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        <current_status>
            <date>2025-01-01</date>
            <code>REL</code>
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            <deposition>2023-11-25</deposition>
            <header_release>2024-01-17</header_release>
            <map_release>2024-01-17</map_release>
            <update>2025-01-01</update>
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            <grant_reference>
                <funding_body>Biotechnology and Biological Sciences Research Council (BBSRC)</funding_body>
                <country>United Kingdom</country>
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        </grant_support>
        <title>MCM in complex with dsDNA in presence of ATP.</title>
        <authors_list>
            <author>Ma J</author>
            <author>Yi G</author>
            <author>Ye M</author>
            <author>MacGregor-Chatwin C</author>
            <author>Sheng Y</author>
            <author>Lu Y</author>
            <author>Li M</author>
            <author>Gilbert RJC</author>
            <author>Zhang P</author>
        </authors_list>
        <keywords>Helicase, Replication, HYDROLASE</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Ma J</author>
                    <author ORCID="0009-0004-6509-4893" order="2">Yi G</author>
                    <author ORCID="0000-0001-6324-4238" order="3">Ye M</author>
                    <author order="4">MacGregor-Chatwin C</author>
                    <author ORCID="0000-0003-3067-9520" order="5">Sheng Y</author>
                    <author ORCID="0000-0002-8421-7228" order="6">Lu Y</author>
                    <author ORCID="0000-0002-5328-5826" order="7">Li M</author>
                    <author ORCID="0000-0002-8583-3620" order="8">Li Q</author>
                    <author ORCID="0000-0002-2829-1546" order="9">Wang D</author>
                    <author ORCID="0000-0001-9336-5604" order="10">Gilbert RJC</author>
                    <author ORCID="0000-0003-1803-691X" order="11">Zhang P</author>
                    <title>Open architecture of archaea MCM and dsDNA complexes resolved using monodispersed streptavidin affinity CryoEM.</title>
                    <journal_abbreviation>Nat Commun</journal_abbreviation>
                    <country>UK</country>
                    <volume>15</volume>
                    <first_page>10304</first_page>
                    <last_page>10304</last_page>
                    <year>2024</year>
                    <external_references type="PUBMED">39604363</external_references>
                    <external_references type="DOI">doi:10.1038/s41467-024-53745-w</external_references>
                    <external_references type="ISSN">2041-1723</external_references>
                </journal_citation>
            </primary_citation>
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    <sample>
        <name>MCM homohexamer in complex with dsDNA in presence of ATP</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>MCM homohexamer in complex with dsDNA in presence of ATP</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="311400">Thermococcus kodakarensis</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>mini-chromosome maintenance complex 3</name>
                <natural_source database="NCBI">
                    <organism ncbi="311400">Thermococcus kodakarensis</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.07663124199999999</theoretical>
                </molecular_weight>
                <number_of_copies>6</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MDREEMIARFAKFLREYVDDEGNEVYINRLKDLLTVTPKRSLAIDWAHLNSFDPELADELLNNPEEAIASAEDAIQIVLR
EPPLLVEREFKVHARFYNLPKTLLVKELGSEHINKLIQVEGIITRVSEVKPFVEKAVFVCRDCGNEMVRLQRPYENLVKP
AKCDACGSRNIELDVDKSRFLNFQSFRLQDRPESLKGGQMPRFVDAILLDDLVDAALPGDRVLVTGVLRVILEQREKRPI
FKKILEVNHIEQLSKEIEELEISPEDEQKIRELAKRKDIVDAIVDSIAPAIWGHRIVKKGIALALFGGVQRTLPDGTKLR
GESHVLLVGDPGVAKSQLLRYVANLAPRAIYTSGKSSSAAGLTAAAVRDEFTGSWVLEAGVLVLADGGFALIDEFDKMSD
RDRSAIHEALEQQTISISKAGITATLNSRTTVIAAANPKFGRFNRHKSLPEQLDLPPTLLSRFDLIFLLLDEPDEKVDAS
IAEHILKVRRGEAEAVTPKIPYDLLKKYIAYARKNVHPVLSREAMEEIKRYYVKMRKGLRRGDEDGVQPIPITARQLEAL
IRLSEAHARMRLSETVTREDARAAIEIIEAMMKTIAVDEEGNLDVSILEVGKSSKKINKIEKLVDIIKSLESEGEFGAPE
EKVIEAAKQAGIGTKADIEKLLNELKSDGRVYEPRAGFYRVI</string>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="2">
                <name>MAGNESIUM ION</name>
                <molecular_weight>
                    <theoretical units="MDa">2.4305e-05</theoretical>
                </molecular_weight>
                <number_of_copies>3</number_of_copies>
                <formula>MG</formula>
            </ligand>
            <ligand macromolecule_id="3">
                <name>ADENOSINE-5'-TRIPHOSPHATE</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000507181</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <formula>ATP</formula>
            </ligand>
            <ligand macromolecule_id="4">
                <name>ADENOSINE-5'-DIPHOSPHATE</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000427201</theoretical>
                </molecular_weight>
                <number_of_copies>3</number_of_copies>
                <formula>ADP</formula>
            </ligand>
        </macromolecule_list>
    </sample>
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            <method>singleParticle</method>
            <aggregation_state>particle</aggregation_state>
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                <single_particle_preparation preparation_id="1">
                    <buffer>
                        <ph>7.8</ph>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
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                    <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">0.5</nominal_defocus_min>
                    <nominal_defocus_max units="µm">3.0</nominal_defocus_max>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>FEI FALCON IV (4k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/Å^2">39.0</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>
                <startup_model type_of_model="OTHER">
                    <details>Generated using ab-initio reconstruction routine in cryoSPARC</details>
                </startup_model>
                <final_reconstruction>
                    <resolution units="Å" res_type="BY AUTHOR">3.57</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <number_images_used>126808</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>RANDOM ASSIGNMENT</type>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                </final_angle_assignment>
            </singleparticle_processing>
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            <a units="Å">357.888</a>
            <b units="Å">357.888</b>
            <c units="Å">357.888</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
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            <medium>Y</medium>
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