3ssb

Structure of Insect Metalloproteinase Inhibitor in Complex with Thermolysin

Method: X-RAY DIFFRACTION Dmax: 108.6 Å Quality: GOOD

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

Thermolysin

OrganismNot specified

UniProt P00800

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 A; UniProt 233–548 Not recorded Inducible metalloproteinase inhibitor protein × 1 (P82176) Inducible metalloproteinase inhibitor protein × 1 (P82176) GOL GLYCEROL × 2 ZN ZINC ION × 1 CA CALCIUM ION × 3 NA SODIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 8.5;293 K;20% w/v PEG 4000, 0.2 M sodium acetate, 0.1 M Tris-HCl, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 1.80 Å R-free 0.193
2 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain B; UniProt 233–548 Not recorded Inducible metalloproteinase inhibitor protein × 1 (P82176) Inducible metalloproteinase inhibitor protein × 1 (P82176) GOL GLYCEROL × 1 ZN ZINC ION × 1 CA CALCIUM ION × 3 NA SODIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 8.5;293 K;20% w/v PEG 4000, 0.2 M sodium acetate, 0.1 M Tris-HCl, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 1.80 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.

204 other PDB entries and 205 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name THER_BACTH
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–316; UniProt 233–548 Author chain B; PDBConstruct 1–316; UniProt 233–548

Inducible metalloproteinase inhibitor protein

Galleria mellonella

UniProt P82176

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 C; UniProt 19–56 Chain I; UniProt 57–88 Fragment:UNP residues 19-56 Fragment:UNP residues 57-88 Thermolysin × 1 (P00800) GOL GLYCEROL × 2 ZN ZINC ION × 1 CA CALCIUM ION × 3 NA SODIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 8.5;293 K;20% w/v PEG 4000, 0.2 M sodium acetate, 0.1 M Tris-HCl, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 1.80 Å R-free 0.193
2 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain D; UniProt 19–56 Chain J; UniProt 57–88 Fragment:UNP residues 19-56 Fragment:UNP residues 57-88 Thermolysin × 1 (P00800) GOL GLYCEROL × 1 ZN ZINC ION × 1 CA CALCIUM ION × 3 NA SODIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 8.5;293 K;20% w/v PEG 4000, 0.2 M sodium acetate, 0.1 M Tris-HCl, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 1.80 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.

2 other PDB entries and 4 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IMPI_GALME
Isoform
PDB entities 2, 3
Chains and sequence ranges Author chain C; PDBConstruct 3–40; UniProt 19–56 Author chain D; PDBConstruct 3–40; UniProt 19–56 Author chain I; PDBConstruct 1–32; UniProt 57–88 Author chain J; PDBConstruct 1–32; UniProt 57–88

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 3ssb

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id3ssb
Deposition date deposition_date2011-07-08
Structure title titleStructure of Insect Metalloproteinase Inhibitor in Complex with Thermolysin
Keywords keywords;Thermolysin fold - Family I8 fold, Metalloprotease Thermolysin inhibitor, Zn Binding, Secreted, 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_guinier32.29
Radius of gyration Rg (electron density) rg_electron32.13
Forward intensity I(0) i0118690000.00
Molecular weight molecular_weight83533.0 kDa
Excluded volume excluded_volume102770 ų
Envelope volume envelope_volume126770 ų
Hydration-shell volume shell_volume33860 ų
Envelope diameter envelope_diameter114.0
Shell Rg shell_rg37.89
Envelope Rg envelope_rg31.93
Shape Rg shape_rg32.12
Total Rg total_rg32.61
Total atoms total_atoms5870
Residues n_residues760
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 dmax108.6
Rg (real space) rg_real32.47
Rg uncertainty (real space) rg_real_error0.81
I(0) (real space) i0_real1.1870e+08
I(0) uncertainty (real space) i0_real_error1.8720e+06
Rg (reciprocal space) rg_reciprocal32.40
I(0) (reciprocal space) i0_reciprocal118700000.0000
Solution quality estimate total_estimate0.8721
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary28.8
Skewness Skewness skewness0.410
Kurtosis Kurtosis kurtosis-0.488
Angular range angular_range— – 0.2450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha24320000.0000
Real-space data points n_real_points50
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.845; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.878; Smooth: 0.920

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (8)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd3ssba_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.92 — Zincin-like
Superfamily Superfamily superfamilyd.92.1 — Metalloproteases ('zincins'), catalytic domain
Family Family familyd.92.1.2 — Thermolysin-like
Domain ID domain_idd3ssbb_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.92 — Zincin-like
Superfamily Superfamily superfamilyd.92.1 — Metalloproteases ('zincins'), catalytic domain
Family Family familyd.92.1.2 — Thermolysin-like

CATH v4.4 (4 domains)

Domain ID domain_id3ssbA01
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology170 — Elastase; domain 1
Homologous superfamily homologous superfamily10
Domain ID domain_id3ssbA02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology390 — Neutral Protease; domain 2
Homologous superfamily homologous superfamily10 — Neutral Protease Domain 2
Domain ID domain_id3ssbB01
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology170 — Elastase; domain 1
Homologous superfamily homologous superfamily10
Domain ID domain_id3ssbB02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology390 — Neutral Protease; domain 2
Homologous superfamily homologous superfamily10 — Neutral Protease Domain 2

8. Citations (1)

9. Files and Curves (10)