<?xml version="1.0" encoding="UTF-8"?>
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    <admin>
        <current_status>
            <date>2024-10-23</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2019-03-15</deposition>
            <header_release>2019-07-24</header_release>
            <map_release>2019-09-04</map_release>
            <update>2024-10-23</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Spanish Ministry of Science, Innovation, and Universities</funding_body>
                <code>BFU2014-54181</code>
                <country>Spain</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Spanish Ministry of Science, Innovation, and Universities</funding_body>
                <code>BFU2014-53550-P</code>
                <country>Spain</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Spanish Ministry of Science, Innovation, and Universities</funding_body>
                <code>BFU2017-83720-P</code>
                <country>Spain</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Spanish Ministry of Science, Innovation, and Universities</funding_body>
                <code>MDM-2014-0435</code>
                <country>Spain</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Spanish Ministry of Science, Innovation, and Universities</funding_body>
                <code>SEV-2013-0347</code>
                <country>Spain</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Spanish Ministry of Science, Innovation, and Universities</funding_body>
                <code>RYC-2011-09071</code>
                <country>Spain</country>
            </grant_reference>
            <grant_reference>
                <funding_body>European Commission</funding_body>
                <code>653706</code>
            </grant_reference>
        </grant_support>
        <title>Bacteriophage ejection complex</title>
        <authors_list>
            <author>Cuervo A</author>
            <author>Fabrega-Ferrer M</author>
        </authors_list>
        <keywords>viral complex, DNA ejection, VIRAL PROTEIN</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Cuervo A</author>
                    <author order="2">Fabrega-Ferrer M</author>
                    <author ORCID="0000-0001-5363-2958" order="3">Machon C</author>
                    <author order="4">Conesa JJ</author>
                    <author ORCID="0000-0002-5015-1849" order="5">Fernandez FJ</author>
                    <author order="6">Perez-Luque R</author>
                    <author order="7">Perez-Ruiz M</author>
                    <author ORCID="0000-0002-3188-7674" order="8">Pous J</author>
                    <author order="9">Vega MC</author>
                    <author order="10">Carrascosa JL</author>
                    <author ORCID="0000-0003-4471-8674" order="11">Coll M</author>
                    <title>Structures of T7 bacteriophage portal and tail suggest a viral DNA retention and ejection mechanism.</title>
                    <journal_abbreviation>Nat Commun</journal_abbreviation>
                    <country>UK</country>
                    <volume>10</volume>
                    <first_page>3746</first_page>
                    <last_page>3746</last_page>
                    <year>2019</year>
                    <external_references type="PUBMED">31431626</external_references>
                    <external_references type="DOI">doi:10.1038/s41467-019-11705-9</external_references>
                    <external_references type="ISSN">2041-1723</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-4667</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>Cryo-EM structure of T7 bacteriophage portal protein, 13mer, closed valve</details>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-4669</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>Cryo-EM structure of T7 bacteriophage portal protein, 12mer, open valve</details>
            </emdb_reference>
        </emdb_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>6r21</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Bacteriophage tail complex</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Bacteriophage tail complex</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>
                <natural_source database="NCBI">
                    <organism ncbi="10760">Enterobacteria phage T7</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.534</theoretical>
                </molecular_weight>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="2">
                <name>Portal protein</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="10760">Enterobacteria phage T7</organism>
                </natural_source>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="3">
                <name>Adaptor protein</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="10760">Enterobacteria phage T7</organism>
                </natural_source>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="4">
                <name>Nozzle protein</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>3</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="10760">Enterobacteria phage T7</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Portal protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="10760">Enterobacteria phage T7</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.05917398399999999</theoretical>
                </molecular_weight>
                <number_of_copies>12</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MAEKRTGLAEDGAKSVYERLKNDRAPYETRAQNCAQYTIPSLFPKDSDNASTDYQTPWQAVGARGLNNLASKLMLALFPM
QTWMRLTISEYEAKQLLSDPDGLAKVDEGLSMVERIIMNYIESNSYRVTLFEALKQLVVAGNVLLYLPEPEGSNYNPMKL
YRLSSYVVQRDAFGNVLQMVTRDQIAFGALPEDIRKAVEGQGGEKKADETIDVYTHIYLDEDSGEYLRYEEVEGMEVQGS
DGTYPKEACPYIPIRMVRLDGESYGRSYIEEYLGDLRSLENLQEAIVKMSMISSKVIGLVNPAGITQPRRLTKAQTGDFV
TGRPEDISFLQLEKQADFTVAKAVSDAIEARLSFAFMLNSAVQRTGERVTAEEIRYVASELEDTLGGVYSILSQELQLPL
VRVLLKQLQATQQIPELPKEAVEPTISTGLEAIGRGQDLDKLERCVTAWAALAPMRDDPDINLAMIKLRIANAIGIDTSG
ILLTEEQKQQKMAQQSMQMGMDNGAAALAQGMAAQATASPEAMAAAADSVGLQPGI</string>
                    <external_references type="UNIPROTKB">P03728</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Tail tubular protein gp11</name>
                <natural_source database="NCBI">
                    <organism ncbi="10760">Enterobacteria phage T7</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.026202819999999998</theoretical>
