<?xml version="1.0" encoding="UTF-8"?>
<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://ftp.ebi.ac.uk/pub/databases/em_ebi/emdb_related/emdb-schemas/emdb_schemas/v3/v3_0_8_0/emdb.xsd" version="3.0.8.0" emdb_id="EMD-17203">
    <admin>
        <current_status>
            <date>2023-10-04</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2023-04-25</deposition>
            <header_release>2023-08-16</header_release>
            <map_release>2023-08-16</map_release>
            <update>2023-10-04</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Medical Research Council (MRC, United Kingdom)</funding_body>
                <country>United Kingdom</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Cancer Research UK</funding_body>
                <country>United Kingdom</country>
            </grant_reference>
        </grant_support>
        <title>Cryo-EM density map of the C. elegans complex CMG helicase/TIM-1/TIPN-1/DNSN-1 dimer on fork DNA (Multi-body Refinement TIM-1/TIPN-1/MCM-2-7 NTD/dsDNA)</title>
        <authors_list>
            <author ORCID="0000-0003-2335-8278">Jenkyn-Bedford M</author>
            <author ORCID="0000-0002-2255-2119">Yeeles JTP</author>
        </authors_list>
        <keywords>Replisome, DONSON, DNA replication, Initiation, REPLICATION</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0002-5576-2147" order="1">Xia Y</author>
                    <author order="2">Sonneville R</author>
                    <author ORCID="0000-0003-2335-8278" order="3">Jenkyn-Bedford M</author>
                    <author order="4">Ji L</author>
                    <author order="5">Alabert C</author>
                    <author ORCID="0009-0005-7980-6414" order="6">Hong Y</author>
                    <author ORCID="0000-0002-2255-2119" order="7">Yeeles JTP</author>
                    <author ORCID="0000-0001-8861-379X" order="8">Labib KPM</author>
                    <title>DNSN-1 recruits GINS for CMG helicase assembly during DNA replication initiation in Caenorhabditis elegans.</title>
                    <journal_abbreviation>Science</journal_abbreviation>
                    <country>US</country>
                    <volume>381</volume>
                    <first_page>eadi4932</first_page>
                    <last_page>eadi4932</last_page>
                    <year>2023</year>
                    <external_references type="PUBMED">37590372</external_references>
                    <external_references type="DOI">doi:10.1126/science.adi4932</external_references>
                    <external_references type="ISSN">1095-9203</external_references>
                    <external_references type="CSD">0038</external_references>
                    <external_references type="ASTM">SCIEAS</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
    </crossreferences>
    <sample>
        <name>In vitro reconstituted complex of Caenorhabditis elegans CMG helicase bound by TIM-1/TIPN-1 and a homodimer of DNSN-1, on a synthetic forked DNA substrate</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>In vitro reconstituted complex of Caenorhabditis elegans CMG helicase bound by TIM-1/TIPN-1 and a homodimer of DNSN-1, on a synthetic forked DNA substrate</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>3</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>4</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>5</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>6</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>7</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>8</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>9</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>10</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>11</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>12</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>13</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>14</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>15</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>16</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>All Caenorhabditis elegans proteins recombinantly expressed in either Saccharomyces cerevisiae (CMG helicase, TIM-1/TIPN-1) or Escherichia coli Rosetta (DE3) Competent cells (DNSN-1)</details>
                <natural_source database="NCBI">
                    <organism ncbi="6239">Caenorhabditis elegans</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>singleParticle</method>
            <aggregation_state>particle</aggregation_state>
            <specimen_preparation_list>
                <single_particle_preparation preparation_id="1">
                    <buffer>
                        <ph>7.5</ph>
                    </buffer>
                    <grid>
                        <model>Quantifoil R2/2</model>
                        <material>COPPER</material>
                        <mesh>400</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>CONTINUOUS</film_topology>
                            <film_thickness>2.0</film_thickness>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">5</time>
                        </pretreatment>
                        <details>PELCO easiGlow. 15 mA</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <details>Manual plunger. </details>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_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>
                    <nominal_defocus_min units="µm">1.0</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.5</nominal_defocus_max>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K3 BIOQUANTUM (6k x 4k)</film_or_detector_model>
                            <number_real_images>10825</number_real_images>
