<?xml version="1.0" encoding="UTF-8"?>
<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://ftp.ebi.ac.uk/pub/databases/em_ebi/emdb_related/emdb-schemas/emdb_schemas/v3/v3_0_9_2/emdb.xsd" version="3.0.9.2" emdb_id="EMD-17536">
    <admin>
        <current_status>
            <date>2024-03-27</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2023-05-30</deposition>
            <header_release>2024-03-20</header_release>
            <map_release>2024-03-20</map_release>
            <update>2024-03-27</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Medical Research Council (MRC, United Kingdom)</funding_body>
                <code>MR/V009354/1</code>
                <country>United Kingdom</country>
            </grant_reference>
        </grant_support>
        <title>Cryo-EM structure of CDK7 subunit of CAK in complex with inhibitor LDC4297</title>
        <authors_list>
            <author>Cushing VI</author>
            <author>Koh AF</author>
            <author>Feng J</author>
            <author>Jurgaityte K</author>
            <author>Bahl AK</author>
            <author>Ali S</author>
            <author>Kotecha A</author>
            <author>Greber BJ</author>
        </authors_list>
        <keywords>Kinase, Inhibitor, Transcription, Cell Cycle, TRANSFERASE</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Cushing VI</author>
                    <author order="2">Koh AF</author>
                    <author order="3">Feng J</author>
                    <author order="4">Jurgaityte K</author>
                    <author order="5">Bondke A</author>
                    <author order="6">Kroll SHB</author>
                    <author order="7">Barbazanges M</author>
                    <author order="8">Scheiper B</author>
                    <author order="9">Bahl AK</author>
                    <author order="10">Barrett AGM</author>
                    <author order="11">Ali S</author>
                    <author order="12">Kotecha A</author>
                    <author order="13">Greber BJ</author>
                    <title>High-resolution cryo-EM of the human CDK-activating kinase for structure-based drug design.</title>
                    <journal_abbreviation>Nat Commun</journal_abbreviation>
                    <country>UK</country>
                    <volume>15</volume>
                    <first_page>2265</first_page>
                    <last_page>2265</last_page>
                    <year>2024</year>
                    <external_references type="PUBMED">38480681</external_references>
                    <external_references type="DOI">doi:10.1038/s41467-024-46375-9</external_references>
                    <external_references type="ISSN">2041-1723</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-17129</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>Cryo-EM structure of CAK-THZ1</details>
            </emdb_reference>
        </emdb_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>8p7l</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>CDK-activating kinase</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>CDK-activating kinase</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>CAK in complex with non-covalent inhibitor LDC4297. Only CDK7 and regions of MAT1 are present in the model, but the sample also contains cyclin H, the third CAK subunit.</details>
                <molecular_weight>
                    <theoretical units="MDa">0.085</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>CDK-activating kinase assembly factor MAT1</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.038132339999999994</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7111">Trichoplusia ni</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MGSSHHHHHHENLYFQSNAMDDQGCPRCKTTKYRNPSLKLMVNVCGHTLCESCVDLLFVRGAGNCPECGTPLRKSNFRVQ
LFEDPTVDKEVEIRKKVLKIYNKREEDFPSLREYNDFLEEVEEIVFNLTNNVDLDNTKKKMEIYQKENKDVIQKNKLKLT
REQEELEEALEVERQENEQRRLFIQKEEQLQQILKRKNKQAFLDELESSDLPVALLLAQHKDRSTQLEMQLEKPKPVKPV
TFSTGIKMGQHISLAPIHKLEEALYEYQPLQIETYGPHVPELEMLGRLGYLNHVRAASPQDLAGGYTSSLACHRALQDAF
SGLFWQPS</string>
                    <external_references type="UNIPROTKB">P51948</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Cyclin-dependent kinase 7</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.042107371</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7111">Trichoplusia ni</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>SNAYSPTSPSYAPTAPAYSPTSPSGGSGSGSSGMALDVKSRAKRYEKLDFLGEGQFATVYKARDKNTNQIVAIKKIKLGH
RSEAKDGINRTALREIKLLQELSHPNIIGLLDAFGHKSNISLVFDFMETDLEVIIKDNSLVLTPSHIKAYMLMTLQGLEY
LHQHWILHRDLKPNNLLLDENGVLKLADFGLAKSFGSPNRAYTHQVVTRWYRAPELLFGARMYGVGVDMWAVGCILAELL
LRVPFLPGDSDLDQLTRIFETLGTPTEEQWPDMCSLPDYVTFKSFPGIPLHHIFSAAGDDLLDLIQGLFLFNPCARITAT
QALKMKYFSNRPGPTPGCQLPRPNCPVETLKEQSNPALAIKRKRTEALEQGGLPKKLIF</string>
                    <external_references type="UNIPROTKB">P50613</external_references>
                </sequence>
                <ec_number>2.7.11.22</ec_number>
            </protein_or_peptide>
            <ligand macromolecule_id="3">
                <name>2-[(3S)-piperidin-3-yl]oxy-8-propan-2-yl-N-[(2-pyrazol-1-ylphenyl)methyl]pyrazolo[1,5-a][1,3,5]triazin-4-amine</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000432521</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <formula>WD9</formula>
            </ligand>
            <ligand macromolecule_id="4">
                <name>water</name>
                <molecular_weight>
                    <theoretical units="MDa">1.8015e-05</theoretical>
                </molecular_weight>
                <number_of_copies>42</number_of_copies>
                <formula>HOH</formula>
            </ligand>
        </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">0.4</concentration>
                    <buffer>
                        <ph>7.9</ph>
                        <component>
                            <concentration units="mM">200.0</concentration>
                            <formula>KCl</formula>
                            <name>Potassium chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">2.0</concentration>
                            <formula>MgCl2</formula>
                            <name>Magnesium chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">20.0</concentration>
                            <name>HEPES-KOH</name>
                        </component>
                        <component>
                            <concentration units="mM">5.0</concentration>
                            <name>Beta-mercaptoethanol</name>
                        </component>
                    </buffer>
                    <grid>
                        <model>Quantifoil R1.2/1.3</model>
                        <material>GOLD</material>
                        <mesh>300</mesh>
                        <support_film film_type_id="1">
