1xxd

Crystal Structure of the FXIa Catalytic Domain in Complex with mutated Ecotin

Method: X-RAY DIFFRACTION Dmax: 110.0 Å Quality: REASONABLE

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

Coagulation factor XI

Homo sapiens

UniProt P03951

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 × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 388–625 Chain B; UniProt 388–625 Fragment:Catalytic Domain Mutation:S75A, T115A Ecotin × 2 (P23827) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.3;293 K;PEG-MME 2000, Ammonium Sulfate, Sodium Cacodylate, pH 6.3, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 2.91 Å R-free 0.282

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.

113 other PDB entries and 120 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name FA11_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–238; UniProt 388–625 Author chain B; PDBConstruct 1–238; UniProt 388–625

Ecotin

Escherichia coli

UniProt P23827

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 × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain C; UniProt 21–162 Chain D; UniProt 21–162 Mutation:P80N, V81D, S82F, M84R, M85V, A86V Coagulation factor XI × 2 (P03951) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.3;293 K;PEG-MME 2000, Ammonium Sulfate, Sodium Cacodylate, pH 6.3, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 2.91 Å R-free 0.282

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.

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

View Construct and Data Evidence
UniProt name ECOT_ECOLI
Isoform
PDB entities 2
Chains and sequence ranges Author chain C; PDBConstruct 1–142; UniProt 21–162 Author chain D; PDBConstruct 1–142; UniProt 21–162

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 1xxd

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1xxd
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id1xxd
Deposition date deposition_date2004-11-04
Structure title titleCrystal Structure of the FXIa Catalytic Domain in Complex with mutated Ecotin
Keywords keywordsFXIa; Catalytic domain; Serine protein; Ecotin, BLOOD CLOTTING-HYDROLASE INHIBITOR COMPLEX; BLOOD CLOTTING/HYDROLASE INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier32.10
Radius of gyration Rg (electron density) rg_electron31.71
Forward intensity I(0) i0112377000.00
Molecular weight molecular_weight84716.0 kDa
Excluded volume excluded_volume106190 ų
Envelope volume envelope_volume135860 ų
Hydration-shell volume shell_volume36902 ų
Envelope diameter envelope_diameter115.2
Shell Rg shell_rg37.68
Envelope Rg envelope_rg31.31
Shape Rg shape_rg31.71
Total Rg total_rg32.19
Total atoms total_atoms5963
Residues n_residues711
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 dmax110.0
Rg (real space) rg_real32.32
Rg uncertainty (real space) rg_real_error0.84
I(0) (real space) i0_real1.1240e+08
I(0) uncertainty (real space) i0_real_error1.5660e+06
Rg (reciprocal space) rg_reciprocal32.23
I(0) (reciprocal space) i0_reciprocal112400000.0000
Solution quality estimate total_estimate0.6814
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary31.4
Skewness Skewness skewness0.493
Kurtosis Kurtosis kurtosis-0.301
Angular range angular_range— – 0.2450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha35490000.0000
Real-space data points n_real_points50
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.796; Stabil: 1.000; Sysdev: 0.242; Positv: 1.000; Valcen: 0.885; Smooth: 0.855

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_idd1xxda_
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_idd1xxdb_
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_idd1xxdc_
Class classb — All beta proteins
Fold Fold foldb.16 — Ecotin, trypsin inhibitor
Superfamily Superfamily superfamilyb.16.1 — Ecotin, trypsin inhibitor
Family Family familyb.16.1.1 — Ecotin, trypsin inhibitor
Domain ID domain_idd1xxdd_
Class classb — All beta proteins
Fold Fold foldb.16 — Ecotin, trypsin inhibitor
Superfamily Superfamily superfamilyb.16.1 — Ecotin, trypsin inhibitor
Family Family familyb.16.1.1 — Ecotin, trypsin inhibitor

CATH v4.4 (6 domains)

Domain ID domain_id1xxdA01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1xxdA02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1xxdB01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1xxdB02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1xxdC00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily550 — Ecotin
Domain ID domain_id1xxdD00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily550 — Ecotin

8. Citations (1)

9. Files and Curves (10)