<?xml version="1.0" encoding="UTF-8"?>
<emd emdb_id="EMD-29886" version="3.0.3.0">
    <admin>
        <current_status>
            <date>2023-04-12</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2023-02-22</deposition>
            <header_release>2023-04-12</header_release>
            <map_release>2023-04-12</map_release>
            <update>2023-04-12</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)</funding_body>
                <code>GM136401</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)</funding_body>
                <code>GM118089</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Cancer Institute (NIH/NCI)</funding_body>
                <code>CA92584</code>
                <country>United States</country>
            </grant_reference>
        </grant_support>
        <title>Partial DNA termination subcomplex of Xenopus laevis DNA polymerase alpha-primase</title>
        <authors_list>
            <author>Mullins EA</author>
            <author>Chazin WJ</author>
            <author>Eichman BF</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0003-3834-1065" order="1">Mullins EA</author>
                    <author order="2">Salay LE</author>
                    <author ORCID="0000-0002-4027-4386" order="3">Durie CL</author>
                    <author ORCID="0000-0001-9291-8852" order="4">Jackman JE</author>
                    <author ORCID="0000-0003-1750-4793" order="5">Ohi MD</author>
                    <author ORCID="0000-0002-2180-0790" order="6">Chazin WJ</author>
                    <author ORCID="0000-0002-0965-2297" order="7">Eichman BF</author>
                    <title>A mechanistic model of primer synthesis from catalytic structures of DNA polymerase alpha-primase.</title>
                    <journal_abbreviation>Biorxiv</journal_abbreviation>
                    <country>US</country>
                    <year>2023</year>
                    <external_references type="PUBMED">36993335</external_references>
                    <external_references type="DOI">doi:10.1101/2023.03.16.533013</external_references>
                    <external_references type="ISSN">2692-8205</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-29886</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
                </relationship>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-29862</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-29864</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-29871</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-29872</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-29873</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-29888</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-29889</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-29891</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
        </emdb_list>
    </crossreferences>
    <sample>
        <name>Polymerase alpha-primase with a DNA termination substrate</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1" chimera="true">
                <name>Polymerase alpha-primase with a DNA termination 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_list>
                <details>Heterotetrameric protein complex with an RNA-DNA/DNA duplex</details>
                <molecular_weight>
                    <theoretical units="MDa">0.33</theoretical>
                </molecular_weight>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="2" chimera="true">
                <name>Polymerase alpha</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>Heterodimer consisting of POLA1 and POLA2</details>
                <natural_source database="NCBI">
                    <organism ncbi="8355">Xenopus laevis</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.2</theoretical>
                </molecular_weight>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="3" chimera="true">
                <name>Primase</name>
                <parent>1</parent>
                <details>Heterodimer consisting of PRIM1 and PRIM2</details>
                <natural_source database="NCBI">
                    <organism ncbi="8355">Xenopus laevis</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.11</theoretical>
                </molecular_weight>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="4" chimera="true">
                <name>DNA termination substrate</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>3</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>RNA-DNA/DNA duplex</details>
                <natural_source database="NCBI">
                    <organism ncbi="32630">synthetic construct</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.03</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>POLA1</name>
                <natural_source database="NCBI">
                    <organism ncbi="8355">Xenopus laevis</organism>
                </natural_source>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7108">Spodoptera frugiperda</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>SNAADGSQVFRFYWLDAYEDQYSQPGVVYLFGKVWIESADAYVSCCVSVKNIERTVYLLPRENRVQLSTGKDTGAPVSMMHVYQEFNEAVAEKYKIMKFKSKKVDKDYAFEIPDVPASSEYLEVRYSADSPQLPQDLKGETFSHVFGTNTSSLELFLLSRKIKGPSWLEIKSPQLSSQPMSWCKVEAVVTRPDQVSVVKDLAPPPVVVLSLSMKTVQNAKTHQNEIVAIAALVHHTFPLDKAPPQPPFQTHFCVLSKLNDCIFPYDYNEAVKQKNANIEIALTERTLLGFFLAKIHKIDPDVIVGHDIYGFDLEVLLQRINSCKVPFWSKIGRLRRSVMPKLGGRSGFAERNAACGRIICDIEISAKELIRCKSYHLSELVHQILKAERVVIPPENIRNAYNDSVHLLYMLENTWIDAKFILQIMCELNVLPLALQITNIAGNVMSRTLMGGRSERNEYLLLHAFTENNFIVPDKPVFKKMQQTTVEDNDDMGTDQNKNKSRKKAAYAGGLVLEPKVGFYDKFILLLDFNSLYPSIIQEYNICFTTVHREAPSTQKGEDQDEIPELPHSDLEMGILPREIRKLVERRRHVKQLMKQPDLNPDLYLQYDIRQKALKLTANSMYGCLGFSYSRFYAKPLAALVTHQGREILLHTKEMVQKMNLEVIYGDTDSIMINTNCNNLEEVFKLGNRVKSEINKSYKLLEIDIDGIFKSLLLLKKKKYAALTVEPTGDGKYVTKQELKGLDIVRRDWCELAKQAGNYVISQILSDQPRDSIVENIQKKLTEIGENVTNGTVPITQYEINKALTKDPQDYPDKKSLPHVHVALWINSQGGRKVKAGDTISYVICQDGSNLSASQRAYAQEQLQKQENLSIDTQYYLSQQVHPVVARICEPIDGIDSALIAMWLGLDPSQFRAHRHYQQDEENDALLGGPSQLTDEEKYRDCERFKFFCPKCGTENIYDNVFDGSGLQIEPGLKRCSKPECDASPLDYVIQVHNKLLLDIRRYIKKYYSGWLVCEEKTCQNRTRRLPLSFSRNGPICQACSKATLRSEYPEKALYTQLCFYRFIFDWDYALEKVVSEQERGHLKKKLFQESENQYKKLKSTVDQVLSRSGYSEVNLSKLFQTLNTIK</string>
