4dlg

Ternary Structure of the large Fragment of Taq DNA polymerase

Method: X-RAY DIFFRACTION Dmax: 82.6 Å Quality: GOOD

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

DNA polymerase I, thermostable

Thermus aquaticus

UniProt P19821

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 Monomer Protein × 1 DNA 2 PDB declaration: trimeric(3) Consistent with all polymer counts Chain A; UniProt 293–832 Fragment:UNP residues 293-832 DNA primer × 1 DNA template × 1 DCT 2',3'-DIDEOXYCYTIDINE 5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 2 ACT ACETATE ION × 3 GOL GLYCEROL × 3 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 6.5;291 K;50 mM Na cacodylate, 0.2 M NH4(OAc), 10 mM Mg(OAc)2, 15% PEG 8000, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K Resolution 1.89 Å R-free 0.252

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.

81 other PDB entries and 83 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name DPO1_THEAQ
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–540; UniProt 293–832

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 4dlg

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4dlg
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4dlg
Deposition date deposition_date2012-02-06
Structure title titleTernary Structure of the large Fragment of Taq DNA polymerase
Keywords keywordsDNA polymerase, ternary complex, A family, DNA synthesis, Transferase-DNA complex; Transferase/DNA
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier25.61
Radius of gyration Rg (electron density) rg_electron25.00
Forward intensity I(0) i091347200.00
Molecular weight molecular_weight69790.0 kDa
Excluded volume excluded_volume85150 ų
Envelope volume envelope_volume104070 ų
Hydration-shell volume shell_volume33749 ų
Envelope diameter envelope_diameter85.6
Shell Rg shell_rg33.05
Envelope Rg envelope_rg25.06
Shape Rg shape_rg25.04
Total Rg total_rg25.65
Total atoms total_atoms4881
Residues n_residues565
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 dmax82.6
Rg (real space) rg_real25.48
Rg uncertainty (real space) rg_real_error0.41
I(0) (real space) i0_real9.1350e+07
I(0) uncertainty (real space) i0_real_error1.1690e+06
Rg (reciprocal space) rg_reciprocal25.52
I(0) (reciprocal space) i0_reciprocal91350000.0000
Solution quality estimate total_estimate0.8901
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary32.0
Skewness Skewness skewness0.195
Kurtosis Kurtosis kurtosis-0.366
Angular range angular_range— – 0.3100 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha14310000.0000
Real-space data points n_real_points63
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.861; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.990; Smooth: 0.994

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_idd4dlga1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamilyc.55.3 — Ribonuclease H-like
Family Family familyc.55.3.5 — DnaQ-like 3'-5' exonuclease
Domain ID domain_idd4dlga2
Class classe — Multi-domain proteins (alpha and beta)
Fold Fold folde.8 — DNA/RNA polymerases
Superfamily Superfamily superfamilye.8.1 — DNA/RNA polymerases
Family Family familye.8.1.1 — DNA polymerase I

CATH v4.4 (4 domains)

Domain ID domain_id4dlgA01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily10 — Ribonuclease H-like superfamily/Ribonuclease H
Domain ID domain_id4dlgA02
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1060 — Taq DNA Polymerase; Chain T, domain 4
Homologous superfamily homologous superfamily10 — Taq DNA Polymerase; Chain T, domain 4
Domain ID domain_id4dlgA03
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily370
Domain ID domain_id4dlgA04
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily20 — 5' to 3' exonuclease, C-terminal subdomain

8. Citations (1)

9. Files and Curves (10)