1eaw

Crystal structure of the MTSP1 (matriptase)-BPTI (aprotinin) complex

Method: X-RAY DIFFRACTION Dmax: 119.2 Å Quality: REASONABLE

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

SUPPRESSOR OF TUMORIGENICITY 14

HOMO SAPIENS

UniProt Q9Y5Y6

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 615–855 Fragment:CATALYTIC RESIDUES 615-855 PANCREATIC TRYPSIN INHIBITOR × 1 (P00974) X-RAY DIFFRACTION X-ray crystallization conditions:pH 8;pH 8.00 Resolution 2.93 Å R-free 0.279
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 615–855 Fragment:CATALYTIC RESIDUES 615-855 PANCREATIC TRYPSIN INHIBITOR × 1 (P00974) X-RAY DIFFRACTION X-ray crystallization conditions:pH 8;pH 8.00 Resolution 2.93 Å R-free 0.279

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.

22 other PDB entries and 26 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name ST14_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–241; UniProt 615–855 Author chain C; PDBConstruct 1–241; UniProt 615–855

PANCREATIC TRYPSIN INHIBITOR

BOS TAURUS

UniProt P00974

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 36–93 Not recorded SUPPRESSOR OF TUMORIGENICITY 14 × 1 (Q9Y5Y6) X-RAY DIFFRACTION X-ray crystallization conditions:pH 8;pH 8.00 Resolution 2.93 Å R-free 0.279
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 36–93 Not recorded SUPPRESSOR OF TUMORIGENICITY 14 × 1 (Q9Y5Y6) X-RAY DIFFRACTION X-ray crystallization conditions:pH 8;pH 8.00 Resolution 2.93 Å R-free 0.279

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.

123 other PDB entries and 264 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name BPT1_BOVIN
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–58; UniProt 36–93 Author chain D; PDBConstruct 1–58; UniProt 36–93

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 1eaw

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id1eaw
Deposition date deposition_date2001-07-17
Structure title titleCrystal structure of the MTSP1 (matriptase)-BPTI (aprotinin) complex
Keywords keywords;HYDROLASE/INHIBITOR, COMPLEX (SERINE PROTEASE INHIBITOR), SERINE PROTEINASE, MATRIX DEGRADATION, INHIBITOR, GLYCOPROTE HYDROLASE, HYDROLASE-INHIBITOR complex ;; HYDROLASE/INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier31.52
Radius of gyration Rg (electron density) rg_electron31.28
Forward intensity I(0) i072233300.00
Molecular weight molecular_weight65655.0 kDa
Excluded volume excluded_volume81381 ų
Envelope volume envelope_volume100030 ų
Hydration-shell volume shell_volume28324 ų
Envelope diameter envelope_diameter122.7
Shell Rg shell_rg35.58
Envelope Rg envelope_rg31.85
Shape Rg shape_rg31.22
Total Rg total_rg31.81
Total atoms total_atoms4618
Residues n_residues594
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 dmax119.2
Rg (real space) rg_real32.01
Rg uncertainty (real space) rg_real_error1.25
I(0) (real space) i0_real7.2230e+07
I(0) uncertainty (real space) i0_real_error1.1190e+06
Rg (reciprocal space) rg_reciprocal31.80
I(0) (reciprocal space) i0_reciprocal72220000.0000
Solution quality estimate total_estimate0.7434
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary26.2
Skewness Skewness skewness0.640
Kurtosis Kurtosis kurtosis-0.101
Angular range angular_range— – 0.2500 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha16160000.0000
Real-space data points n_real_points51
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.447; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.430; Smooth: 0.888

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1eawa_
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_idd1eawb_
Class classg — Small proteins
Fold Fold foldg.8 — BPTI-like
Superfamily Superfamily superfamilyg.8.1 — BPTI-like
Family Family familyg.8.1.1 — Small Kunitz-type inhibitors & BPTI-like toxins
Domain ID domain_idd1eawc_
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_idd1eawd_
Class classg — Small proteins
Fold Fold foldg.8 — BPTI-like
Superfamily Superfamily superfamilyg.8.1 — BPTI-like
Family Family familyg.8.1.1 — Small Kunitz-type inhibitors & BPTI-like toxins

CATH v4.4 (6 domains)

Domain ID domain_id1eawA01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1eawA02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1eawB00
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology410 — Factor Xa Inhibitor
Homologous superfamily homologous superfamily10 — Pancreatic trypsin inhibitor Kunitz domain
Domain ID domain_id1eawC01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1eawC02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1eawD00
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology410 — Factor Xa Inhibitor
Homologous superfamily homologous superfamily10 — Pancreatic trypsin inhibitor Kunitz domain

8. Citations (1)

9. Files and Curves (10)