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            <date>2025-07-09</date>
            <code>REL</code>
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        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2024-02-14</deposition>
            <header_release>2024-12-25</header_release>
            <map_release>2024-12-25</map_release>
            <update>2025-07-09</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Not funded</funding_body>
            </grant_reference>
        </grant_support>
        <title>Cryo-EM structure of CAK in complex with SY-5609</title>
        <authors_list>
            <author>Feng J</author>
            <author>Cronin NB</author>
            <author>Marineau JJ</author>
            <author>Greber BJ</author>
        </authors_list>
        <keywords>Kinase, covalent inhibitor, transcription, cell cycle</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0002-8591-2847" order="1">Jones T</author>
                    <author ORCID="0009-0001-5861-2742" order="2">Feng J</author>
                    <author ORCID="0000-0002-3806-9340" order="3">Luyties O</author>
                    <author order="4">Cozzolino K</author>
                    <author order="5">Sanford L</author>
                    <author order="6">Rimel JK</author>
                    <author ORCID="0000-0001-7940-6190" order="7">Ebmeier CC</author>
                    <author order="8">Shelby GS</author>
                    <author ORCID="0000-0002-1364-4345" order="9">Watts LP</author>
                    <author ORCID="0009-0009-6935-4441" order="10">Rodino J</author>
                    <author order="11">Rajagopal N</author>
                    <author order="12">Hu S</author>
                    <author ORCID="0009-0008-7459-686X" order="13">Brennan F</author>
                    <author ORCID="0009-0008-5645-2811" order="14">Maas ZL</author>
                    <author order="15">Alnemy S</author>
                    <author ORCID="0000-0003-4469-6428" order="16">Richter WF</author>
                    <author ORCID="0000-0001-6682-4449" order="17">Koh AF</author>
                    <author ORCID="0000-0002-4249-7313" order="18">Cronin NB</author>
                    <author ORCID="0009-0009-4857-5122" order="19">Madduri A</author>
                    <author order="20">Das J</author>
                    <author order="21">Cooper E</author>
                    <author ORCID="0009-0000-9188-5307" order="22">Hamman KB</author>
                    <author ORCID="0000-0001-9959-597X" order="23">Carulli JP</author>
                    <author ORCID="0000-0001-7490-0165" order="24">Allen MA</author>
                    <author ORCID="0000-0002-5798-3007" order="25">Spencer S</author>
                    <author ORCID="0000-0002-4480-5439" order="26">Kotecha A</author>
                    <author ORCID="0000-0002-4321-0038" order="27">Marineau JJ</author>
                    <author ORCID="0000-0001-9379-7159" order="28">Greber BJ</author>
                    <author ORCID="0000-0001-7665-9985" order="29">Dowell RD</author>
                    <author ORCID="0000-0003-4444-5688" order="30">Taatjes DJ</author>
                    <title>TFIIH kinase CDK7 drives cell proliferation through a common core transcription factor network.</title>
                    <journal_abbreviation>Sci Adv</journal_abbreviation>
                    <country>US</country>
                    <volume>11</volume>
                    <first_page>eadr9660</first_page>
                    <last_page>eadr9660</last_page>
                    <year>2025</year>
                    <external_references type="PUBMED">40020069</external_references>
                    <external_references type="DOI">doi:10.1126/sciadv.adr9660</external_references>
                    <external_references type="ISSN">2375-2548</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-19627</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
        </emdb_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>8s0t</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>
                        <macromolecule_id>3</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>Human CAK bound to the non-covalent inhibitor SY-5609</details>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <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">0.010234531</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>SNAPVTFSTGIKMGQHISLAPIHKLEEALYEYQPLQIETYGPHVPELEMLGRLGYLNHVRAASPQDLAGGYTSSLACHRA
LQDAFSGLFWQPS</string>
                    <external_references type="UNIPROTKB">P51948</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Cyclin-H</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.037721508</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>(ACE)MYHNSSQKRHWTFSSEEQLARLRADANRKFRCKAVANGKVLPNDPVFLEPHEEMTLCKYYEKRLLEFCSVFKPAM
