<emd emdb_id="EMD-5130" version="3.0.1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://github.com/emdb-empiar/emdb-schemas/blob/master/v3/v3_0_1_1/emdb_relaxed.xsd">
    <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>2009-08-18</deposition>
            <header_release>2009-12-21</header_release>
            <map_release>2009-12-21</map_release>
            <update>2011-09-23</update>
        </key_dates>
        <title>3D cryo-EM Structure of Archaeal 20S Proteasome in Complex with the C-terminus of PAN</title>
        <authors_list>
            <author>Yu Y</author>
            <author>Smith DM</author>
            <author>Kim H</author>
            <author>Rodriguez V</author>
            <author>Goldberg AL</author>
            <author>Cheng Y</author>
        </authors_list>
        <keywords>Proteasome, proteasomal ATPase, protein degradation, AAA ATPase, x-ray crystallography, electron cryomicroscopy</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Yu Y</author>
                    <author order="2">Smith DM</author>
                    <author order="3">Kim HM</author>
                    <author order="4">Rodriguez V</author>
                    <author order="5">Goldberg AL</author>
                    <author order="6">Cheng Y</author>
                    <title>Interactions of PAN's C-termini with archaeal 20S proteasome and implications for the eukaryotic proteasome-ATPase interactions.</title>
                    <journal>EMBO J.</journal>
                    <volume>29</volume>
                    <first_page>692</first_page>
                    <last_page>702</last_page>
                    <year>2010</year>
                    <external_references type="PUBMED">20019667</external_references>
                    <external_references type="DOI">doi:10.1038/emboj.2009.382</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
    </crossreferences>
    <sample>
        <name>Archaeal 20S proteasome in complex with a hybrid of PA26 and PAN</name>
        <supramolecule_list>
            <sample_supramolecule supramolecule_id="1000">
                <name>Archaeal 20S proteasome in complex with a hybrid of PA26 and PAN</name>
                <details>Proteins were expressed from E.coli.</details>
                <oligomeric_state>20S proteasome is composed of 4 heptamer rings coaxially stacked to which heptamers of the PA26 PAN hybrid cap on both ends</oligomeric_state>
                <number_unique_components>3</number_unique_components>
                <molecular_weight>
                    <theoretical units="MDa">1.1</theoretical>
                </molecular_weight>
            </sample_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name synonym="20S proteasome, PA26-PAN">20S proteasome, PA26-PAN</name>
                <natural_source database="NCBI">
                    <organism ncbi="2303">Thermoplasma acidophilum</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">1.1</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <oligomeric_state>2 heptamers of 20S alpha subunit, 2 heptamers of 20S beta subunit, and 2 heptamers of PA26-PAN</oligomeric_state>
                <recombinant_exp_flag>true</recombinant_exp_flag>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                    <recombinant_plasmid>pRSET-A, pET-15b</recombinant_plasmid>
                </recombinant_expression>
                <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">0.3</concentration>
                    <buffer>
                        <ph>8.5</ph>
                        <details>50 mM Tris pH 8.5, 1mM DTT, 10 mM MgCl2, 5% Glycerol</details>
                    </buffer>
                    <grid>
                        <details>400 mesh Cu grids</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">90</chamber_temperature>
                        <instrument>OTHER</instrument>
                        <details>Vitrification instrument: Vitrobot</details>
                        <method>blot for 4 seconds before plunging</method>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>FEI TECNAI F20</microscope>
                    <illumination_mode>FLOOD BEAM</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">200</acceleration_voltage>
                    <nominal_cs units="mm">2.0</nominal_cs>
                    <nominal_defocus_min units="&#181;m">1.0</nominal_defocus_min>
                    <nominal_defocus_max units="&#181;m">5.0</nominal_defocus_max>
                    <nominal_magnification>62000.0</nominal_magnification>
                    <specimen_holder_model>GATAN LIQUID NITROGEN</specimen_holder_model>
                    <temperature>
                        <temperature_min units="K">90</temperature_min>
                        <temperature_max units="K">90</temperature_max>
                        <temperature_average units="K">90</temperature_average>
                    </temperature>
                    <details>data was collected using Leginon</details>
                    <date>2007-09-17</date>
                    <image_recording_list>
                        <image_recording>
                            <film_or_detector_model category="CCD">GENERIC GATAN (4k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/&#8491;^2">20</average_electron_dose_per_image>
                            <details>images were recorded on CCD camera</details>
                        </image_recording>
                    </image_recording_list>
                    <specimen_holder>Gatan CT-3500</specimen_holder>
                    <tilt_angle_min>0</tilt_angle_min>
                    <tilt_angle_max>0</tilt_angle_max>
                </single_particle_microscopy>
            </microscopy_list>
            <singleparticle_processing image_processing_id="1">
                <details>The particles were manually selected</details>
                <ctf_correction>
                    <details>each particle</details>
                </ctf_correction>
                <final_reconstruction>
                    <algorithm>OTHER</algorithm>
                    <resolution res_type="BY AUTHOR" units="&#8491;">7.5</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>FREALIGN</name>
                        </software>
                    </software_list>
                    <details>D7 symmetry was applied</details>
                    <number_images_used>13020</number_images_used>
                </final_reconstruction>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="10304">
        <file>emd_5130.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>116</col>
            <row>116</row>
            <sec>196</sec>
        </dimensions>
        <origin>
            <col>-58</col>
            <row>-58</row>
            <sec>-98</sec>
        </origin>
        <spacing>
            <x>116</x>
            <y>116</y>
            <z>196</z>
        </spacing>
        <cell>
            <a units="&#8491;">207.76</a>
            <b units="&#8491;">207.76</b>
            <c units="&#8491;">351.04</c>
            <alpha units="deg">90</alpha>
            <beta units="deg">90</beta>
            <gamma units="deg">90</gamma>
        </cell>
        <axis_order>
            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
        </axis_order>
        <statistics>
            <minimum>-2.91739</minimum>
            <maximum>3.55491</maximum>
            <average>0.0676975</average>
            <std>0.492819</std>
        </statistics>
        <pixel_spacing>
            <x units="&#8491;">1.79103</x>
            <y units="&#8491;">1.79103</y>
            <z units="&#8491;">1.79102</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>1.3</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <annotation_details>This is the 3D volume of T.acidophilum 20S proteasome in complex with a hybrid activator of PA26 and PAN</annotation_details>
        <details>::::EMDATABANK.org::::EMD-5130::::</details>
    </map>
</emd>