9kvo

Crystal Structure of the Kv7.1 C-terminal Domain in Complex with Calmodulin disease mutation D132E

Method: X-RAY DIFFRACTION Dmax: 78.6 Å Quality: EXCELLENT

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

Calmodulin-1

Homo sapiens

UniProt P0DP23

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 C; UniProt 1–149 Mutation:D132E KCNQ1 helixAB × 1 CA CALCIUM ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;298.15 K;0.1M Tris (pH8.5), 0.2M Sodium acetate trihydrate, 32% PEG4000 Resolution 3.14 Å R-free 0.345
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 1–149 Mutation:D132E KCNQ1 helixAB × 1 CA CALCIUM ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;298.15 K;0.1M Tris (pH8.5), 0.2M Sodium acetate trihydrate, 32% PEG4000 Resolution 3.14 Å R-free 0.345

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.

213 other PDB entries and 278 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CALM1_HUMAN
Isoform
PDB entities 2
Chains and sequence ranges Author chain C; PDBConstruct 1–149; UniProt 1–149 Author chain D; PDBConstruct 1–149; UniProt 1–149

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 9kvo

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9kvo
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9kvo
Deposition date deposition_date2024-12-05
最后修订 last_revision2025-12-10
Structure title titleCrystal Structure of the Kv7.1 C-terminal Domain in Complex with Calmodulin disease mutation D132E
Keywords keywordscalmodulin, METAL BINDING PROTEIN; METAL BINDING PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier25.99
Radius of gyration Rg (electron density) rg_electron25.04
Forward intensity I(0) i028123000.00
Molecular weight molecular_weight37579.0 kDa
Excluded volume excluded_volume45551 ų
Envelope volume envelope_volume62645 ų
Hydration-shell volume shell_volume21854 ų
Envelope diameter envelope_diameter81.2
Shell Rg shell_rg31.07
Envelope Rg envelope_rg24.29
Shape Rg shape_rg25.05
Total Rg total_rg25.75
Total atoms total_atoms2646
Residues n_residues392
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 dmax78.6
Rg (real space) rg_real25.96
Rg uncertainty (real space) rg_real_error0.50
I(0) (real space) i0_real2.8120e+07
I(0) uncertainty (real space) i0_real_error4.0110e+05
Rg (reciprocal space) rg_reciprocal25.97
I(0) (reciprocal space) i0_reciprocal28120000.0000
Solution quality estimate total_estimate0.9095
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary23.2
Skewness Skewness skewness0.188
Kurtosis Kurtosis kurtosis-0.721
Angular range angular_range— – 0.3050 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha7925000.0000
Real-space data points n_real_points62
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.971; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.975; Smooth: 0.931

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

8. Citations (1)

9. Files and Curves (10)