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Open data
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Basic information
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| Title | Cryo-EM structure of CAK-CDK11 | |||||||||
Map data | Post-processed, sharpened map | |||||||||
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Keywords | Complex / cell cycle / kinase / TRANSFERASE | |||||||||
| Function / homology | Function and homology informationRNA polymerase II CTD heptapeptide repeat S5 kinase activity / regulation of mRNA processing / ventricular system development / snRNA transcription by RNA polymerase II / regulation of centrosome cycle / CAK-ERCC2 complex / transcription factor TFIIK complex / adult heart development / transcription factor TFIIH core complex / transcription factor TFIIH holo complex ...RNA polymerase II CTD heptapeptide repeat S5 kinase activity / regulation of mRNA processing / ventricular system development / snRNA transcription by RNA polymerase II / regulation of centrosome cycle / CAK-ERCC2 complex / transcription factor TFIIK complex / adult heart development / transcription factor TFIIH core complex / transcription factor TFIIH holo complex / cyclin-dependent protein serine/threonine kinase activator activity / [RNA-polymerase]-subunit kinase / RNA Polymerase I Transcription Termination / cyclin-dependent protein serine/threonine kinase regulator activity / RNA Pol II CTD phosphorylation and interaction with CE during HIV infection / RNA Pol II CTD phosphorylation and interaction with CE / HIV Transcription Initiation / RNA Polymerase II HIV Promoter Escape / Transcription of the HIV genome / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Initiation And Promoter Clearance / Formation of the Early Elongation Complex / Formation of the HIV-1 Early Elongation Complex / mRNA Capping / regulation of RNA splicing / RNA Polymerase I Transcription Initiation / regulation of G1/S transition of mitotic cell cycle / RNA polymerase II transcribes snRNA genes / cyclin-dependent kinase / ATP-dependent activity, acting on DNA / cyclin-dependent protein serine/threonine kinase activity / Tat-mediated elongation of the HIV-1 transcript / Formation of HIV-1 elongation complex containing HIV-1 Tat / Cyclin E associated events during G1/S transition / Formation of HIV elongation complex in the absence of HIV Tat / Cyclin A:Cdk2-associated events at S phase entry / Cyclin A/B1/B2 associated events during G2/M transition / cyclin-dependent protein kinase holoenzyme complex / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / RNA Polymerase II Pre-transcription Events / positive regulation of smooth muscle cell proliferation / RNA polymerase II CTD heptapeptide repeat kinase activity / Recruitment of mitotic centrosome proteins and complexes / male germ cell nucleus / nucleotide-excision repair / TP53 Regulates Transcription of DNA Repair Genes / transcription initiation at RNA polymerase II promoter / regulation of cell growth / RNA Polymerase I Promoter Escape / G1/S transition of mitotic cell cycle / response to calcium ion / NoRC negatively regulates rRNA expression / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / Formation of Incision Complex in GG-NER / fibrillar center / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / Cyclin D associated events in G1 / kinase activity / mitotic cell cycle / RUNX1 regulates transcription of genes involved in differentiation of HSCs / regulation of apoptotic process / transcription by RNA polymerase II / protein phosphorylation / protein kinase activity / regulation of cell cycle / protein stabilization / cell division / protein serine kinase activity / DNA repair / protein serine/threonine kinase activity / apoptotic process / regulation of DNA-templated transcription / regulation of transcription by RNA polymerase II / negative regulation of apoptotic process / perinuclear region of cytoplasm / positive regulation of transcription by RNA polymerase II / RNA binding / zinc ion binding / nucleoplasm / ATP binding / nucleus / plasma membrane / cytosol / cytoplasm Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.5 Å | |||||||||
Authors | Cushing VI / Greber BJ / McGeoch AJS / Feng J | |||||||||
| Funding support | United Kingdom, 2 items
