2zdk

Exploring Trypsin S3 Pocket

Method: X-RAY DIFFRACTION Dmax: 52.7 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 monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 21–243 Not recorded CA CALCIUM ION × 1 SO4 SULFATE ION × 1 50U (S)-N-(4-carbamimidoylbenzyl)-1-(3-cyclohexylpropanoyl)pyrrolidine-2-carboxamide × 1 DMS DIMETHYL SULFOXIDE × 1 GOL GLYCEROL × 7 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7;289 K;0.1M Imidazole buffer, 0.1M ammonium sulfate, 25% PEG 8000, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 289K Resolution 1.67 Å R-free 0.193

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 21–243

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 2zdk

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2zdk
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2. Structure Basics 2. Structure Basics

Entry ID entry_id2zdk
Deposition date deposition_date2007-11-26
Structure title titleExploring Trypsin S3 Pocket
Keywords keywordsHydrolase Inhibitors, Digestion, Metal-binding, Protease, Secreted, Serine protease, Zymogen, Hydrolase-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_guinier17.26
Radius of gyration Rg (electron density) rg_electron16.05
Forward intensity I(0) i011401200.00
Molecular weight molecular_weight24319.0 kDa
Excluded volume excluded_volume30061 ų
Envelope volume envelope_volume32707 ų
Hydration-shell volume shell_volume16732 ų
Envelope diameter envelope_diameter52.0
Shell Rg shell_rg22.50
Envelope Rg envelope_rg16.32
Shape Rg shape_rg16.02
Total Rg total_rg17.09
Total atoms total_atoms1693
Residues n_residues220
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 dmax52.7
Rg (real space) rg_real17.13
Rg uncertainty (real space) rg_real_error0.23
I(0) (real space) i0_real1.1400e+07
I(0) uncertainty (real space) i0_real_error1.2290e+05
Rg (reciprocal space) rg_reciprocal17.15
I(0) (reciprocal space) i0_reciprocal11400000.0000
Solution quality estimate total_estimate0.9027
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary22.2
Skewness Skewness skewness0.119
Kurtosis Kurtosis kurtosis-0.458
Angular range angular_range— – 0.4600 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha3187000.0000
Real-space data points n_real_points77
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.918; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.987; Smooth: 0.989

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

7. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd2zdka_
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 (2 domains)

Domain ID domain_id2zdkA01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id2zdkA02
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)