5cmx

X-ray structure of the complex between human alpha thrombin and a duplex/quadruplex 31-mer DNA aptamer

Method: X-RAY DIFFRACTION Dmax: 81.4 Å Quality: REASONABLE

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

alpha thrombin-light chain

OrganismNot specified

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–DNA Homooligomer Protein × 2 DNA 1 PDB declaration: trimeric(3) Consistent with all polymer counts Chain H; UniProt 364–622 Chain L; UniProt 328–363 Not recorded RE31 × 1 0G6 D-phenylalanyl-N-[(2S,3S)-6-{[amino(iminio)methyl]amino}-1-chloro-2-hydroxyhexan-3-yl]-L-prolinamide × 1 K POTASSIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;293 K;0.2 M sodium malonate pH 7, 18 % PEG 3350 Resolution 2.98 Å R-free 0.231

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 564 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 L; PDBConstruct 1–36; UniProt 328–363 Author chain H; 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 5cmx

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 5cmx
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2. Structure Basics 2. Structure Basics

Entry ID entry_id5cmx
Deposition date deposition_date2015-07-17
Structure title titleX-ray structure of the complex between human alpha thrombin and a duplex/quadruplex 31-mer DNA aptamer
Keywords keywordsDNA aptamer, duplex/G-quadruplex fold, thrombin, exosite I, hydrolase; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier23.95
Radius of gyration Rg (electron density) rg_electron22.92
Forward intensity I(0) i064316300.00
Molecular weight molecular_weight38975.0 kDa
Excluded volume excluded_volume35977 ų
Envelope volume envelope_volume60806 ų
Hydration-shell volume shell_volume23273 ų
Envelope diameter envelope_diameter83.4
Shell Rg shell_rg28.63
Envelope Rg envelope_rg23.35
Shape Rg shape_rg22.65
Total Rg total_rg23.76
Total atoms total_atoms2888
Residues n_residues270
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 dmax81.4
Rg (real space) rg_real24.09
Rg uncertainty (real space) rg_real_error0.70
I(0) (real space) i0_real6.4320e+07
I(0) uncertainty (real space) i0_real_error9.7550e+05
Rg (reciprocal space) rg_reciprocal24.06
I(0) (reciprocal space) i0_reciprocal64310000.0000
Solution quality estimate total_estimate0.6743
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary25.4
Skewness Skewness skewness0.521
Kurtosis Kurtosis kurtosis-0.195
Angular range angular_range— – 0.3300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha7457000.0000
Real-space data points n_real_points65
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.784; Stabil: 1.000; Sysdev: 0.203; Positv: 1.000; Valcen: 0.877; Smooth: 0.924

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id5cmxH01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id5cmxH02
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)