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    <admin>
        <current_status>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2013-12-19</deposition>
            <header_release>2014-02-05</header_release>
            <map_release>2014-02-19</map_release>
            <update>2014-04-23</update>
        </key_dates>
        <title>Subtomogram average of a virus-associated pyramid</title>
        <authors_list>
            <author>Daum B</author>
            <author>Kuehlbrandt W</author>
        </authors_list>
        <keywords>VAP, archaeovirus, archaea, SIRV2, Sulfolobus islandicus, viral egress</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Daum B</author>
                    <author order="2">Quax TE</author>
                    <author order="3">Sachse M</author>
                    <author order="4">Mills DJ</author>
                    <author order="5">Reimann J</author>
                    <author order="6">Yildiz O</author>
                    <author order="7">Hader S</author>
                    <author order="8">Saveanu C</author>
                    <author order="9">Forterre P</author>
                    <author order="10">Albers SV</author>
                    <author order="11">Kuhlbrandt W</author>
                    <author order="12">Prangishvili D</author>
                    <title>Self-assembly of the general membrane-remodeling protein PVAP into sevenfold virus-associated pyramids.</title>
                    <journal>PROC.NAT.ACAD.SCI.USA</journal>
                    <volume>111</volume>
                    <first_page>3829</first_page>
                    <last_page>3834</last_page>
                    <year>2014</year>
                    <external_references type="PUBMED">24567401</external_references>
                    <external_references type="DOI">doi:10.1073/pnas.1319245111</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
    </crossreferences>
    <sample>
        <name>Reconstruction of a virus-associated pyramid induced by overexpressing the viral protein PVAP in E. coli</name>
        <supramolecule_list>
            <sample_supramolecule supramolecule_id="1000">
                <name>Reconstruction of a virus-associated pyramid induced by overexpressing the viral protein PVAP in E. coli</name>
                <number_unique_components>1</number_unique_components>
            </sample_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name synonym="P98, PVAP">protein forming virus-associated pyramids</name>
                <natural_source database="NCBI">
                    <organism ncbi="157899">Sulfolobus islandicus rod-shaped virus 2</organism>
                    <cellular_location>Plasma membrane</cellular_location>
                </natural_source>
                <molecular_weight>
                    <experimental units="MDa">0.01</experimental>
                    <theoretical units="MDa">0.01</theoretical>
                </molecular_weight>
                <details>The gene encoding PVAP was heterologously overexpressed in E. coli to incorporate pyramid-shaped multimers of PVAP into the plasma membrane.</details>
                <oligomeric_state>Multimer</oligomeric_state>
                <recombinant_exp_flag>true</recombinant_exp_flag>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                    <recombinant_strain>Rosetta(DE3)pLys</recombinant_strain>
                    <recombinant_plasmid>pSA4</recombinant_plasmid>
                </recombinant_expression>
                <sequence>
                    <external_references type="UNIPROTKB">Q8V9M0</external_references>
                    <external_references type="GO">GO:0951408</external_references>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>subtomogramAveraging</method>
            <aggregation_state>particle</aggregation_state>
            <specimen_preparation_list>
                <subtomogram_averaging_preparation preparation_id="1">
                    <buffer>
                        <ph>7.0</ph>
                        <details>50 mM Tris, 300 mM NaCl</details>
                    </buffer>
                    <grid>
                        <details>Quantifoil 300 mesh R2/2, glow-discharged</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">10</chamber_humidity>
                        <instrument>HOMEMADE PLUNGER</instrument>
                        <method>Blot for 3-5 seconds from the side where the sample was applied.</method>
                    </vitrification>
                </subtomogram_averaging_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <subtomogram_averaging_microscopy microscopy_id="1">
                    <microscope>FEI POLARA 300</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">2.2</nominal_cs>
                    <nominal_defocus_min units="&#181;m">8.0</nominal_defocus_min>
                    <nominal_defocus_max units="&#181;m">10.0</nominal_defocus_max>
                    <nominal_magnification>27500.0</nominal_magnification>
                    <calibrated_magnification>16870.0</calibrated_magnification>
                    <specimen_holder_model>OTHER</specimen_holder_model>
                    <temperature>
                        <temperature_min units="K">89</temperature_min>
                        <temperature_max units="K">96</temperature_max>
                        <temperature_average units="K">90</temperature_average>
                    </temperature>
                    <alignment_procedure>
                        <legacy>
                            <astigmatism>Objective lens astigmatism was corrected at 40,000 times magnification</astigmatism>
                        </legacy>
                    </alignment_procedure>
                    <specialist_optics>
                        <energy_filter>
                            <name>Gatan Tridium GIF</name>
                        </energy_filter>
                    </specialist_optics>
                    <date>2012-03-12</date>
                    <image_recording_list>
                        <image_recording>
                            <film_or_detector_model category="CCD">GATAN ULTRASCAN 1000 (2k x 2k)</film_or_detector_model>
                            <bits_per_pixel>32.</bits_per_pixel>
                        </image_recording>
                    </image_recording_list>
                    <specimen_holder>liquid nitrogen cooled</specimen_holder>
                    <tilt_series>
                        <axis1>
                            <min_angle units="deg">-60.73</min_angle>
                            <max_angle units="deg">59.20</max_angle>
                        </axis1>
                    </tilt_series>
                </subtomogram_averaging_microscopy>
            </microscopy_list>
            <subtomogram_averaging_processing image_processing_id="1">
                <final_reconstruction>
                    <software_list>
                        <software>
                            <name>PEET, IMOD</name>
                        </software>
                    </software_list>
                    <number_subtomograms_used>57</number_subtomograms_used>
                </final_reconstruction>
            </subtomogram_averaging_processing>
        </structure_determination>
    </structure_determination_list>
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            <beta units="deg">90.0</beta>
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        <axis_order>
            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
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        <statistics>
            <minimum>161.271331790000005</minimum>
            <maximum>179.423156739999996</maximum>
            <average>169.777954099999988</average>
            <std>1.47277522</std>
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            <contour primary="true">
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                <source>AUTHOR</source>
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        <annotation_details>Reconstruction of a virus associated pyramid</annotation_details>
        <details>::::EMDATABANK.org::::EMD-5844::::</details>
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