3dd2

Crystal structure of an RNA aptamer bound to human thrombin

Method: X-RAY DIFFRACTION Dmax: 78.2 Å Quality: GOOD

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

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–RNA Homooligomer Protein × 2 RNA 1 PDB declaration: trimeric(3) Consistent with all polymer counts Chain H; UniProt 364–621 Chain L; UniProt 332–361 Not recorded RNA (26-MER) × 1 PEG DI(HYDROXYETHYL)ETHER × 3 0G6 D-phenylalanyl-N-[(2S,3S)-6-{[amino(iminio)methyl]amino}-1-chloro-2-hydroxyhexan-3-yl]-L-prolinamide × 1 MG MAGNESIUM ION × 2 P6G HEXAETHYLENE GLYCOL × 1 ACY ACETIC ACID × 6 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;290 K;PEG 8000, Magnesium Acetate, Sodium Cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K Resolution 1.90 Å R-free 0.254

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 1–30; UniProt 332–361 Author chain H; PDBConstruct 1–258; UniProt 364–621

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 3dd2

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3dd2
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3dd2
Deposition date deposition_date2008-06-04
Structure title titleCrystal structure of an RNA aptamer bound to human thrombin
Keywords keywordsthrombin, aptamer, RNA, DNA, heparin, exosite, Protease, Serine protease, Hydrolase-Hydrolase inhibitor-RNA COMPLEX; Hydrolase/HYDROLASE INHIBITOR/RNA
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier21.49
Radius of gyration Rg (electron density) rg_electron20.41
Forward intensity I(0) i067027000.00
Molecular weight molecular_weight39922.0 kDa
Excluded volume excluded_volume36934 ų
Envelope volume envelope_volume60103 ų
Hydration-shell volume shell_volume24196 ų
Envelope diameter envelope_diameter78.2
Shell Rg shell_rg27.68
Envelope Rg envelope_rg20.67
Shape Rg shape_rg20.27
Total Rg total_rg21.23
Total atoms total_atoms2961
Residues n_residues260
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 dmax78.2
Rg (real space) rg_real21.40
Rg uncertainty (real space) rg_real_error0.58
I(0) (real space) i0_real6.7030e+07
I(0) uncertainty (real space) i0_real_error9.6090e+05
Rg (reciprocal space) rg_reciprocal21.42
I(0) (reciprocal space) i0_reciprocal67030000.0000
Solution quality estimate total_estimate0.8397
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary26.5
Skewness Skewness skewness0.271
Kurtosis Kurtosis kurtosis-0.265
Angular range angular_range— – 0.3700 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha13210000.0000
Real-space data points n_real_points69
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.652; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.955; Smooth: 0.999

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (9)

7. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id3dd2H01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily10 — Trypsin-like serine proteases
Domain ID domain_id3dd2H02
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)