3e8c

Crystal structures of the kinase domain of PKA in complex with ATP-competitive inhibitors

Method: X-RAY DIFFRACTION Dmax: 146.2 Å Quality: GOOD

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

cAMP-dependent protein kinase catalytic subunit alpha

Bos taurus

UniProt P00517

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 2–351 Non-standard monomer:Yes (specific site not provided by mmCIF) cAMP-dependent protein kinase inhibitor peptide × 1 (Q3SX13) G96 4-[2-(4-amino-1,2,5-oxadiazol-3-yl)-6-{[(2R)-2-amino-3-phenylpropyl]oxy}-1-ethyl-1H-imidazo[4,5-c]pyridin-4-yl]-2-methylbut-3-yn-2-ol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;273 K;13-17% PEG 3K-20K, 100 mM MES pH 6.5 or acetate 4.6, 1-15% methanol. Seeded, pH 4.5 - 6.5, vapor diffusion, temperature 273K Resolution 2.20 Å R-free 0.290
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 2–351 Non-standard monomer:Yes (specific site not provided by mmCIF) cAMP-dependent protein kinase inhibitor peptide × 1 (Q3SX13) G96 4-[2-(4-amino-1,2,5-oxadiazol-3-yl)-6-{[(2R)-2-amino-3-phenylpropyl]oxy}-1-ethyl-1H-imidazo[4,5-c]pyridin-4-yl]-2-methylbut-3-yn-2-ol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;273 K;13-17% PEG 3K-20K, 100 mM MES pH 6.5 or acetate 4.6, 1-15% methanol. Seeded, pH 4.5 - 6.5, vapor diffusion, temperature 273K Resolution 2.20 Å R-free 0.290
3 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 2–351 Non-standard monomer:Yes (specific site not provided by mmCIF) cAMP-dependent protein kinase inhibitor peptide × 1 (Q3SX13) G96 4-[2-(4-amino-1,2,5-oxadiazol-3-yl)-6-{[(2R)-2-amino-3-phenylpropyl]oxy}-1-ethyl-1H-imidazo[4,5-c]pyridin-4-yl]-2-methylbut-3-yn-2-ol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;273 K;13-17% PEG 3K-20K, 100 mM MES pH 6.5 or acetate 4.6, 1-15% methanol. Seeded, pH 4.5 - 6.5, vapor diffusion, temperature 273K Resolution 2.20 Å R-free 0.290
4 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 2–351 Non-standard monomer:Yes (specific site not provided by mmCIF) cAMP-dependent protein kinase inhibitor peptide × 1 (Q3SX13) G96 4-[2-(4-amino-1,2,5-oxadiazol-3-yl)-6-{[(2R)-2-amino-3-phenylpropyl]oxy}-1-ethyl-1H-imidazo[4,5-c]pyridin-4-yl]-2-methylbut-3-yn-2-ol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;273 K;13-17% PEG 3K-20K, 100 mM MES pH 6.5 or acetate 4.6, 1-15% methanol. Seeded, pH 4.5 - 6.5, vapor diffusion, temperature 273K Resolution 2.20 Å R-free 0.290
5 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain E; UniProt 2–351 Non-standard monomer:Yes (specific site not provided by mmCIF) cAMP-dependent protein kinase inhibitor peptide × 1 (Q3SX13) G96 4-[2-(4-amino-1,2,5-oxadiazol-3-yl)-6-{[(2R)-2-amino-3-phenylpropyl]oxy}-1-ethyl-1H-imidazo[4,5-c]pyridin-4-yl]-2-methylbut-3-yn-2-ol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;273 K;13-17% PEG 3K-20K, 100 mM MES pH 6.5 or acetate 4.6, 1-15% methanol. Seeded, pH 4.5 - 6.5, vapor diffusion, temperature 273K Resolution 2.20 Å R-free 0.290
6 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain F; UniProt 2–351 Non-standard monomer:Yes (specific site not provided by mmCIF) cAMP-dependent protein kinase inhibitor peptide × 1 (Q3SX13) G96 4-[2-(4-amino-1,2,5-oxadiazol-3-yl)-6-{[(2R)-2-amino-3-phenylpropyl]oxy}-1-ethyl-1H-imidazo[4,5-c]pyridin-4-yl]-2-methylbut-3-yn-2-ol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;273 K;13-17% PEG 3K-20K, 100 mM MES pH 6.5 or acetate 4.6, 1-15% methanol. Seeded, pH 4.5 - 6.5, vapor diffusion, temperature 273K Resolution 2.20 Å R-free 0.290

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.

