1sgi

Crystal structure of the anticoagulant slow form of thrombin

Method: X-RAY DIFFRACTION Dmax: 90.4 Å Quality: GOOD

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

thrombin

Homo sapiens

UniProt P00734

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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 328–363 Chain B; UniProt 364–622 Fragment:THROMBIN LIGHT CHAIN (A) Fragment:THROMBIN HEAVY CHAIN (B) Mutation:R(77a)A NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;298 K;14% PEG 2000-MME, 0.1 M Tris, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.30 Å R-free 0.251
2 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 328–363 Chain E; UniProt 364–622 Fragment:THROMBIN LIGHT CHAIN (A) Fragment:THROMBIN HEAVY CHAIN (B) Mutation:R(77a)A NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;298 K;14% PEG 2000-MME, 0.1 M Tris, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.30 Å R-free 0.251

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.

475 other PDB entries and 563 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name THRB_HUMAN
Isoform
PDB entities 1, 2
Chains and sequence ranges Author chain A; PDBConstruct 1–36; UniProt 328–363 Author chain D; PDBConstruct 1–36; UniProt 328–363 Author chain B; PDBConstruct 1–259; UniProt 364–622 Author chain E; PDBConstruct 1–259; UniProt 364–622

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 1sgi

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id1sgi
Deposition date deposition_date2004-02-23
Structure title titleCrystal structure of the anticoagulant slow form of thrombin
Keywords keywordsthrombin, allostery, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier28.24
Radius of gyration Rg (electron density) rg_electron27.58
Forward intensity I(0) i068024000.00
Molecular weight molecular_weight64731.0 kDa
Excluded volume excluded_volume81067 ų
Envelope volume envelope_volume97617 ų
Hydration-shell volume shell_volume29796 ų
Envelope diameter envelope_diameter92.1
Shell Rg shell_rg34.63
Envelope Rg envelope_rg27.63
Shape Rg shape_rg27.58
Total Rg total_rg28.30
Total atoms total_atoms4552
Residues n_residues484
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 dmax90.4
Rg (real space) rg_real28.35
Rg uncertainty (real space) rg_real_error0.49
I(0) (real space) i0_real6.8020e+07
I(0) uncertainty (real space) i0_real_error9.2080e+05
Rg (reciprocal space) rg_reciprocal28.32
I(0) (reciprocal space) i0_reciprocal68020000.0000
Solution quality estimate total_estimate0.8766
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary27.4
Skewness Skewness skewness0.372
Kurtosis Kurtosis kurtosis-0.626
Angular range angular_range— – 0.2800 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha45900000.0000
Real-space data points n_real_points57
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: 0.930; Smooth: 0.925

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1sgi.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_idd1sgi.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

CATH v4.4 (4 domains)

Domain ID domain_id1sgiB01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1sgiB02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1sgiE01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id1sgiE02
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)