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    <admin>
        <current_status>
            <date>2026-03-11</date>
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        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2025-05-21</deposition>
            <header_release>2026-03-11</header_release>
            <map_release>2026-03-11</map_release>
            <update>2026-03-11</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Canadian Institutes of Health Research (CIHR)</funding_body>
                <country>Canada</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Helmholtz Association</funding_body>
                <country>Germany</country>
            </grant_reference>
        </grant_support>
        <title>A53T alpha-synuclein fibril - Type 2</title>
        <authors_list>
            <author>So RWL</author>
            <author>Frieg B</author>
            <author>Schroeder GF</author>
            <author>Watts JC</author>
        </authors_list>
        <keywords>alpha-synuclein, fibril, A53T mutant, PROTEIN FIBRIL</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">So RWL</author>
                    <author order="2">Frieg B</author>
                    <author order="3">Camino JD</author>
                    <author order="4">Situ C</author>
                    <author order="5">Metri MN</author>
                    <author order="6">Silver NRG</author>
                    <author order="7">Li LY</author>
                    <author order="8">Mao A</author>
                    <author order="9">Stuart E</author>
                    <author order="10">Schroder GF</author>
                    <author order="11">Watts JC</author>
                    <title>Stochastic misfolding drives the emergence of distinct alpha-synuclein strains.</title>
                    <journal_abbreviation>Neuron</journal_abbreviation>
                    <country>US</country>
                    <year>2026</year>
                    <external_references type="PUBMED">41763203</external_references>
                    <external_references type="DOI">doi:10.1016/j.neuron.2026.01.014</external_references>
                    <external_references type="ISSN">0896-6273</external_references>
                    <external_references type="CSD">2038</external_references>
                    <external_references type="ASTM">NERNET</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>9rb6</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
        <other_db_list>
            <db_reference>
                <db_name>PDB</db_name>
                <accession_id>9RB3</accession_id>
                <content_type>unspecified</content_type>
                <details>A53T alpha-synuclein fibril - Type 1</details>
            </db_reference>
            <db_reference>
                <db_name>EMDB</db_name>
                <accession_id>EMD-53885</accession_id>
                <content_type>associated EM volume</content_type>
                <details>A53T alpha-synuclein fibril - Type 2</details>
            </db_reference>
        </other_db_list>
    </crossreferences>
    <sample>
        <name>A53T alpha-synuclein fibril - Type 2</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>A53T alpha-synuclein fibril - Type 2</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>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Alpha-synuclein</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.014506136</theoretical>
                </molecular_weight>
                <number_of_copies>10</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MDVFMKGLSKAKEGVVAAAEKTKQGVAEAAGKTKEGVLYVGSKTKEGVVHGVTTVAEKTKEQVTNVGGAVVTGVTAVAQK
TVEGAGSIAAATGFVKKDQLGKNEEGAPQEGILEDMPVDPDNEAYEMPSEEGYQDYEPEA</string>
                    <external_references type="UNIPROTKB">P37840</external_references>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
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            <aggregation_state>filament</aggregation_state>
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                <helical_preparation preparation_id="1">
                    <buffer>
                        <ph>7.4</ph>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                    </vitrification>
                </helical_preparation>
            </specimen_preparation_list>
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                    <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>
                    <nominal_defocus_min units="µm">0.5</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.5</nominal_defocus_max>
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                        </image_recording>
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            </microscopy_list>
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                            <axial_symmetry>C1</axial_symmetry>
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                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">3.02</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <number_images_used>15594</number_images_used>
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                <ctf_correction>
                    <type>NONE</type>
                </ctf_correction>
                <startup_model type_of_model="OTHER">
                    <details>Featureless cylinder</details>
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                <final_angle_assignment>
                    <type>NOT APPLICABLE</type>
                </final_angle_assignment>
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                <level>0.04</level>
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        <label>::::EMDATABANK.org::::EMD-53885::::</label>
        <annotation_details>A53T alpha-synuclein fibril - Type 2</annotation_details>
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                    <b units="Å">250.8</b>
                    <c units="Å">250.8</c>
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                <annotation_details>A53T alpha-synuclein fibril - Type 2
(half map 2)</annotation_details>
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                <label>::::EMDATABANK.org::::EMD-53885::::</label>
                <annotation_details>A53T alpha-synuclein fibril - Type 2
(half map 1)</annotation_details>
            </half_map>
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