4aoq

Cationic trypsin in complex with mutated Spinacia oleracea trypsin inhibitor III (SOTI-III) (F14A)

Method: X-RAY DIFFRACTION Dmax: 98.1 Å Quality: GOOD

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

CATIONIC TRYPSIN

OrganismNot specified

UniProt P00760

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 24–246 Not recorded TRYPSIN INHIBITOR 3 × 1 (P84781) CA CALCIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;292 K;TRYPSIN (SIGMA T1426) WAS DISOLVED IN 1 MM HCL (PH 2.0), 10 MM CACL2, PURIFIED ON A SUPERDEX 75 16/60 COLUMN (BUFFER: 25 MM MES PH 5.5, 50 MM NACL AND 10 MM CACL2). CRYSTALS GREW FROM EQUAL VOLUMES OF TRYPSIN (11.5 MG/ML) INCUBATED WITH LYOPHILIZED SOTI-III F14A (1.5MM) AND PRECIPITANT SOLUTION (0.1M BICINE PH 9, 20% (W/V) PEG 6000) IN HANGING DROP CRYSTALLIZATION PLATES AT 19C. Resolution 2.00 Å R-free 0.220
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 24–246 Not recorded TRYPSIN INHIBITOR 3 × 1 (P84781) CA CALCIUM ION × 1 1PE PENTAETHYLENE GLYCOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;292 K;TRYPSIN (SIGMA T1426) WAS DISOLVED IN 1 MM HCL (PH 2.0), 10 MM CACL2, PURIFIED ON A SUPERDEX 75 16/60 COLUMN (BUFFER: 25 MM MES PH 5.5, 50 MM NACL AND 10 MM CACL2). CRYSTALS GREW FROM EQUAL VOLUMES OF TRYPSIN (11.5 MG/ML) INCUBATED WITH LYOPHILIZED SOTI-III F14A (1.5MM) AND PRECIPITANT SOLUTION (0.1M BICINE PH 9, 20% (W/V) PEG 6000) IN HANGING DROP CRYSTALLIZATION PLATES AT 19C. Resolution 2.00 Å R-free 0.220
3 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 24–246 Not recorded TRYPSIN INHIBITOR 3 × 1 (P84781) CA CALCIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;292 K;TRYPSIN (SIGMA T1426) WAS DISOLVED IN 1 MM HCL (PH 2.0), 10 MM CACL2, PURIFIED ON A SUPERDEX 75 16/60 COLUMN (BUFFER: 25 MM MES PH 5.5, 50 MM NACL AND 10 MM CACL2). CRYSTALS GREW FROM EQUAL VOLUMES OF TRYPSIN (11.5 MG/ML) INCUBATED WITH LYOPHILIZED SOTI-III F14A (1.5MM) AND PRECIPITANT SOLUTION (0.1M BICINE PH 9, 20% (W/V) PEG 6000) IN HANGING DROP CRYSTALLIZATION PLATES AT 19C. Resolution 2.00 Å R-free 0.220

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.

608 other PDB entries and 768 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name TRY1_BOVIN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–223; UniProt 24–246 Author chain B; PDBConstruct 1–223; UniProt 24–246 Author chain C; PDBConstruct 1–223; UniProt 24–246

