6b3e

Crystal structure of human CDK12/CyclinK in complex with an inhibitor

Method: X-RAY DIFFRACTION Dmax: 113.9 Å Quality: EXCELLENT

1. Protein Identity and Related Structures Protein Identity & Related Structures

Cyclin-dependent kinase 12

Homo sapiens

UniProt Q9NYV4

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 717–1036 Non-standard monomer:Yes (specific site not provided by mmCIF) Cyclin-K × 1 (O75909) MG MAGNESIUM ION × 1 CJM 2-[(2S)-1-(6-{[(4,5-difluoro-1H-benzimidazol-2-yl)methyl]amino}-9-ethyl-9H-purin-2-yl)piperidin-2-yl]ethan-1-ol × 1 EDO 1,2-ETHANEDIOL × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;0.1 M Bis-Tris, pH 6.5, 20.5% PEG 3350, 0.4 M MgCl2 Resolution 3.06 Å R-free 0.212
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 717–1036 Non-standard monomer:Yes (specific site not provided by mmCIF) Cyclin-K × 1 (O75909) MG MAGNESIUM ION × 1 CJM 2-[(2S)-1-(6-{[(4,5-difluoro-1H-benzimidazol-2-yl)methyl]amino}-9-ethyl-9H-purin-2-yl)piperidin-2-yl]ethan-1-ol × 1 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;0.1 M Bis-Tris, pH 6.5, 20.5% PEG 3350, 0.4 M MgCl2 Resolution 3.06 Å R-free 0.212

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

38 other PDB entries and 103 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CDK12_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–320; UniProt 717–1036 Author chain C; PDBConstruct 1–320; UniProt 717–1036

Cyclin-K

Homo sapiens

UniProt O75909

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 1–267 Not recorded Cyclin-dependent kinase 12 × 1 (Q9NYV4) MG MAGNESIUM ION × 1 CJM 2-[(2S)-1-(6-{[(4,5-difluoro-1H-benzimidazol-2-yl)methyl]amino}-9-ethyl-9H-purin-2-yl)piperidin-2-yl]ethan-1-ol × 1 EDO 1,2-ETHANEDIOL × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;0.1 M Bis-Tris, pH 6.5, 20.5% PEG 3350, 0.4 M MgCl2 Resolution 3.06 Å R-free 0.212
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 1–267 Not recorded Cyclin-dependent kinase 12 × 1 (Q9NYV4) MG MAGNESIUM ION × 1 CJM 2-[(2S)-1-(6-{[(4,5-difluoro-1H-benzimidazol-2-yl)methyl]amino}-9-ethyl-9H-purin-2-yl)piperidin-2-yl]ethan-1-ol × 1 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;0.1 M Bis-Tris, pH 6.5, 20.5% PEG 3350, 0.4 M MgCl2 Resolution 3.06 Å R-free 0.212

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

40 other PDB entries and 106 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CCNK_HUMAN
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–267; UniProt 1–267 Author chain D; PDBConstruct 1–267; UniProt 1–267

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 6b3e

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6b3e
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6b3e
Deposition date deposition_date2017-09-21
Structure title titleCrystal structure of human CDK12/CyclinK in complex with an inhibitor
Keywords keywordsInhibitor, complex, kinase, TRANSFERASE, TRANSFERASE-INHIBITOR complex; TRANSFERASE/INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier36.16
Radius of gyration Rg (electron density) rg_electron35.30
Forward intensity I(0) i0238082000.00
Molecular weight molecular_weight129380.0 kDa
Excluded volume excluded_volume163920 ų
Envelope volume envelope_volume209450 ų
Hydration-shell volume shell_volume48441 ų
Envelope diameter envelope_diameter113.3
Shell Rg shell_rg42.72
Envelope Rg envelope_rg34.51
Shape Rg shape_rg35.32
Total Rg total_rg35.76
Total atoms total_atoms9110
Residues n_residues1097
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax113.9
Rg (real space) rg_real36.01
Rg uncertainty (real space) rg_real_error0.74
I(0) (real space) i0_real2.3810e+08
I(0) uncertainty (real space) i0_real_error3.8250e+06
Rg (reciprocal space) rg_reciprocal36.11
I(0) (reciprocal space) i0_reciprocal238100000.0000
Solution quality estimate total_estimate0.9080
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary46.6
Skewness Skewness skewness0.116
Kurtosis Kurtosis kurtosis-0.641
Angular range angular_range— – 0.2200 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha50530000.0000
Real-space data points n_real_points45
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.948; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.956

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 14 domains

SCOP 2.08 (6 domains)

Domain ID domain_idd6b3ea_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.144 — Protein kinase-like (PK-like)
Superfamily Superfamily superfamilyd.144.1 — Protein kinase-like (PK-like)
Family Family familyd.144.1.0 — automated matches
Domain ID domain_idd6b3eb1
Class classa — All alpha proteins
Fold Fold folda.74 — Cyclin-like
Superfamily Superfamily superfamilya.74.1 — Cyclin-like
Family Family familya.74.1.1 — Cyclin
Domain ID domain_idd6b3eb2
Class classa — All alpha proteins
Fold Fold folda.74 — Cyclin-like
Superfamily Superfamily superfamilya.74.1 — Cyclin-like
Family Family familya.74.1.1 — Cyclin
Domain ID domain_idd6b3ec_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.144 — Protein kinase-like (PK-like)
Superfamily Superfamily superfamilyd.144.1 — Protein kinase-like (PK-like)
Family Family familyd.144.1.0 — automated matches
Domain ID domain_idd6b3ed1
Class classa — All alpha proteins
Fold Fold folda.74 — Cyclin-like
Superfamily Superfamily superfamilya.74.1 — Cyclin-like
Family Family familya.74.1.1 — Cyclin
Domain ID domain_idd6b3ed2
Class classa — All alpha proteins
Fold Fold folda.74 — Cyclin-like
Superfamily Superfamily superfamilya.74.1 — Cyclin-like
Family Family familya.74.1.1 — Cyclin

CATH v4.4 (8 domains)

Domain ID domain_id6b3eA01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily20 — Phosphorylase Kinase; domain 1
Domain ID domain_id6b3eA02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology510 — Transferase(Phosphotransferase); domain 1
Homologous superfamily homologous superfamily10 — Transferase(Phosphotransferase) domain 1
Domain ID domain_id6b3eB01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology472 — Cyclin A; domain 1
Homologous superfamily homologous superfamily10 — Cyclin-like
Domain ID domain_id6b3eB02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology472 — Cyclin A; domain 1
Homologous superfamily homologous superfamily10 — Cyclin-like
Domain ID domain_id6b3eC01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily20 — Phosphorylase Kinase; domain 1
Domain ID domain_id6b3eC02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology510 — Transferase(Phosphotransferase); domain 1
Homologous superfamily homologous superfamily10 — Transferase(Phosphotransferase) domain 1
Domain ID domain_id6b3eD01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology472 — Cyclin A; domain 1
Homologous superfamily homologous superfamily10 — Cyclin-like
Domain ID domain_id6b3eD02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology472 — Cyclin A; domain 1
Homologous superfamily homologous superfamily10 — Cyclin-like

8. Citations (1)

9. Files and Curves (10)