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

View Construct and Data Evidence
UniProt name KAPCA_BOVIN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–350; UniProt 2–351 Author chain B; PDBConstruct 1–350; UniProt 2–351 Author chain C; PDBConstruct 1–350; UniProt 2–351 Author chain D; PDBConstruct 1–350; UniProt 2–351 Author chain E; PDBConstruct 1–350; UniProt 2–351 Author chain F; PDBConstruct 1–350; UniProt 2–351

cAMP-dependent protein kinase inhibitor peptide

OrganismNot specified

UniProt Q3SX13

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 G; UniProt 6–25 Not recorded cAMP-dependent protein kinase catalytic subunit alpha × 1 (P00517) G96 4-[2-(4-amino-1,2,5-oxadiazol-3-yl)-6-{[(2R)-2-amino-3-phenylpropyl]oxy}-1-ethyl-1H-imidazo[4,5-c]pyridin-4-yl]-2-methylbut-3-yn-2-ol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;273 K;13-17% PEG 3K-20K, 100 mM MES pH 6.5 or acetate 4.6, 1-15% methanol. Seeded, pH 4.5 - 6.5, vapor diffusion, temperature 273K Resolution 2.20 Å R-free 0.290
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain H; UniProt 6–25 Not recorded cAMP-dependent protein kinase catalytic subunit alpha × 1 (P00517) G96 4-[2-(4-amino-1,2,5-oxadiazol-3-yl)-6-{[(2R)-2-amino-3-phenylpropyl]oxy}-1-ethyl-1H-imidazo[4,5-c]pyridin-4-yl]-2-methylbut-3-yn-2-ol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;273 K;13-17% PEG 3K-20K, 100 mM MES pH 6.5 or acetate 4.6, 1-15% methanol. Seeded, pH 4.5 - 6.5, vapor diffusion, temperature 273K Resolution 2.20 Å R-free 0.290
3 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain I; UniProt 6–25 Not recorded cAMP-dependent protein kinase catalytic subunit alpha × 1 (P00517) G96 4-[2-(4-amino-1,2,5-oxadiazol-3-yl)-6-{[(2R)-2-amino-3-phenylpropyl]oxy}-1-ethyl-1H-imidazo[4,5-c]pyridin-4-yl]-2-methylbut-3-yn-2-ol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;273 K;13-17% PEG 3K-20K, 100 mM MES pH 6.5 or acetate 4.6, 1-15% methanol. Seeded, pH 4.5 - 6.5, vapor diffusion, temperature 273K Resolution 2.20 Å R-free 0.290
4 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain J; UniProt 6–25 Not recorded cAMP-dependent protein kinase catalytic subunit alpha × 1 (P00517) G96 4-[2-(4-amino-1,2,5-oxadiazol-3-yl)-6-{[(2R)-2-amino-3-phenylpropyl]oxy}-1-ethyl-1H-imidazo[4,5-c]pyridin-4-yl]-2-methylbut-3-yn-2-ol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;273 K;13-17% PEG 3K-20K, 100 mM MES pH 6.5 or acetate 4.6, 1-15% methanol. Seeded, pH 4.5 - 6.5, vapor diffusion, temperature 273K Resolution 2.20 Å R-free 0.290
5 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain K; UniProt 6–25 Not recorded cAMP-dependent protein kinase catalytic subunit alpha × 1 (P00517) G96 4-[2-(4-amino-1,2,5-oxadiazol-3-yl)-6-{[(2R)-2-amino-3-phenylpropyl]oxy}-1-ethyl-1H-imidazo[4,5-c]pyridin-4-yl]-2-methylbut-3-yn-2-ol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;273 K;13-17% PEG 3K-20K, 100 mM MES pH 6.5 or acetate 4.6, 1-15% methanol. Seeded, pH 4.5 - 6.5, vapor diffusion, temperature 273K Resolution 2.20 Å R-free 0.290
6 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain L; UniProt 6–25 Not recorded cAMP-dependent protein kinase catalytic subunit alpha × 1 (P00517) G96 4-[2-(4-amino-1,2,5-oxadiazol-3-yl)-6-{[(2R)-2-amino-3-phenylpropyl]oxy}-1-ethyl-1H-imidazo[4,5-c]pyridin-4-yl]-2-methylbut-3-yn-2-ol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;273 K;13-17% PEG 3K-20K, 100 mM MES pH 6.5 or acetate 4.6, 1-15% methanol. Seeded, pH 4.5 - 6.5, vapor diffusion, temperature 273K Resolution 2.20 Å R-free 0.290