                            <film_material>GOLD</film_material>
                            <film_topology>HOLEY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>PLASMA CLEANING</type>
                            <time units="s">50</time>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">278</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>TFS 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>
                    <c2_aperture_diameter units="µm">50.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">0.4</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.0</nominal_defocus_max>
                    <calibrated_magnification>245614.0</calibrated_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <alignment_procedure>
                        <coma_free/>
                    </alignment_procedure>
                    <specialist_optics>
                        <energy_filter>
                            <name>TFS Selectris X</name>
                            <slit_width units="eV">10</slit_width>
                        </energy_filter>
                    </specialist_optics>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>TFS FALCON 4i (4k x 4k)</film_or_detector_model>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>9553</number_real_images>
                            <average_electron_dose_per_image units="e/Å^2">70.0</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
                </single_particle_microscopy>
            </microscopy_list>
            <singleparticle_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <startup_model type_of_model="EMDB MAP">
                    <emdb_id>EMD-22123</emdb_id>
                </startup_model>
                <final_reconstruction>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">2.1</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>4.0 beta</version>
                        </software>
                    </software_list>
                    <number_images_used>273097</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>4.0 beta</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>4.0 beta</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>4.0 beta</version>
                        </software>
                    </software_list>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="131073">
        <file>emd_17536.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>320</col>
            <row>320</row>
            <sec>320</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>320</x>
            <y>320</y>
            <z>320</z>
        </spacing>
        <cell>
            <a units="Å">273.6</a>
            <b units="Å">273.6</b>
            <c units="Å">273.6</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
        </cell>
        <axis_order>
            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
        </axis_order>
        <statistics>
            <minimum>-0.052522637</minimum>
            <maximum>0.09506588</maximum>
            <average>0.0000042648785</average>
            <std>0.0018323507</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">0.855</x>
            <y units="Å">0.855</y>
            <z units="Å">0.855</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.0125</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-17536::::</label>
        <annotation_details>Post-processed sharpened cryo-EM map</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>6XD3</access_code>
                    <chain>
                        <source_name>PDB</source_name>
                        <initial_model_type>experimental model</initial_model_type>
                    </chain>
                </initial_model>
                <refinement_protocol>RIGID BODY FIT</refinement_protocol>
                <refinement_space>REAL</refinement_space>
            </modelling>
        </modelling_list>
        <segmentation_list>
            <segmentation>
                <file>emd_17536_msk_1.map</file>
            </segmentation>
        </segmentation_list>
        <half_map_list>
            <half_map format="CCP4" size_kbytes="131073">
                <file>emd_17536_half_map_2.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>320</col>
                    <row>320</row>
                    <sec>320</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>320</x>
                    <y>320</y>
                    <z>320</z>
                </spacing>
                <cell>
                    <a units="Å">273.6</a>
                    <b units="Å">273.6</b>
                    <c units="Å">273.6</c>
                    <alpha units="deg">90.0</alpha>
                    <beta units="deg">90.0</beta>
                    <gamma units="deg">90.0</gamma>
                </cell>
                <axis_order>
                    <fast>X</fast>
                    <medium>Y</medium>
                    <slow>Z</slow>
                </axis_order>
                <statistics>
                    <minimum>-0.02460665</minimum>
                    <maximum>0.050679445</maximum>
                    <average>0.000003870749</average>
                    <std>0.0010419153</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.855</x>
                    <y units="Å">0.855</y>
                    <z units="Å">0.855</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-17536::::</label>
                <annotation_details>Unfiltered half-map</annotation_details>
            </half_map>
            <half_map format="CCP4" size_kbytes="131073">
                <file>emd_17536_half_map_1.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>320</col>
                    <row>320</row>
                    <sec>320</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>320</x>
                    <y>320</y>
                    <z>320</z>
                </spacing>
                <cell>
                    <a units="Å">273.6</a>
                    <b units="Å">273.6</b>
                    <c units="Å">273.6</c>
                    <alpha units="deg">90.0</alpha>
                    <beta units="deg">90.0</beta>
                    <gamma units="deg">90.0</gamma>
                </cell>
                <axis_order>
                    <fast>X</fast>
                    <medium>Y</medium>
                    <slow>Z</slow>
                </axis_order>
                <statistics>
                    <minimum>-0.022194372</minimum>
                    <maximum>0.052564654</maximum>
                    <average>0.000004659008</average>
                    <std>0.0010338719</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.855</x>
                    <y units="Å">0.855</y>
                    <z units="Å">0.855</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-17536::::</label>
                <annotation_details>Unfiltered half-map</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>
