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            <date>2018-11-28</date>
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            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
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        <key_dates>
            <deposition>2016-06-06</deposition>
            <header_release>2016-06-22</header_release>
            <map_release>2016-06-22</map_release>
            <update>2018-11-28</update>
        </key_dates>
        <title>Structure of a hexagonal assembly of the PFV glycoprotein from the iFuse Env mutant by cryo-electron microscopy</title>
        <authors_list>
            <author>Effantin G</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Effantin G</author>
                    <author order="2">Estrozi LF</author>
                    <author order="3">Aschman N</author>
                    <author order="4">Renesto P</author>
                    <author order="5">Stanke N</author>
                    <author order="6">Lindemann D</author>
                    <author order="7">Schoehn G</author>
                    <author order="8">Weissenhorn W</author>
                    <title>Cryo-electron Microscopy Structure of the Native Prototype Foamy Virus Glycoprotein and Virus Architecture.</title>
                    <journal_abbreviation>Plos Pathog.</journal_abbreviation>
                    <country>US</country>
                    <volume>12</volume>
                    <first_page>e1005721</first_page>
                    <last_page>e1005721</last_page>
                    <year>2016</year>
                    <external_references type="PUBMED">27399201</external_references>
                    <external_references type="DOI">doi:10.1371/journal.ppat.1005721</external_references>
                    <external_references type="ISSN">1553-7374</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-4013</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
                </relationship>
                <details>Structure of a hexagonal assembly of the PFV iFuse glycoprotein by single particle cryo-EM</details>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-4007</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>Low resolution Structure of a hexagonal assembly of the PFV iFuse glycoprotein by subtomogram averaging</details>
            </emdb_reference>
        </emdb_list>
    </crossreferences>
    <sample>
        <name>Human spumaretrovirus</name>
        <supramolecule_list>
            <virus_supramolecule supramolecule_id="1">
                <name>Human spumaretrovirus</name>
                <parent>0</parent>
                <details>Mutant in the Env polyprotein</details>
                <sci_species_name ncbi="11963">Human spumaretrovirus</sci_species_name>
                <host_system database="NCBI">
                    <recombinant_organism ncbi="9606">Homo sapiens</recombinant_organism>
                    <recombinant_plasmid>pcoPG4, pcoPE32, pcoPP</recombinant_plasmid>
                </host_system>
                <molecular_weight>
                    <theoretical units="MDa">0.33</theoretical>
                </molecular_weight>
                <virus_type>VIRION</virus_type>
                <virus_isolate>SPECIES</virus_isolate>
                <virus_enveloped>true</virus_enveloped>
                <virus_empty>false</virus_empty>
            </virus_supramolecule>
        </supramolecule_list>
    </sample>
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        <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>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <details />
                    </vitrification>
                    <details>The iFuse mutant is a variant of Env where the furine cleavage site between the SUrface (gp80 SU ) and TransMembrane (gp48 TM ) domains of Env has been mutated. This results in a partially processed glycoprotein as the cleavage between the LP and SU domains is preserved. Particles are released at nearly wild type level from cells but are non-infectious.</details>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>FEI TECNAI F30</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>
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                        </image_recording>
                    </image_recording_list>
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            <singleparticle_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <ctf_correction>
                    <software_list>
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                            <name>CTFFIND</name>
                            <version>4</version>
                        </software>
                    </software_list>
                </ctf_correction>
                <startup_model type_of_model="OTHER">
                    <details>Initial model is from subtomogram averaging</details>
                </startup_model>
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                    <applied_symmetry>
                        <point_group>C3</point_group>
                    </applied_symmetry>
                    <resolution res_type="BY AUTHOR" units="&#8491;">8.8</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                        </software>
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                    <number_images_used>5543</number_images_used>
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                <initial_angle_assignment>
                    <type>PROJECTION MATCHING</type>
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                    <software_list>
                        <software>
                            <name>RELION</name>
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                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing />
                    <software_list>
                        <software>
                            <name>RELION</name>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
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