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.

18 other PDB entries and 23 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IPKA_BOVIN
Isoform
PDB entities 2
Chains and sequence ranges Author chain G; PDBConstruct 1–20; UniProt 6–25 Author chain H; PDBConstruct 1–20; UniProt 6–25 Author chain I; PDBConstruct 1–20; UniProt 6–25 Author chain J; PDBConstruct 1–20; UniProt 6–25 Author chain K; PDBConstruct 1–20; UniProt 6–25 Author chain L; PDBConstruct 1–20; UniProt 6–25

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 3e8c

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3e8c
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3e8c
Deposition date deposition_date2008-08-19
Structure title titleCrystal structures of the kinase domain of PKA in complex with ATP-competitive inhibitors
Keywords keywords;PKA, AKT2, kinase, PKI, bovine, inhibitor, ATP-binding, cAMP, Lipoprotein, Myristate, Nucleotide-binding, Nucleus, Phosphoprotein, Serine/threonine-protein kinase, Transferase, Protein kinase inhibitor ;; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier46.44
Radius of gyration Rg (electron density) rg_electron45.80
Forward intensity I(0) i0906517000.00
Molecular weight molecular_weight256600.0 kDa
Excluded volume excluded_volume323820 ų
Envelope volume envelope_volume448060 ų
Hydration-shell volume shell_volume80524 ų
Envelope diameter envelope_diameter148.3
Shell Rg shell_rg51.92
Envelope Rg envelope_rg44.15
Shape Rg shape_rg45.78
Total Rg total_rg46.10
Total atoms total_atoms18124
Residues n_residues2162
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 dmax146.2
Rg (real space) rg_real46.14
Rg uncertainty (real space) rg_real_error0.98
I(0) (real space) i0_real9.0650e+08
I(0) uncertainty (real space) i0_real_error1.6580e+07
Rg (reciprocal space) rg_reciprocal46.44
I(0) (reciprocal space) i0_reciprocal906800000.0000
Solution quality estimate total_estimate0.8876
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary64.5
Skewness Skewness skewness0.055
Kurtosis Kurtosis kurtosis-0.517
Angular range angular_range— – 0.1700 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha139200000.0000
Real-space data points n_real_points35
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.885; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.977; Smooth: 0.903

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 18 domains

SCOP 2.08 (6 domains)

Domain ID domain_idd3e8ca_
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.144.1.7 — Protein kinases, catalytic subunit
Domain ID domain_idd3e8cb_
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.144.1.7 — Protein kinases, catalytic subunit
Domain ID domain_idd3e8cc_
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.144.1.7 — Protein kinases, catalytic subunit
Domain ID domain_idd3e8cd_
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.144.1.7 — Protein kinases, catalytic subunit
Domain ID domain_idd3e8ce_
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.144.1.7 — Protein kinases, catalytic subunit
Domain ID domain_idd3e8cf_
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.144.1.7 — Protein kinases, catalytic subunit

CATH v4.4 (12 domains)

Domain ID domain_id3e8cA01
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_id3e8cA02
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_id3e8cB01
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_id3e8cB02
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_id3e8cC01
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_id3e8cC02
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_id3e8cD01
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_id3e8cD02
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_id3e8cE01
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_id3e8cE02
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_id3e8cF01
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_id3e8cF02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily20 — Phosphorylase Kinase; domain 1

8. Citations (2)

9. Files and Curves (10)