TRYPSIN INHIBITOR 3

OrganismNot specified

UniProt P84781

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 D; UniProt 1–37 Mutation:YES CATIONIC TRYPSIN × 1 (P00760) CA CALCIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;292 K;TRYPSIN (SIGMA T1426) WAS DISOLVED IN 1 MM HCL (PH 2.0), 10 MM CACL2, PURIFIED ON A SUPERDEX 75 16/60 COLUMN (BUFFER: 25 MM MES PH 5.5, 50 MM NACL AND 10 MM CACL2). CRYSTALS GREW FROM EQUAL VOLUMES OF TRYPSIN (11.5 MG/ML) INCUBATED WITH LYOPHILIZED SOTI-III F14A (1.5MM) AND PRECIPITANT SOLUTION (0.1M BICINE PH 9, 20% (W/V) PEG 6000) IN HANGING DROP CRYSTALLIZATION PLATES AT 19C. Resolution 2.00 Å R-free 0.220
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain E; UniProt 1–37 Mutation:YES CATIONIC TRYPSIN × 1 (P00760) CA CALCIUM ION × 1 1PE PENTAETHYLENE GLYCOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;292 K;TRYPSIN (SIGMA T1426) WAS DISOLVED IN 1 MM HCL (PH 2.0), 10 MM CACL2, PURIFIED ON A SUPERDEX 75 16/60 COLUMN (BUFFER: 25 MM MES PH 5.5, 50 MM NACL AND 10 MM CACL2). CRYSTALS GREW FROM EQUAL VOLUMES OF TRYPSIN (11.5 MG/ML) INCUBATED WITH LYOPHILIZED SOTI-III F14A (1.5MM) AND PRECIPITANT SOLUTION (0.1M BICINE PH 9, 20% (W/V) PEG 6000) IN HANGING DROP CRYSTALLIZATION PLATES AT 19C. Resolution 2.00 Å R-free 0.220
3 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain F; UniProt 1–37 Mutation:YES CATIONIC TRYPSIN × 1 (P00760) CA CALCIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;292 K;TRYPSIN (SIGMA T1426) WAS DISOLVED IN 1 MM HCL (PH 2.0), 10 MM CACL2, PURIFIED ON A SUPERDEX 75 16/60 COLUMN (BUFFER: 25 MM MES PH 5.5, 50 MM NACL AND 10 MM CACL2). CRYSTALS GREW FROM EQUAL VOLUMES OF TRYPSIN (11.5 MG/ML) INCUBATED WITH LYOPHILIZED SOTI-III F14A (1.5MM) AND PRECIPITANT SOLUTION (0.1M BICINE PH 9, 20% (W/V) PEG 6000) IN HANGING DROP CRYSTALLIZATION PLATES AT 19C. Resolution 2.00 Å R-free 0.220

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.

1 other PDB entries and 3 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name ITR3_SPIOL
Isoform
PDB entities 2
Chains and sequence ranges Author chain D; PDBConstruct 1–37; UniProt 1–37 Author chain E; PDBConstruct 1–37; UniProt 1–37 Author chain F; PDBConstruct 1–37; UniProt 1–37

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 4aoq

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4aoq
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4aoq
Deposition date deposition_date2012-03-29
Structure title titleCationic trypsin in complex with mutated Spinacia oleracea trypsin inhibitor III (SOTI-III) (F14A)
Keywords keywordsHYDROLASE-INHIBITOR COMPLEX, MINIPROTEIN SCAFFOLD, KNOTTINS, SERINE PROTEASE INHIBITOR; HYDROLASE/INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier30.19
Radius of gyration Rg (electron density) rg_electron29.74
Forward intensity I(0) i0112146000.00
Molecular weight molecular_weight80718.0 kDa
Excluded volume excluded_volume99714 ų
Envelope volume envelope_volume120310 ų
Hydration-shell volume shell_volume34111 ų
Envelope diameter envelope_diameter100.1
Shell Rg shell_rg36.43
Envelope Rg envelope_rg29.52
Shape Rg shape_rg29.73
Total Rg total_rg30.34
Total atoms total_atoms5620
Residues n_residues773
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 dmax98.1
Rg (real space) rg_real30.17
Rg uncertainty (real space) rg_real_error0.77
I(0) (real space) i0_real1.1210e+08
I(0) uncertainty (real space) i0_real_error1.7980e+06
Rg (reciprocal space) rg_reciprocal30.19
I(0) (reciprocal space) i0_reciprocal112100000.0000
Solution quality estimate total_estimate0.8945
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary30.2
Skewness Skewness skewness0.261
Kurtosis Kurtosis kurtosis-0.570
Angular range angular_range— – 0.2600 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha22860000.0000
Real-space data points n_real_points53
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.911; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.973; Smooth: 0.918

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 6 domains

CATH v4.4 (6 domains)

Domain ID domain_id4aoqA01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id4aoqA02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id4aoqB01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id4aoqB02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id4aoqC01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id4aoqC02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases

8. Citations (1)

9. Files and Curves (10)