                </sequence>
            </protein_or_peptide>
            <dna macromolecule_id="2">
                <name>DNA template</name>
                <natural_source database="NCBI">
                    <organism ncbi="32630">synthetic construct</organism>
                </natural_source>
                <sequence>
                    <string>(DT)(DG)(DT)(DA)(DT)(DG)(DT)(DA)(DT)(DG)(DT)(DA)(DT)(DG)(DT)(DC)(DG)(DC)(DT)(DA)(DC)(DA)(DA)(DT)(DC)(DG)(DC)(DT)(DA)(DA)(DG)(DT)(DT)(DC)(DA)(DC)(DG)(DC)(DA)(DG)(DT)(DA)(DT)(DC)(DC)(DT)(DG)(DT)(DA)(DT)(DG)(DT)(DA)(DT)(DG)(DT)(DA)(DT)(DG)</string>
                </sequence>
                <classification>DNA</classification>
            </dna>
            <dna macromolecule_id="3">
                <name>RNA-DNA primer</name>
                <natural_source database="NCBI">
                    <organism ncbi="32630">synthetic construct</organism>
                </natural_source>
                <sequence>
                    <string>(GTP)GAUACUGC(DG)(DT)(DG)(DA)(DA)(DC)(DT)(DT)(DA)(DG)(DC)(DG)(DA)(DT)(DT)(DG)(DT)(DA)(DG)(DOC)</string>
                </sequence>
                <classification>DNA</classification>
            </dna>
        </macromolecule_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">
                    <concentration units="mg/mL">0.9</concentration>
                    <buffer>
                        <ph>7.5</ph>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                    </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_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">0.8</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.0</nominal_defocus_max>
                    <nominal_magnification>105000.0</nominal_magnification>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K3 BIOQUANTUM (6k x 4k)</film_or_detector_model>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>22893</number_real_images>
                            <average_electron_dose_per_image units="e/Å^2">55.8</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>25216892</number_selected>
                </particle_selection>
                <startup_model type_of_model="INSILICO MODEL">
                    <insilico_model>Ab initio reconstruction</insilico_model>
                </startup_model>
                <final_reconstruction>
                    <applied_symmetry>
                        <point_group>C1</point_group>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">3.9</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                        </software>
                    </software_list>
                    <number_images_used>278995</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="256001">
        <file>emd_29886.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>400</col>
            <row>400</row>
            <sec>400</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>400</x>
            <y>400</y>
            <z>400</z>
        </spacing>
        <cell>
            <a units="Å">328.0</a>
            <b units="Å">328.0</b>
            <c units="Å">328.0</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>-0.28128654</minimum>
            <maximum>0.8381235</maximum>
            <average>-0.0014583338</average>
            <std>0.024696702</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">0.82</x>
            <y units="Å">0.82</y>
            <z units="Å">0.82</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.2</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-29886::::</label>
        <annotation_details>Partial DNA termination subcomplex of Xenopus laevis DNA polymerase alpha-primase</annotation_details>
    </map>
    <interpretation>
        <half_map_list>
            <half_map format="CCP4" size_kbytes="256001">
                <file>emd_29886_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>400</col>
                    <row>400</row>
                    <sec>400</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>400</x>
                    <y>400</y>
                    <z>400</z>
                </spacing>
                <cell>
                    <a units="Å">328.0</a>
                    <b units="Å">328.0</b>
                    <c units="Å">328.0</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>-0.619586</minimum>
                    <maximum>1.0915436</maximum>
                    <average>0.00016545501</average>
                    <std>0.07496074</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.82</x>
                    <y units="Å">0.82</y>
                    <z units="Å">0.82</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-29886::::</label>
                <annotation_details>Partial DNA termination subcomplex of Xenopus laevis DNA polymerase alpha-primase (half 1)</annotation_details>
            </half_map>
            <half_map format="CCP4" size_kbytes="256001">
                <file>emd_29886_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>400</col>
                    <row>400</row>
                    <sec>400</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>400</x>
                    <y>400</y>
                    <z>400</z>
                </spacing>
                <cell>
                    <a units="Å">328.0</a>
                    <b units="Å">328.0</b>
                    <c units="Å">328.0</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>-0.6413416</minimum>
                    <maximum>1.0068566</maximum>
                    <average>0.00017263014</average>
                    <std>0.07499675</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.82</x>
                    <y units="Å">0.82</y>
                    <z units="Å">0.82</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-29886::::</label>
                <annotation_details>Partial DNA termination subcomplex of Xenopus laevis DNA polymerase alpha-primase (half 2)</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>
