<?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_9_2/emdb.xsd" version="3.0.9.2" emdb_id="EMD-22453">
    <admin>
        <current_status>
            <date>2024-03-06</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2020-08-14</deposition>
            <header_release>2020-12-09</header_release>
            <map_release>2020-12-09</map_release>
            <update>2024-03-06</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)</funding_body>
                <code>GM124204</code>
                <country>United States</country>
            </grant_reference>
        </grant_support>
        <title>Adeno-Associated Virus 2 Rep68 HD Hexamer-ssDNA with ATPgS</title>
        <authors_list>
            <author>Escalante CR</author>
        </authors_list>
        <keywords>AAV, Protein-DNA, AAA+, SF3, HUH, VIRAL PROTEIN, VIRAL PROTEIN-DNA complex</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Santosh V</author>
                    <author order="2">Musayev FN</author>
                    <author order="3">Jaiswal R</author>
                    <author order="4">Zarate-Perez F</author>
                    <author order="5">Vandewinkel B</author>
                    <author order="6">Dierckx C</author>
                    <author order="7">Endicott M</author>
                    <author order="8">Sharifi K</author>
                    <author order="9">Dryden K</author>
                    <author order="10">Henckaerts E</author>
                    <author order="11">Escalante CR</author>
                    <title>The Cryo-EM structure of AAV2 Rep68 in complex with ssDNA reveals a malleable AAA+ machine that can switch between oligomeric states.</title>
                    <journal_abbreviation>Nucleic Acids Res.</journal_abbreviation>
                    <country>UK</country>
                    <volume>48</volume>
                    <first_page>12983</first_page>
                    <last_page>12999</last_page>
                    <year>2020</year>
                    <external_references type="PUBMED">33270897</external_references>
                    <external_references type="DOI">doi:10.1093/nar/gkaa1133</external_references>
                    <external_references type="ISSN">1362-4962</external_references>
                    <external_references type="CSD">0389</external_references>
                    <external_references type="ASTM">NARHAD</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>7jsg</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Rep68 Helicase in complex with ssDNA (poly-dT)</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Rep68 Helicase in complex with ssDNA (poly-dT)</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>Heptameric complex model of helicase domain</details>
                <natural_source database="NCBI">
                    <organism ncbi="10804">Adeno-associated virus - 2</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.4245</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Protein Rep68</name>
                <natural_source database="NCBI">
                    <organism ncbi="10804">Adeno-associated virus - 2</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.060908703</theoretical>
                </molecular_weight>
                <number_of_copies>7</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="866768">Escherichia coli 'BL21-Gold(DE3)pLysS AG'</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>GPPGFYEIVIKVPSDLDEHLPGISDSFVNWVAEKEWELPPDSDMDLNLIEQAPLTVAEKLQRDFLTEWRRVSKAPEALFF
VQFEKGESYFHMHVLVETTGVKSMVLGRFLSQIREKLIQRIYRGIEPTLPNWFAVTKTRNGAGGGNKVVDESYIPNYLLP
KTQPELQWAWTNMEQYLSACLNLTERKRLVAQHLTHVSQTQEQNKENQNPNSDAPVIRSKTSARYMELVGWLVDKGITSE
KQWIQEDQASYISFNAASNSRSQIKAALDNAGKIMSLTKTAPDYLVGQQPVEDISSNRIYKILELNGYDPQYAASVFLGW
ATKKFGKRNTIWLFGPATTGKTNIAEAIAHTVPFYGCVNWTNENFPFNDCVDKMVIWWEEGKMTAKVVESAKAILGGSKV
RVDQKCKSSAQIDPTPVIVTSNTNMCAVIDGNSTTFEHQQPLQDRMFKFELTRRLDHDFGKVTKQEVKDFFRWAKDHVVE
VEHEFYVKKGGAKKRPAPSDADISEPKRVRESVAQPSTSDAEASINYADRLARGHSL</string>
                    <external_references type="UNIPROTKB">P03132</external_references>
                </sequence>
                <ec_number>3.6.4.12</ec_number>
            </protein_or_peptide>
            <dna macromolecule_id="2">
                <name>DNA (5'-D(P*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*TP*T)-3')</name>
                <natural_source database="NCBI">
                    <organism ncbi="32630">synthetic construct</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.005126319999999999</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <sequence>
                    <string>(DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT)</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">0.75</concentration>
                    <buffer>
                        <ph>7.9</ph>
                        <component>
                            <concentration units="mM">25.0</concentration>
                            <formula>C4H11NO3</formula>
                            <name>2-amino-2-(hydroxymethyl)aminomethane</name>
                        </component>
                        <component>
                            <concentration units="mM">200.0</concentration>
                            <formula>NaCl</formula>
                            <name>Sodium Chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">1.0</concentration>
                            <formula>C9H15O6P</formula>
                            <name>Tris(2-carboxyethyl)phosphine</name>
                        </component>
                        <component>
                            <concentration units="%">0.05</concentration>
                            <formula>C14H28O6</formula>
                            <name>Octyl-glucopyranoside</name>
                        </component>
                        <component>
                            <concentration units="mM">5.0</concentration>
                            <formula>C10H12N5O12P3S1</formula>
                            <name>ATPgS</name>
                        </component>
                    </buffer>
                    <grid>
                        <model>C-flat-1.2/1.3</model>
                        <material>COPPER</material>
                        <mesh>400</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">45</time>
                            <atmosphere>AMYLAMINE</atmosphere>
                        </pretreatment>
                    </grid>
                    <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>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K2 SUMMIT (4k x 4k)</film_or_detector_model>
                            <detector_mode>COUNTING</detector_mode>
                            <number_real_images>4555</number_real_images>
                            <average_electron_dose_per_image units="e/Å^2">55.46</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>294324</number_selected>
                </particle_selection>
                <startup_model type_of_model="NONE"/>
                <final_reconstruction>
                    <resolution units="Å" res_type="BY AUTHOR">5.2</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <number_images_used>78701</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>2.5</version>
                        </software>
                    </software_list>
                </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="108001">
        <file>emd_22453.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>300</col>
            <row>300</row>
            <sec>300</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>300</x>
            <y>300</y>
            <z>300</z>
        </spacing>
        <cell>
            <a units="Å">321.9</a>
            <b units="Å">321.9</b>
            <c units="Å">321.9</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>-0.37320375</minimum>
            <maximum>0.8154044</maximum>
            <average>0.00091500755</average>
            <std>0.0342059</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.073</x>
            <y units="Å">1.073</y>
            <z units="Å">1.073</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.223</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-22453::::</label>
        <annotation_details>Local refinement map of helicase domain</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <refinement_protocol>RIGID BODY FIT</refinement_protocol>
            </modelling>
        </modelling_list>
    </interpretation>
</emd>
