3veq

A binary complex betwwen bovine pancreatic trypsin and a engineered mutant trypsin inhibitor

Method: X-RAY DIFFRACTION Dmax: 77.6 Å Quality: GOOD

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

Cationic trypsin

Bos taurus

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 B; UniProt 24–246 Mutation:I118V, S199A Chymotrypsin inhibitor 3 × 1 (P10822) CA CALCIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;293 K;VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 2.25 Å R-free 0.274

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 B; PDBConstruct 1–223; UniProt 24–246

Chymotrypsin inhibitor 3

Psophocarpus tetragonolobus

UniProt P10822

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 25–207 Mutation:L668A Cationic trypsin × 1 (P00760) CA CALCIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;293 K;VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 2.25 Å R-free 0.274

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 35 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name ICW3_PSOTE
Isoform
PDB entities 2
Chains and sequence ranges Author chain A; PDBConstruct 1–183; UniProt 25–207

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 3veq

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3veq
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3veq
Deposition date deposition_date2012-01-09
Structure title titleA binary complex betwwen bovine pancreatic trypsin and a engineered mutant trypsin inhibitor
Keywords keywordsHYDROLASE-HYDROLASE INHIBITOR complex; HYDROLASE/HYDROLASE INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier22.63
Radius of gyration Rg (electron density) rg_electron21.69
Forward intensity I(0) i031856000.00
Molecular weight molecular_weight42740.0 kDa
Excluded volume excluded_volume53178 ų
Envelope volume envelope_volume61228 ų
Hydration-shell volume shell_volume23693 ų
Envelope diameter envelope_diameter79.2
Shell Rg shell_rg28.34
Envelope Rg envelope_rg21.89
Shape Rg shape_rg21.68
Total Rg total_rg22.53
Total atoms total_atoms2999
Residues n_residues398
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 dmax77.6
Rg (real space) rg_real22.62
Rg uncertainty (real space) rg_real_error0.69
I(0) (real space) i0_real3.1860e+07
I(0) uncertainty (real space) i0_real_error4.1210e+05
Rg (reciprocal space) rg_reciprocal22.62
I(0) (reciprocal space) i0_reciprocal31860000.0000
Solution quality estimate total_estimate0.8681
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary25.9
Skewness Skewness skewness0.388
Kurtosis Kurtosis kurtosis-0.258
Angular range angular_range— – 0.3500 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha8761000.0000
Real-space data points n_real_points67
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.767; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.987; Smooth: 0.996

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd3veqa_
Class classb — All beta proteins
Fold Fold foldb.42 — beta-Trefoil
Superfamily Superfamily superfamilyb.42.4 — STI-like
Family Family familyb.42.4.1 — Kunitz (STI) inhibitors
Domain ID domain_idd3veqb_
Class classb — All beta proteins
Fold Fold foldb.47 — Trypsin-like serine proteases
Superfamily Superfamily superfamilyb.47.1 — Trypsin-like serine proteases
Family Family familyb.47.1.2 — Eukaryotic proteases

CATH v4.4 (3 domains)

Domain ID domain_id3veqA00
Class class2 — Mainly Beta
Architecture architecture80 — Trefoil
Topology topology10 — Trefoil (Acidic Fibroblast Growth Factor, subunit A)
Homologous superfamily homologous superfamily50
Domain ID domain_id3veqB01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id3veqB02
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)