PRSVVGTACMYFKRFYLNNSVMEYHPRIIMLTCAFLACKVDEFNVSSPQFVGNLRESPLGQEKALEQILEYELLLIQQLN
FHLIVHNPYRPFEGFLIDLKTRYPILENPEILRKTADDFLNRIALTDAYLLYTPSQIALTAILSSASRAGITMESYLSES
LMLKENRTCLSQLLDIMKSMRNLVKKYEPPRSEEVAVLKQKLERCHSAELALNVITKKRKGYEDDDYVSKKSKHEEEEWT
DDDLVESL</string>
                    <external_references type="UNIPROTKB">P51946</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>Cyclin-dependent kinase 7</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.039362598</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>SNAMALDVKSRAKRYEKLDFLGEGQFATVYKARDKNTNQIVAIKKIKLGHRSEAKDGINRTALREIKLLQELSHPNIIGL
LDAFGHKSNISLVFDFMETDLEVIIKDNSLVLTPSHIKAYMLMTLQGLEYLHQHWILHRDLKPNNLLLDENGVLKLADFG
LAKSFGSPNRAYTHQVVTRWYRAPELLFGARMYGVGVDMWAVGCILAELLLRVPFLPGDSDLDQLTRIFETLGTPTEEQW
PDMCSLPDYVTFKSFPGIPLHHIFSAAGDDLLDLIQGLFLFNPCARITATQALKMKYFSNRPGPTPGCQLPRPNCPVETL
KEQSNPALAIKRKRTEALEQGGLPKKLIF</string>
                    <external_references type="UNIPROTKB">P50613</external_references>
                </sequence>
                <ec_number>2.7.11.22</ec_number>
            </protein_or_peptide>
            <ligand macromolecule_id="4">
                <name>7-dimethylphosphoryl-3-[2-[[(3~{S})-6,6-dimethylpiperidin-3-yl]amino]-5-(trifluoromethyl)pyrimidin-4-yl]-1~{H}-indole-6-carbonitrile</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000490461</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <formula>YNK</formula>
            </ligand>
            <ligand macromolecule_id="5">
                <name>water</name>
                <molecular_weight>
                    <theoretical units="MDa">1.8015e-05</theoretical>
                </molecular_weight>
                <number_of_copies>145</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">0.3</concentration>
                    <buffer>
                        <ph>7.9</ph>
                        <component>
                            <concentration units="mM">20.0</concentration>
                            <name>HEPES-KOH</name>
                        </component>
                        <component>
                            <concentration units="mM">250.0</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">5.0</concentration>
                            <name>beta-mercaptoethanol</name>
                        </component>
                        <component>
                            <concentration units="% (v/v)">0.7</concentration>
                            <name>glycerol</name>
                        </component>
                        <details>Buffer contained 54 uM inhibitor SY-5609.</details>
                    </buffer>
                    <grid>
                        <model>UltrAuFoil 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>
                        <details>Tergeo EM plasma cleaner</details>
                    </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">1.8</nominal_defocus_max>
                    <calibrated_magnification>96153.0</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>GIF Bioquantum</name>
                            <slit_width units="eV">20</slit_width>
                        </energy_filter>
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                            <film_or_detector_model>GATAN K3 BIOQUANTUM (6k x 4k)</film_or_detector_model>
                            <number_grids_imaged>2</number_grids_imaged>
                            <number_real_images>14170</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>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>4.0 beta</version>
                        </software>
                        <software>
                            <name>cryoSPARC</name>
                            <version>v3.3.1</version>
                        </software>
                    </software_list>
                    <type>PHASE FLIPPING AND AMPLITUDE CORRECTION</type>
                </ctf_correction>
                <startup_model type_of_model="EMDB MAP">
                    <emdb_id>EMD-22123</emdb_id>
                </startup_model>
                <final_reconstruction>
                    <resolution units="Å" res_type="BY AUTHOR">2.3</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>151410</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>
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                    <access_code>8ORM</access_code>
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                        <initial_model_type>experimental model</initial_model_type>
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