4abi

Co-complex structure of bovine trypsin with a modified Bowman-Birk inhibitor (PtA)SFTI-1(1,14), that was 1,4-disubstituted with a 1,2,3- trizol to mimic a trans amide bond

Method: X-RAY DIFFRACTION Dmax: 52.9 Å Quality: EXCELLENT

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 PTA-SFTI INHIBITOR × 1 (Q4GWU5) CA CALCIUM ION × 1 DMF DIMETHYLFORMAMIDE × 3 GOL GLYCEROL × 7 SO4 SULFATE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:1.85 M (NH4)2SO4,50 MM TRIS PH 8.5 WITH 60 MG/ML TRYPSIN (SIGMA T1246) IN 0.3 M (NH4)2SO4, 6 MM CACL2, 0.1 M TRIS PH 8.15, 60 MM BENZAMIDINE. TO 10 UL PROTEIN SOL 0.5 UL DIMETHYLFORMAMID WAS ADDED PRIOR CRYSTAL SET UP. CRYSTALS WERE SOAKED WITH PTA-SFTI (ADDED IN LYOPHYLIZED FORM TO THE CRYSTALLIZATION DROP AFTER 2 WEEKS CRYSTAL GROWTH). TOTAL SOAKING TIME 8 DAYS. Resolution 1.55 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 770 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

PTA-SFTI INHIBITOR

OrganismNot specified

UniProt Q4GWU5

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 40–53 Non-standard monomer:Yes (specific site not provided by mmCIF) CATIONIC TRYPSIN × 1 (P00760) CA CALCIUM ION × 1 DMF DIMETHYLFORMAMIDE × 3 GOL GLYCEROL × 7 SO4 SULFATE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:1.85 M (NH4)2SO4,50 MM TRIS PH 8.5 WITH 60 MG/ML TRYPSIN (SIGMA T1246) IN 0.3 M (NH4)2SO4, 6 MM CACL2, 0.1 M TRIS PH 8.15, 60 MM BENZAMIDINE. TO 10 UL PROTEIN SOL 0.5 UL DIMETHYLFORMAMID WAS ADDED PRIOR CRYSTAL SET UP. CRYSTALS WERE SOAKED WITH PTA-SFTI (ADDED IN LYOPHYLIZED FORM TO THE CRYSTALLIZATION DROP AFTER 2 WEEKS CRYSTAL GROWTH). TOTAL SOAKING TIME 8 DAYS. Resolution 1.55 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.

19 other PDB entries and 20 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name SFTI1_HELAN
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–13; UniProt 40–53

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 4abi

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4abi
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id4abi
Deposition date deposition_date2011-12-08
Structure title titleCo-complex structure of bovine trypsin with a modified Bowman-Birk inhibitor (PtA)SFTI-1(1,14), that was 1,4-disubstituted with a 1,2,3- trizol to mimic a trans amide bond
Keywords keywordsHYDROLASE-INHIBITOR COMPLEX, AMIDE MIMICS; HYDROLASE/INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier17.30
Radius of gyration Rg (electron density) rg_electron16.13
Forward intensity I(0) i012694200.00
Molecular weight molecular_weight25713.0 kDa
Excluded volume excluded_volume31752 ų
Envelope volume envelope_volume34493 ų
Hydration-shell volume shell_volume17408 ų
Envelope diameter envelope_diameter53.3
Shell Rg shell_rg22.78
Envelope Rg envelope_rg16.42
Shape Rg shape_rg16.10
Total Rg total_rg17.18
Total atoms total_atoms1787
Residues n_residues233
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 dmax52.9
Rg (real space) rg_real17.17
Rg uncertainty (real space) rg_real_error0.27
I(0) (real space) i0_real1.2690e+07
I(0) uncertainty (real space) i0_real_error1.6010e+05
Rg (reciprocal space) rg_reciprocal17.18
I(0) (reciprocal space) i0_reciprocal12690000.0000
Solution quality estimate total_estimate0.9002
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary22.3
Skewness Skewness skewness0.116
Kurtosis Kurtosis kurtosis-0.449
Angular range angular_range— – 0.4600 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4168000.0000
Real-space data points n_real_points77
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.908; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.984; Smooth: 0.992

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

7. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id4abiA01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id4abiA02
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)