1f70

REFINED SOLUTION STRUCTURE OF CALMODULIN N-TERMINAL DOMAIN

Method: SOLUTION NMR Dmax: 39.6 Å Quality: GOOD

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

CALMODULIN

Xenopus laevis

UniProt P62155

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 monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 2–76 Fragment:N-TERMINAL DOMAIN No other associated polymer SOLUTION NMR NMR measurement conditions:pH 7;298 K;Ionic strength (raw mmCIF value) 100 mM KCL;Pressure ambient NMR sample composition:1 mM Calmodulin U-15N,13C; 5 mM Hepe buffer, 100 mM KCL | 90% H2O/10% D2O NMR sample composition:1 mM Calmodulin U-15N,13C; 5 mM Hepe buffer, 100 mM KCL; 21 mg/ml filamentous phage Pf1 | 90% H2O/10% D2O Resolution not provided

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.

22 other PDB entries and 27 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CALM_XENLA
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 2–76; UniProt 2–76

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 1f70

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1f70
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1f70
Deposition date deposition_date2000-06-24
Structure title titleREFINED SOLUTION STRUCTURE OF CALMODULIN N-TERMINAL DOMAIN
Keywords keywordsCalcium binding, EF hands, four-helix bundle, TRANSPORT PROTEIN; TRANSPORT PROTEIN
Experimental Method methodSOLUTION NMR

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

Radius of gyration Rg (Guinier) rg_guinier12.68
Radius of gyration Rg (electron density) rg_electron12.04
Forward intensity I(0) i0111826000.00
Molecular weight molecular_weight84203.0 kDa
Excluded volume excluded_volume103560 ų
Envelope volume envelope_volume15190 ų
Hydration-shell volume shell_volume10315 ų
Envelope diameter envelope_diameter41.9
Shell Rg shell_rg18.24
Envelope Rg envelope_rg13.11
Shape Rg shape_rg12.06
Total Rg total_rg12.23
Total atoms total_atoms11500
Residues n_residues760
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 dmax39.6
Rg (real space) rg_real12.60
Rg uncertainty (real space) rg_real_error0.30
I(0) (real space) i0_real1.1180e+08
I(0) uncertainty (real space) i0_real_error1.2130e+06
Rg (reciprocal space) rg_reciprocal12.60
I(0) (reciprocal space) i0_reciprocal111800000.0000
Solution quality estimate total_estimate0.8798
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary15.1
Skewness Skewness skewness0.027
Kurtosis Kurtosis kurtosis-0.404
Angular range angular_range— – 0.5000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha87240.0000
Real-space data points n_real_points80
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.824; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.985; Smooth: 0.977

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (1)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1f70a_
Class classa — All alpha proteins
Fold Fold folda.39 — EF Hand-like
Superfamily Superfamily superfamilya.39.1 — EF-hand
Family Family familya.39.1.5 — Calmodulin-like

CATH v4.4 (1 domains)

Domain ID domain_id1f70A00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology238 — Recoverin; domain 1
Homologous superfamily homologous superfamily10 — EF-hand

8. Citations (1)

9. Files and Curves (10)