7axt

Crystal structure of the cAMP-dependent protein kinase A cocrystallized with isoquinoline-5-carboxylic acid and PKI (5-24)

Method: X-RAY DIFFRACTION Dmax: 71.6 Å Quality: GOOD

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

cAMP-dependent protein kinase catalytic subunit alpha

Cricetulus griseus

UniProt P25321

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 1–351 Non-standard monomer:Yes (specific site not provided by mmCIF) cAMP-dependent protein kinase inhibitor alpha × 1 (P63248) S9B isoquinoline-5-carboxylic acid × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;277 K;30mM MBT, 1mM DTT, 0.1mM EDTA, 75mM LiCl, 0.3mM Mega8, 0.07mM PKI, 10mM of isoquinoline-5-carboxylic acid (solved in DMSO, 100mM) and 20% (v/v) MeOH Resolution 1.86 Å R-free 0.226

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.

158 other PDB entries and 158 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name KAPCA_CRIGR
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 3–353; UniProt 1–351

cAMP-dependent protein kinase inhibitor alpha

OrganismNot specified

UniProt P63248

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 6–25 Not recorded cAMP-dependent protein kinase catalytic subunit alpha × 1 (P25321) S9B isoquinoline-5-carboxylic acid × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;277 K;30mM MBT, 1mM DTT, 0.1mM EDTA, 75mM LiCl, 0.3mM Mega8, 0.07mM PKI, 10mM of isoquinoline-5-carboxylic acid (solved in DMSO, 100mM) and 20% (v/v) MeOH Resolution 1.86 Å R-free 0.226

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.

46 other PDB entries and 46 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IPKA_MOUSE
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; 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 7axt

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7axt
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7axt
Deposition date deposition_date2020-11-10
Structure title titleCrystal structure of the cAMP-dependent protein kinase A cocrystallized with isoquinoline-5-carboxylic acid and PKI (5-24)
Keywords keywordsphosphotransferase, signalling pathways, glycogen metabolism, serine/threonine kinase, TRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier21.86
Radius of gyration Rg (electron density) rg_electron20.39
Forward intensity I(0) i026199300.00
Molecular weight molecular_weight40152.0 kDa
Excluded volume excluded_volume50583 ų
Envelope volume envelope_volume59600 ų
Hydration-shell volume shell_volume23876 ų
Envelope diameter envelope_diameter74.2
Shell Rg shell_rg27.54
Envelope Rg envelope_rg20.77
Shape Rg shape_rg20.36
Total Rg total_rg21.41
Total atoms total_atoms5427
Residues n_residues360
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 dmax71.6
Rg (real space) rg_real21.73
Rg uncertainty (real space) rg_real_error0.34
I(0) (real space) i0_real2.6200e+07
I(0) uncertainty (real space) i0_real_error3.2300e+05
Rg (reciprocal space) rg_reciprocal21.75
I(0) (reciprocal space) i0_reciprocal26200000.0000
Solution quality estimate total_estimate0.8856
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary27.8
Skewness Skewness skewness0.200
Kurtosis Kurtosis kurtosis-0.348
Angular range angular_range— – 0.3650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha7165000.0000
Real-space data points n_real_points68
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.837; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.998

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id7axtA01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology510 — Transferase(Phosphotransferase); domain 1
Homologous superfamily homologous superfamily10 — Transferase(Phosphotransferase) domain 1

8. Citations (1)

9. Files and Curves (10)