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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>2016-01-15</deposition>
            <header_release>2016-03-09</header_release>
            <map_release>2016-03-09</map_release>
            <update>2016-04-27</update>
        </key_dates>
        <title>3D structure determination of the human *U4/U6.U5* tri-snRNP complex</title>
        <authors_list>
            <author>Agafonov DE</author>
            <author>Kastner B</author>
            <author>Dybkov O</author>
            <author>Hofele RV</author>
            <author>Liu WT</author>
            <author>Urlaub H</author>
            <author>Luhrmann R</author>
            <author>Stark H</author>
        </authors_list>
        <keywords>snRNP, splicing, spliceosome, human</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Agafonov DE</author>
                    <author order="2">Kastner B</author>
                    <author order="3">Dybkov O</author>
                    <author order="4">Hofele RV</author>
                    <author order="5">Liu WT</author>
                    <author order="6">Urlaub H</author>
                    <author order="7">Luhrmann R</author>
                    <author order="8">Stark H</author>
                    <title>Molecular architecture of the human U4/U6.U5 tri-snRNP.</title>
                    <journal>SCIENCE</journal>
                    <volume>351</volume>
                    <first_page>1416</first_page>
                    <last_page>1420</last_page>
                    <year>2016</year>
                    <external_references type="PUBMED">26912367</external_references>
                    <external_references type="DOI">doi:10.1126/science.aad2085</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>3jcr</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>human U4/U6.U5 tri-snRNP</name>
        <supramolecule_list>
            <sample_supramolecule supramolecule_id="1000">
                <name>human U4/U6.U5 tri-snRNP</name>
                <oligomeric_state>monomer</oligomeric_state>
                <number_unique_components>1</number_unique_components>
                <molecular_weight>
                    <experimental units="MDa">1.8</experimental>
                </molecular_weight>
            </sample_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>U4/U6.U5 tri-snRNP</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                    <synonym_organism>Human</synonym_organism>
                    <cell>Hela</cell>
                    <cellular_location>Nucleus</cellular_location>
                </natural_source>
                <molecular_weight>
                    <experimental units="MDa">1.8</experimental>
                </molecular_weight>
                <recombinant_exp_flag>false</recombinant_exp_flag>
                <recombinant_expression database="NCBI" />
                <sequence />
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
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                <single_particle_preparation preparation_id="1">
                    <concentration units="mg/mL">0.1</concentration>
                    <buffer>
                        <ph>7.9</ph>
                        <details>20 mM HEPES, pH 7.9, 100 mM KCl, 5 mM MgCl2, 0.1 mM EDTA</details>
                    </buffer>
                    <grid>
                        <details>200 mesh copper grid with carbon support film</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">95</chamber_humidity>
                        <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>
                    <nominal_cs units="mm">0.0001</nominal_cs>
                    <nominal_defocus_min units="&#181;m">1.0</nominal_defocus_min>
                    <nominal_defocus_max units="&#181;m">5.35</nominal_defocus_max>
                    <calibrated_magnification>74000.0</calibrated_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <date>2015-09-10</date>
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                        <image_recording>
                            <film_or_detector_model category="CCD">FEI FALCON II (4k x 4k)</film_or_detector_model>
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                            <average_electron_dose_per_image units="e/&#8491;^2">45</average_electron_dose_per_image>
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                    <resolution res_type="BY AUTHOR" units="&#8491;">7.0</resolution>
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        <file>emd_6581.map.gz</file>
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            <space_group>1</space_group>
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        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
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            <col>220</col>
            <row>220</row>
            <sec>220</sec>
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            <a units="&#8491;">440.0</a>
            <b units="&#8491;">440.0</b>
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            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
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            <fast>X</fast>
            <medium>Y</medium>
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            <contour primary="true">
                <level>0.13</level>
                <source>AUTHOR</source>
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        </contour_list>
        <annotation_details>Reconstruction of human tri-snRNP</annotation_details>
        <details>::::EMDATABANK.org::::EMD-6581::::</details>
    </map>
    <interpretation>
        <figure_list>
            <figure>
                <file>emd_6581.jpg</file>
            </figure>
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    </interpretation>
</emd>