    <author order="7">Crowther RA</author>
                    <author order="8">Ghetti B</author>
                    <author order="9">Goedert M</author>
                    <author order="10">Scheres SHW</author>
                    <title>Cryo-EM structures of tau filaments from Alzheimer's disease.</title>
                    <journal_abbreviation>Nature</journal_abbreviation>
                    <country>UK</country>
                    <volume>547</volume>
                    <first_page>185</first_page>
                    <last_page>190</last_page>
                    <year>2017</year>
                    <external_references type="PUBMED">28678775</external_references>
                    <external_references type="DOI">doi:10.1038/nature23002</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>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-3744</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
                </relationship>
                <details>Pronase-treated straight filament in Alzheimer's disease brain</details>
            </emdb_reference>
        </emdb_list>
    </crossreferences>
    <sample>
        <name>Tau</name>
        <supramolecule_list>
            <tissue_supramolecule supramolecule_id="1">
                <name>Tau</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
            </tissue_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Tau</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Human</organism>
                </natural_source>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>VQIVYKPVDLSKVTSKCGSLGNIHHKPGGGQVEVKSEKLDFKDRVQSKIGSLDNITHVPGGGNKKIETHKLTF</string>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>helical</method>
            <aggregation_state>tissue</aggregation_state>
            <specimen_preparation_list>
                <helical_preparation preparation_id="1">
                    <concentration units="mg/mL">1.0</concentration>
                    <buffer>
                        <ph>7.4</ph>
                        <details>20 mM Tris-HCl pH 7.4 containing 100 MM NaCl</details>
                    </buffer>
                    <grid>
                        <model>Quanitifoil Au R1.2/1.3</model>
                        <material>GOLD</material>
                        <mesh>300</mesh>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">277.15</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                        <details />
                    </vitrification>
                    <details>Sarkosyl-insoluble material was extracted from grey matter of frontal and temporal cortex from the patients brain and treated with pronase, as described in the Methods section of the paper.</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>
                    <c2_aperture_diameter units="&#181;m">70.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="&#181;m">0.9</nominal_defocus_min>
                    <calibrated_defocus_min units="&#181;m">0.9</calibrated_defocus_min>
                    <nominal_defocus_max units="&#181;m">3.0</nominal_defocus_max>
                    <calibrated_defocus_max units="&#181;m">3.0</calibrated_defocus_max>
                    <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</name>
                            <lower_energy_threshold units="eV">-10</lower_energy_threshold>
                            <upper_energy_threshold units="eV">10</upper_energy_threshold>
                        </energy_filter>
                    </specialist_optics>
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                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K2 QUANTUM (4k x 4k)</film_or_detector_model>
                            <detector_mode>SUPER-RESOLUTION</detector_mode>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">3710</width>
                                    <height units="pixel">3710</height>
                                </dimensions>
                                <frames_per_image>2-20</frames_per_image>
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                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>523</number_real_images>
                            <average_exposure_time units="s">0.8</average_exposure_time>
                            <average_electron_dose_per_image units="e/&#8491;^2">2.5</average_electron_dose_per_image>
                            <details>images were collected in movie-mode at 1.2 frames per second</details>
                        </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="&#8491;">4.78</delta_z>
                            <delta_phi units="deg">-1.01</delta_phi>
                            <axial_symmetry>C1</axial_symmetry>
                        </helical_parameters>
                    </applied_symmetry>
                    <resolution res_type="BY AUTHOR" units="&#8491;">4.9</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <number_images_used>8627</number_images_used>
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                <ctf_correction>
                    <software_list>
                        <software>
                            <name>Gctf</name>
                        </software>
                    </software_list>
                </ctf_correction>
                <segment_selection>
                    <number_selected>9273</number_selected>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2.0</version>
                        </software>
                    </software_list>
                </segment_selection>
                <startup_model type_of_model="INSILICO MODEL">
                    <insilico_model>Initial models were reconstructed from 2D class averages of segments that were extracted in a box that was large enough to almost comprise an entire pitch length.</insilico_model>
                </startup_model>
                <final_angle_assignment>
                    <type>NOT APPLICABLE</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2.0</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </helical_processing>
        </structure_determination>
    </structure_determination_list>
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            <space_group>1</space_group>
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        <axis_order>
            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
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            <minimum>-0.011788864</minimum>
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            <contour primary="true">
                <level>0.012</level>
                <source>AUTHOR</source>
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        </contour_list>
        <label>::::EMDATABANK.org::::EMD-3744::::</label>
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        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>2RNM</access_code>
                    <chain>
                        <chain_id>A</chain_id>
                        <residue_range>226-242</residue_range>
                    </chain>
                </initial_model>
                <refinement_protocol>AB INITIO MODEL</refinement_protocol>
                <details>Fourier-space refinement of the complete atomic model against the paired helical filament and straight filament maps was performed in REFMAC. A stack of three consecutive monomers from each of the protofilaments was refined to preserve nearest-neighbour interactions for the middle chain.</details>
                <target_criteria>Fourier shell correlation</target_criteria>
                <refinement_space>RECIPROCAL</refinement_space>
                <overall_bvalue>79.</overall_bvalue>
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                <label>::::EMDATABANK.org::::EMD-3744::::</label>
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                    <medium>Y</medium>
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                <label>::::EMDATABANK.org::::EMD-3744::::</label>
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        </half_map_list>
    </interpretation>
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