                </molecular_weight>
                <number_of_copies>12</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MRGSHHHHHHGMASMTGGNNMGRDLYDDDDKDPSSMRSYDMNVETAAELSAVNDILASIGEPPVSTLEGDANADAANARR
ILNKINRQIQSRGWTFNIEEGITLLPDVYSNLIVYSDDYLSLMSTSGQSIYVNRGGYVYDRTSQSDRFDSGITVNIIRLR
DYDEMPECFRYWIVTKASRQFNNRFFGAPEVEGVLQEEEDEARRLCMEYEMDYGGYNMLDGDAFTSGLLTR</string>
                    <external_references type="UNIPROTKB">P03746</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>Tail tubular protein gp12</name>
                <natural_source database="NCBI">
                    <organism ncbi="10760">Enterobacteria phage T7</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.089480594</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>MALISQSIKNLKGGISQQPDILRYPDQGSRQVNGWSSETEGLQKRPPLVFLNTLGDNGALGQAPYIHLINRDEHEQYYAV
FTGSGIRVFDLSGNEKQVRYPNGSNYIKTANPRNDLRMVTVADYTFIVNRNVVAQKNTKSVNLPNYNPNQDGLINVRGGQ
YGRELIVHINGKDVAKYKIPDGSQPEHVNNTDAQWLAEELAKQMRTNLSDWTVNVGQGFIHVTAPSGQQIDSFTTKDGYA
DQLINPVTHYAQSFSKLPPNAPNGYMVKIVGDASKSADQYYVRYDAERKVWTETLGWNTEDQVLWETMPHALVRAADGNF
DFKWLEWSPKSCGDVDTNPWPSFVGSSINDVFFFRNRLGFLSGENIILSRTAKYFNFYPASIANLSDDDPIDVAVSTNRI
AILKYAVPFSEELLIWSDEAQFVLTASGTLTSKSVELNLTTQFDVQDRARPFGIGRNVYFASPRSSFTSIHRYYAVQDVS
SVKNAEDITSHVPNYIPNGVFSICGSGTENFCSVLSHGDPSKIFMYKFLYLNEELRQQSWSHWDFGENVQVLACQSISSD
MYVILRNEFNTFLARISFTKNAIDLQGEPYRAFMDMKIRYTIPSGTYNDDTFTTSIHIPTIYGANFGRGKITVLEPDGKI
TVFEQPTAGWNSDPWLRLSGNLEGRMVYIGFNINFVYEFSKFLIKQTADDGSTSTEDIGRLQLRRAWVNYENSGTFDIYV
ENQSSNWKYTMAGARLGSNTLRAGRLNLGTGQYRFPVVGNAKFNTVYILSDETTPLNIIGCGWEGNYLRRSSGI</string>
                    <external_references type="UNIPROTKB">P03747</external_references>
                </sequence>
            </protein_or_peptide>
        </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">0.8</concentration>
                    <buffer>
                        <ph>7.8</ph>
                        <component>
                            <concentration units="mM">100.0</concentration>
                            <formula>NaCl</formula>
                        </component>
                        <component>
                            <concentration units="mM">10.0</concentration>
                            <formula>MgCl2</formula>
                        </component>
                        <component>
                            <concentration units="mM">50.0</concentration>
                            <formula>Tris-HCl</formula>
                        </component>
                        <details>50 mM Tris-HCl pH 7.8, 100 mM NaCl, 10 mM MgCl2</details>
                    </buffer>
                    <grid>
                        <model>Quantifoil R2/2</model>
                        <material>COPPER/RHODIUM</material>
                        <mesh>300</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY</film_topology>
                        </support_film>
                        <details>acetone and treated with 0.1% w/v poly-L-Lysine (Sigma) for 1 min in water</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">95</chamber_humidity>
                        <chamber_temperature units="K">295.15</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                    </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>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <alignment_procedure>
                        <coma_free/>
                    </alignment_procedure>
                    <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>
                            <average_electron_dose_per_image units="e/Å^2">0.84</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="INSILICO MODEL"/>
                <final_reconstruction>
                    <applied_symmetry>
                        <point_group>C6</point_group>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">3.33</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                        </software>
                    </software_list>
                    <number_images_used>92382</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <software_list>
                        <software>
                            <name>RELION</name>
                        </software>
                    </software_list>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
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        <file>emd_4706.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>350</col>
            <row>350</row>
            <sec>350</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>350</x>
            <y>350</y>
            <z>350</z>
        </spacing>
        <cell>
            <a units="Å">366.8</a>
            <b units="Å">366.8</b>
            <c units="Å">366.8</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>-0.002652</minimum>
            <maximum>0.255892</maximum>
            <average>0.00077379897</average>
            <std>0.006800785</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.048</x>
            <y units="Å">1.048</y>
            <z units="Å">1.048</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.0113</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-4706::::</label>
        <annotation_details>Bacteriophage ejection complex</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>6QWP</access_code>
                    <chain>
                        <source_name>PDB</source_name>
                        <initial_model_type>experimental model</initial_model_type>
                    </chain>
                </initial_model>
                <refinement_protocol>RIGID BODY FIT</refinement_protocol>
                <refinement_space>REAL</refinement_space>
            </modelling>
            <modelling>
                <initial_model>
                    <access_code>5MU4</access_code>
                    <chain>
                        <source_name>PDB</source_name>
                        <initial_model_type>experimental model</initial_model_type>
                    </chain>
                </initial_model>
                <refinement_protocol>RIGID BODY FIT</refinement_protocol>
            </modelling>
            <modelling>
                <refinement_protocol>AB INITIO MODEL</refinement_protocol>
            </modelling>
        </modelling_list>
    </interpretation>
</emd>
