9mvw

Crystal structure of S101F calmodulin - CaM:RM20 analog complex

Method: X-RAY DIFFRACTION Dmax: 53.3 Å Quality: GOOD

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 A; UniProt 1–149 Mutation:S101F Myosin light chain kinase, smooth muscle × 1 (Q15746) CA CALCIUM ION × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 4.6;295 K;0.1M Sodium Acetate pH 4.6, 25%(w/v) PEG 4000, 20mM CaCl2 Resolution 1.58 Å R-free 0.237

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 279 assemblies. Open the comparison page and filter oligomeric states

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

Myosin light chain kinase, smooth muscle

OrganismNot specified

UniProt Q15746

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 1691–1710 Non-standard monomer:Yes (specific site not provided by mmCIF) Calmodulin-1 × 1 (P0DP23) CA CALCIUM ION × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 4.6;295 K;0.1M Sodium Acetate pH 4.6, 25%(w/v) PEG 4000, 20mM CaCl2 Resolution 1.58 Å R-free 0.237

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.

7 other PDB entries and 9 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name MYLK_HUMAN
Isoform Q15746-3
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 2–21; UniProt 1691–1710

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 9mvw

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id9mvw
Deposition date deposition_date2025-01-16
最后修订 last_revision2026-01-21
Structure title titleCrystal structure of S101F calmodulin - CaM:RM20 analog complex
Keywords keywordsS101F calmodulin, calcium signal transduction, protein kinase, myosin light chain kinase, TRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier17.06
Radius of gyration Rg (electron density) rg_electron15.82
Forward intensity I(0) i07635250.00
Molecular weight molecular_weight19178.0 kDa
Excluded volume excluded_volume23517 ų
Envelope volume envelope_volume27209 ų
Hydration-shell volume shell_volume14649 ų
Envelope diameter envelope_diameter53.5
Shell Rg shell_rg21.46
Envelope Rg envelope_rg15.98
Shape Rg shape_rg15.82
Total Rg total_rg16.76
Total atoms total_atoms1334
Residues n_residues167
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 dmax53.3
Rg (real space) rg_real16.97
Rg uncertainty (real space) rg_real_error0.31
I(0) (real space) i0_real7.6350e+06
I(0) uncertainty (real space) i0_real_error9.3830e+04
Rg (reciprocal space) rg_reciprocal16.98
I(0) (reciprocal space) i0_reciprocal7635000.0000
Solution quality estimate total_estimate0.8242
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary21.0
Skewness Skewness skewness0.180
Kurtosis Kurtosis kurtosis-0.413
Angular range angular_range— – 0.4650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha1031000.0000
Real-space data points n_real_points77
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.905; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.995; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)