                            <average_exposure_time units="s">1.7</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">40.1</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
                </single_particle_microscopy>
            </microscopy_list>
            <singleparticle_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <particle_selection>
                    <number_selected>4540000</number_selected>
                </particle_selection>
                <startup_model type_of_model="EMDB MAP">
                    <emdb_id>EMD-10619</emdb_id>
                </startup_model>
                <final_reconstruction>
                    <resolution units="Å" res_type="BY AUTHOR">2.64</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>4.0</version>
                        </software>
                    </software_list>
                    <number_images_used>922000</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>ANGULAR RECONSTITUTION</type>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>ANGULAR RECONSTITUTION</type>
                </final_angle_assignment>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="126219">
        <file>emd_17203.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>316</col>
            <row>316</row>
            <sec>316</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
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        <spacing>
            <x>316</x>
            <y>316</y>
            <z>316</z>
        </spacing>
        <cell>
            <a units="Å">409.22</a>
            <b units="Å">409.22</b>
            <c units="Å">409.22</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
        </cell>
        <axis_order>
            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
        </axis_order>
        <statistics>
            <minimum>-0.06027337</minimum>
            <maximum>0.16155036</maximum>
            <average>-0.00018565153</average>
            <std>0.0027725475</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.295</x>
            <y units="Å">1.295</y>
            <z units="Å">1.295</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.0288</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-17203::::</label>
        <annotation_details>Cryo-EM density map of the C. elegans complex CMG helicase/TIM-1/TIPN-1/DNSN-1 dimer on fork DNA (Multi-body Refinement TIM-1/TIPN-1/MCM-2-7 NTD/dsDNA)</annotation_details>
    </map>
    <interpretation>
        <half_map_list>
            <half_map format="CCP4" size_kbytes="126219">
                <file>emd_17203_half_map_1.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>316</col>
                    <row>316</row>
                    <sec>316</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>316</x>
                    <y>316</y>
                    <z>316</z>
                </spacing>
                <cell>
                    <a units="Å">409.22</a>
                    <b units="Å">409.22</b>
                    <c units="Å">409.22</c>
                    <alpha units="deg">90.0</alpha>
                    <beta units="deg">90.0</beta>
                    <gamma units="deg">90.0</gamma>
                </cell>
                <axis_order>
                    <fast>X</fast>
                    <medium>Y</medium>
                    <slow>Z</slow>
                </axis_order>
                <statistics>
                    <minimum>-0.018389298</minimum>
                    <maximum>0.057194874</maximum>
                    <average>-0.000082743354</average>
                    <std>0.0012321413</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.295</x>
                    <y units="Å">1.295</y>
                    <z units="Å">1.295</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-17203::::</label>
                <annotation_details>Half-map 1. Cryo-EM density map of the C. elegans complex CMG helicase/TIM-1/TIPN-1/DNSN-1 dimer on fork DNA (Multi-body Refinement TIM-1/TIPN-1/MCM-2-7 NTD/dsDNA)</annotation_details>
            </half_map>
            <half_map format="CCP4" size_kbytes="126219">
                <file>emd_17203_half_map_2.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>316</col>
                    <row>316</row>
                    <sec>316</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>316</x>
                    <y>316</y>
                    <z>316</z>
                </spacing>
                <cell>
                    <a units="Å">409.22</a>
                    <b units="Å">409.22</b>
                    <c units="Å">409.22</c>
                    <alpha units="deg">90.0</alpha>
                    <beta units="deg">90.0</beta>
                    <gamma units="deg">90.0</gamma>
                </cell>
                <axis_order>
                    <fast>X</fast>
                    <medium>Y</medium>
                    <slow>Z</slow>
                </axis_order>
                <statistics>
                    <minimum>-0.018627767</minimum>
                    <maximum>0.05683071</maximum>
                    <average>-0.00008272671</average>
                    <std>0.0012314596</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.295</x>
                    <y units="Å">1.295</y>
                    <z units="Å">1.295</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-17203::::</label>
                <annotation_details>Half-map 2. Cryo-EM density map of the C. elegans complex CMG helicase/TIM-1/TIPN-1/DNSN-1 dimer on fork DNA (Multi-body Refinement TIM-1/TIPN-1/MCM-2-7 NTD/dsDNA)</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>
