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    <admin>
        <current_status>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2004-09-13</deposition>
            <header_release>2004-09-23</header_release>
            <map_release>2006-09-23</map_release>
            <update>2011-05-26</update>
        </key_dates>
        <title>Nuclear pore complex structure and dynamics revealed by cryoelectron tomography.</title>
        <authors_list>
            <author>Beck M</author>
            <author>Forster F</author>
            <author>Ecke M</author>
            <author>Plitzko JM</author>
            <author>Melchior F</author>
            <author>Gerisch G</author>
            <author>Baumeister W</author>
            <author>Medalia O</author>
        </authors_list>
        <keywords />
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Beck M</author>
                    <author order="2">Forster F</author>
                    <author order="3">Ecke M</author>
                    <author order="4">Plitzko JM</author>
                    <author order="5">Melchior F</author>
                    <author order="6">Gerisch G</author>
                    <author order="7">Baumeister W</author>
                    <author order="8">Medalia O</author>
                    <title>Nuclear pore complex structure and dynamics revealed by cryoelectron tomography.</title>
                    <journal>SCIENCE</journal>
                    <volume>306</volume>
                    <first_page>1387</first_page>
                    <last_page>1390</last_page>
                    <year>2004</year>
                    <external_references type="PUBMED">15514115</external_references>
                    <external_references type="DOI">doi:10.1126/science.1104808</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
    </crossreferences>
    <sample>
        <name>nuclear pore complex</name>
        <supramolecule_list>
            <sample_supramolecule supramolecule_id="1000">
                <name>nuclear pore complex</name>
                <number_unique_components>1</number_unique_components>
            </sample_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>nuclear pore complex</name>
                <natural_source database="NCBI">
                    <organism ncbi="44689">Dictyostelium discoideum</organism>
                    <strain>AX2</strain>
                    <organelle>Nucleus</organelle>
                    <cellular_location>Nucleus</cellular_location>
                </natural_source>
                <recombinant_exp_flag>false</recombinant_exp_flag>
                <recombinant_expression database="NCBI" />
                <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>
                        <details>50 mM Tris pH 7.6, 25 mM KCl, 5mM MgCl2, 50 mM sucrose</details>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <instrument>HOMEMADE PLUNGER</instrument>
                        <details>Vitrification instrument: Rudolf Gatz plunger</details>
                    </vitrification>
                </subtomogram_averaging_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <subtomogram_averaging_microscopy microscopy_id="1">
                    <microscope>FEI/PHILIPS CM300FEG/T</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">2.0</nominal_cs>
                    <nominal_magnification>17500.0</nominal_magnification>
                    <specimen_holder_model>GATAN LIQUID NITROGEN</specimen_holder_model>
                    <temperature>
                        <temperature_average units="K">90</temperature_average>
                    </temperature>
                    <specialist_optics>
                        <energy_filter>
                            <name>GIF2000</name>
                            <lower_energy_threshold units="eV">0.0</lower_energy_threshold>
                            <upper_energy_threshold units="eV">20.0</upper_energy_threshold>
                        </energy_filter>
                    </specialist_optics>
                    <image_recording_list>
                        <image_recording>
                            <film_or_detector_model category="CCD">GATAN MULTISCAN</film_or_detector_model>
                        </image_recording>
                    </image_recording_list>
                    <specimen_holder>Eucentric</specimen_holder>
                    <tilt_series>
                        <axis1>
                            <max_angle units="deg">63</max_angle>
                        </axis1>
                    </tilt_series>
                </subtomogram_averaging_microscopy>
            </microscopy_list>
            <subtomogram_averaging_processing image_processing_id="1">
                <details>Average number of projections used in the 3D reconstructions: 267.</details>
                <final_reconstruction>
                    <algorithm>OTHER</algorithm>
                    <resolution res_type="BY AUTHOR" units="&#8491;">85.0</resolution>
                    <resolution_method>FSC 0.5 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>TOM</name>
                        </software>
                    </software_list>
                    <details>3D reconstruction by averaging of subtomograms</details>
                </final_reconstruction>
            </subtomogram_averaging_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="8193">
        <file>emd_1097.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>128</col>
            <row>128</row>
            <sec>128</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
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        <spacing>
            <x>128</x>
            <y>128</y>
            <z>128</z>
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        <cell>
            <a units="&#8491;">2099.2</a>
            <b units="&#8491;">2099.2</b>
            <c units="&#8491;">2099.2</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>-3.05764</minimum>
            <maximum>3.81137</maximum>
            <average>0.0933206</average>
            <std>0.55606</std>
        </statistics>
        <pixel_spacing>
            <x units="&#8491;">16.4</x>
            <y units="&#8491;">16.4</y>
            <z units="&#8491;">16.4</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>1.22</level>
            </contour>
        </contour_list>
        <annotation_details>3D structure of the Dictyostelium nuclear pore
      complex obtained by Cryoelectron Tomography</annotation_details>
        <details>::::EMDATABANK.org::::EMD-1097::::</details>
    </map>
</emd>