7aok

Crystal structure of CI2 mutant L49I

Method: X-RAY DIFFRACTION Dmax: 46.5 Å Quality: GOOD

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

Subtilisin-chymotrypsin inhibitor-2A

Hordeum vulgare

UniProt P01053

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 21–84 Mutation:L49I SO4 SULFATE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8;293 K;40 % (NH4)2SO4, 50 mM Tris-HCl, pH 8.0 Resolution 1.87 Å R-free 0.246

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.

19 other PDB entries and 23 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name ICI2_HORVU
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–64; UniProt 21–84

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 7aok

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id7aok
Deposition date deposition_date2020-10-14
Structure title titleCrystal structure of CI2 mutant L49I
Keywords keywordsProtease inhibitor, PROTEIN BINDING; PROTEIN BINDING
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier13.01
Radius of gyration Rg (electron density) rg_electron11.38
Forward intensity I(0) i01248270.00
Molecular weight molecular_weight7452.0 kDa
Excluded volume excluded_volume9396 ų
Envelope volume envelope_volume10472 ų
Hydration-shell volume shell_volume8185 ų
Envelope diameter envelope_diameter44.5
Shell Rg shell_rg16.65
Envelope Rg envelope_rg11.81
Shape Rg shape_rg11.31
Total Rg total_rg13.00
Total atoms total_atoms520
Residues n_residues64
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 dmax46.5
Rg (real space) rg_real12.95
Rg uncertainty (real space) rg_real_error0.46
I(0) (real space) i0_real1.2480e+06
I(0) uncertainty (real space) i0_real_error1.6060e+04
Rg (reciprocal space) rg_reciprocal12.95
I(0) (reciprocal space) i0_reciprocal1248000.0000
Solution quality estimate total_estimate0.8464
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary15.3
Skewness Skewness skewness0.169
Kurtosis Kurtosis kurtosis-0.293
Angular range angular_range— – 0.5000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha198100.0000
Real-space data points n_real_points80
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.682; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.973; Smooth: 0.980

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 1 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd7aoka_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.40 — CI-2 family of serine protease inhibitors
Superfamily Superfamily superfamilyd.40.1 — CI-2 family of serine protease inhibitors
Family Family familyd.40.1.1 — CI-2 family of serine protease inhibitors

8. Citations (2)

9. Files and Curves (10)