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Citation | Journal: Science / Year: 2025Title: Structural basis of T-loop-independent recognition and activation of CDKs by the CDK-activating kinase. Authors: Victoria I Cushing / Amy J S McGeoch / Sophie L Williams / Theodoros I Roumeliotis / Junjie Feng / Lucy M Dan / Jyoti S Choudhary / Norman E Davey / Basil J Greber / ![]() Abstract: Cyclin-dependent kinases (CDKs) are prototypical regulators of the cell cycle. The CDK-activating kinase (CAK) acts as a master regulator of CDK activity by catalyzing the activating phosphorylation ...Cyclin-dependent kinases (CDKs) are prototypical regulators of the cell cycle. The CDK-activating kinase (CAK) acts as a master regulator of CDK activity by catalyzing the activating phosphorylation of CDKs on a conserved threonine residue within the regulatory T-loop. However, structural data illuminating the mechanism by which the CAK recognizes and activates CDKs have remained elusive. In this study, we determined high-resolution structures of the CAK in complex with CDK2 and CDK2-cyclin A2 by cryogenic electron microscopy. Our structures reveal a T-loop-independent kinase-kinase interface with contributions from both kinase lobes. Computational analysis and structures of the CAK in complex with CDK1-cyclin B1 and CDK11 indicate that these structures represent the general architecture of CAK-CDK complexes. These results advance our mechanistic understanding of cell cycle regulation and kinase signaling cascades. | |||||||||
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Structure visualization
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_52758.map.gz | 20.8 MB | EMDB map data format | |
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| Header (meta data) | emd-52758-v30.xml emd-52758.xml | 28.8 KB 28.8 KB | Display Display | EMDB header |
| Images | emd_52758.png | 58.7 KB | ||
| Masks | emd_52758_msk_1.map | 22.2 MB | Mask map | |
| Filedesc metadata | emd-52758.cif.gz | 8.1 KB | ||
| Others | emd_52758_half_map_1.map.gz emd_52758_half_map_2.map.gz | 17 MB 17 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-52758 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-52758 | HTTPS FTP |
-Validation report
| Summary document | emd_52758_validation.pdf.gz | 965.2 KB | Display | EMDB validaton report |
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| Full document | emd_52758_full_validation.pdf.gz | 964.8 KB | Display | |
| Data in XML | emd_52758_validation.xml.gz | 10 KB | Display | |
| Data in CIF | emd_52758_validation.cif.gz | 11.7 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-52758 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-52758 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9i9iMC ![]() 9i9jC ![]() 9i9kC ![]() 9qcvC ![]() 9qcxC ![]() 9skqC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_52758.map.gz / Format: CCP4 / Size: 22.2 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | Post-processed, sharpened map | ||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.02 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Mask #1
| File | emd_52758_msk_1.map | ||||||||||||
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| Density Histograms |
-Half map: Unfiltered half-map
| File | emd_52758_half_map_1.map | ||||||||||||
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| Annotation | Unfiltered half-map | ||||||||||||
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| Density Histograms |
-Half map: Unfiltered half-map
| File | emd_52758_half_map_2.map | ||||||||||||
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| Annotation | Unfiltered half-map | ||||||||||||
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Sample components
+Entire : CAK-CDK11 complex
+Supramolecule #1: CAK-CDK11 complex
+Supramolecule #2: CDK-activating kinase (CAK)
+Supramolecule #3: CDK11
+Macromolecule #1: Isoform 7 of Cyclin-dependent kinase 11B
+Macromolecule #2: CDK-activating kinase assembly factor MAT1
+Macromolecule #3: Cyclin-H
+Macromolecule #4: Cyclin-dependent kinase 7
+Macromolecule #5: ADENOSINE-5'-DIPHOSPHATE
+Macromolecule #6: MAGNESIUM ION
+Macromolecule #7: water
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 0.5 mg/mL | ||||||||||||
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| Buffer | pH: 7.9 Component:
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| Grid | Model: UltrAuFoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: GOLD / Support film - topology: HOLEY / Pretreatment - Type: PLASMA CLEANING / Pretreatment - Time: 50 sec. | ||||||||||||
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 278 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Specialist optics | Energy filter - Name: GIF Bioquantum |
| Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 1 / Number real images: 7049 / Average electron dose: 70.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.7000000000000001 µm / Nominal magnification: 165000 |
| Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi




Keywords
Homo sapiens (human)
Authors
United Kingdom, 2 items
Citation


























Z (Sec.)
Y (Row.)
X (Col.)












































Trichoplusia ni (cabbage looper)


Processing
FIELD EMISSION GUN

