1iq1

CRYSTAL STRUCTURE OF THE IMPORTIN-ALPHA(44-54)-IMPORTIN-ALPHA(70-529) COMPLEX

Method: X-RAY DIFFRACTION Dmax: 98.2 Å Quality: GOOD

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

IMPORTIN ALPHA-2 SUBUNIT

OrganismNot specified

UniProt P52293

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 homooligomer Homooligomer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain A; UniProt 44–54 Chain B; UniProt 44–54 Chain C; UniProt 70–529 Fragment:AUTOINHIBITORY PEPTIDE(RESIDUES 44-54) Fragment:ARMADILLO REPEAT DOMAIN(RESIDUES 70-529) No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;291 K;sodium phosphate, DTT, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K Resolution 2.80 Å R-free 0.248

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.

150 other PDB entries and 151 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IMA2_MOUSE
Isoform
PDB entities 1, 2
Chains and sequence ranges Author chain A; PDBConstruct 1–11; UniProt 44–54 Author chain B; PDBConstruct 1–11; UniProt 44–54 Author chain C; PDBConstruct 1–460; UniProt 70–529

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 1iq1

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1iq1
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1iq1
Deposition date deposition_date2001-05-28
Structure title titleCRYSTAL STRUCTURE OF THE IMPORTIN-ALPHA(44-54)-IMPORTIN-ALPHA(70-529) COMPLEX
Keywords keywordsarmadillo repeat, solenoid, autoinhibition, PROTEIN TRANSPORT; PROTEIN TRANSPORT
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier28.05
Radius of gyration Rg (electron density) rg_electron27.85
Forward intensity I(0) i035697000.00
Molecular weight molecular_weight47986.0 kDa
Excluded volume excluded_volume60729 ų
Envelope volume envelope_volume71819 ų
Hydration-shell volume shell_volume23190 ų
Envelope diameter envelope_diameter101.5
Shell Rg shell_rg32.76
Envelope Rg envelope_rg27.91
Shape Rg shape_rg27.86
Total Rg total_rg28.32
Total atoms total_atoms3377
Residues n_residues442
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 dmax98.2
Rg (real space) rg_real28.42
Rg uncertainty (real space) rg_real_error0.89
I(0) (real space) i0_real3.5700e+07
I(0) uncertainty (real space) i0_real_error5.2890e+05
Rg (reciprocal space) rg_reciprocal28.31
I(0) (reciprocal space) i0_reciprocal35690000.0000
Solution quality estimate total_estimate0.7937
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary24.1
Skewness Skewness skewness0.549
Kurtosis Kurtosis kurtosis-0.373
Angular range angular_range— – 0.2850 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha14860000.0000
Real-space data points n_real_points58
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.634; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.549; Smooth: 0.863

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1iq1c_
Class classa — All alpha proteins
Fold Fold folda.118 — alpha-alpha superhelix
Superfamily Superfamily superfamilya.118.1 — ARM repeat
Family Family familya.118.1.1 — Armadillo repeat

CATH v4.4 (1 domains)

Domain ID domain_id1iq1C00
Class class1 — Mainly Alpha
Architecture architecture25 — Alpha Horseshoe
Topology topology10 — Leucine-rich Repeat Variant
Homologous superfamily homologous superfamily10 — Leucine-rich Repeat Variant

8. Citations (1)

9. Files and Curves (10)