1tbq

CRYSTAL STRUCTURE OF INSECT DERIVED DOUBLE DOMAIN KAZAL INHIBITOR RHODNIIN IN COMPLEX WITH THROMBIN

Method: X-RAY DIFFRACTION Dmax: 148.3 Å Quality: REASONABLE

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

THROMBIN

OrganismNot specified

UniProt P00735

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 × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain H; UniProt 367–625 Chain L; UniProt 318–366 Not recorded RHODNIIN × 1 (Q06684) X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 3.10 Å
2 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain J; UniProt 318–366 Chain K; UniProt 367–625 Not recorded RHODNIIN × 1 (Q06684) X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 3.10 Å

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.

30 other PDB entries and 54 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name THRB_BOVIN
Isoform
PDB entities 1, 2
Chains and sequence ranges Author chain J; PDBConstruct 22–49; UniProt 318–366 Author chain L; PDBConstruct 22–49; UniProt 318–366 Author chain H; PDBConstruct 1–259; UniProt 367–625 Author chain K; PDBConstruct 1–259; UniProt 367–625

RHODNIIN

Rhodnius prolixus

UniProt Q06684

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 × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain R; UniProt 1–103 Not recorded THROMBIN × 1 (P00735) THROMBIN × 1 (P00735) X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 3.10 Å
2 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain S; UniProt 1–103 Not recorded THROMBIN × 1 (P00735) THROMBIN × 1 (P00735) X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 3.10 Å

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 THBI_RHOPR
Isoform
PDB entities 3
Chains and sequence ranges Author chain R; PDBConstruct 1–103; UniProt 1–103 Author chain S; PDBConstruct 1–103; UniProt 1–103

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 1tbq

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1tbq
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1tbq
Deposition date deposition_date1995-03-02
Structure title titleCRYSTAL STRUCTURE OF INSECT DERIVED DOUBLE DOMAIN KAZAL INHIBITOR RHODNIIN IN COMPLEX WITH THROMBIN
Keywords keywordsCOMPLEX (SERINE PROTEASE-INHIBITOR), KAZAL-TYPE INHIBITOR, THROMBIN, COMPLEX (SERINE PROTEASE-INHIBITOR) complex; COMPLEX (SERINE PROTEASE/INHIBITOR)
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier43.75
Radius of gyration Rg (electron density) rg_electron43.98
Forward intensity I(0) i0136135000.00
Molecular weight molecular_weight93051.0 kDa
Excluded volume excluded_volume115140 ų
Envelope volume envelope_volume159920 ų
Hydration-shell volume shell_volume30745 ų
Envelope diameter envelope_diameter151.0
Shell Rg shell_rg48.45
Envelope Rg envelope_rg42.59
Shape Rg shape_rg43.97
Total Rg total_rg44.21
Total atoms total_atoms6838
Residues n_residues698
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 dmax148.3
Rg (real space) rg_real44.26
Rg uncertainty (real space) rg_real_error1.67
I(0) (real space) i0_real1.3610e+08
I(0) uncertainty (real space) i0_real_error2.5490e+06
Rg (reciprocal space) rg_reciprocal43.76
I(0) (reciprocal space) i0_reciprocal136100000.0000
Solution quality estimate total_estimate0.6346
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary28.8
Skewness Skewness skewness0.342
Kurtosis Kurtosis kurtosis-1.034
Angular range angular_range— – 0.1800 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha16500000.0000
Real-space data points n_real_points37
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.097; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.147; Smooth: 0.808

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (6 domains)

Domain ID domain_idd1tbq.1
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
Domain ID domain_idd1tbq.2
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
Domain ID domain_idd1tbqr1
Class classg — Small proteins
Fold Fold foldg.68 — Kazal-type serine protease inhibitors
Superfamily Superfamily superfamilyg.68.1 — Kazal-type serine protease inhibitors
Family Family familyg.68.1.1 — Ovomucoid domain III-like
Domain ID domain_idd1tbqr2
Class classg — Small proteins
Fold Fold foldg.68 — Kazal-type serine protease inhibitors
Superfamily Superfamily superfamilyg.68.1 — Kazal-type serine protease inhibitors
Family Family familyg.68.1.1 — Ovomucoid domain III-like
Domain ID domain_idd1tbqs1
Class classg — Small proteins
Fold Fold foldg.68 — Kazal-type serine protease inhibitors
Superfamily Superfamily superfamilyg.68.1 — Kazal-type serine protease inhibitors
Family Family familyg.68.1.1 — Ovomucoid domain III-like
Domain ID domain_idd1tbqs2
Class classg — Small proteins
Fold Fold foldg.68 — Kazal-type serine protease inhibitors
Superfamily Superfamily superfamilyg.68.1 — Kazal-type serine protease inhibitors
Family Family familyg.68.1.1 — Ovomucoid domain III-like

CATH v4.4 (10 domains)

Domain ID domain_id1tbqH01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1tbqH02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1tbqJ00
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology140 — Epsilon-Thrombin; Chain L
Homologous superfamily homologous superfamily10 — Thrombin light chain domain
Domain ID domain_id1tbqK01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1tbqK02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1tbqL00
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology140 — Epsilon-Thrombin; Chain L
Homologous superfamily homologous superfamily10 — Thrombin light chain domain
Domain ID domain_id1tbqR01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily30
Domain ID domain_id1tbqR02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily30
Domain ID domain_id1tbqS01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily30
Domain ID domain_id1tbqS02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily30

8. Citations (7)

9. Files and Curves (10)