4cch

Crystal structure of the large fragment of DNA polymerase I from Thermus Aquaticus in an open binary complex with d5SICS as templating nucleotide

Method: X-RAY DIFFRACTION Dmax: 81.9 Å Quality: REASONABLE

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:KLENOW FRAGMENT, RESIDUES 293-832 5'-D(*GP*AP*CP*CP*AP*CP*GP*GP*CP*GP*CP*DOC)-3' × 1 ;5'-D(*AP*AP*CP*LHOP*GP*GP*CP*GP*CP*CP*GP*TP*GP*GP*TP* C)-3' ; × 1 FMT FORMIC ACID × 4 MG MAGNESIUM ION × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8;20% W/V PEG 8000, 0.1M TRIS PH 8.0, 0.2M MAGNESIUM FORMATE, 20% GLYCEROL Resolution 2.55 Å R-free 0.261

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 4cch

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id4cch
Deposition date deposition_date2013-10-23
Structure title titleCrystal structure of the large fragment of DNA polymerase I from Thermus Aquaticus in an open binary complex with d5SICS as templating nucleotide
Keywords keywordsTRANSFERASE-DNA COMPLEX, UNNATURAL NUCLEOTIDE, ARTIFICIAL NUCLEOTIDE, BINARY COMPLEX, KLENTAQ; TRANSFERASE/DNA
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier26.21
Radius of gyration Rg (electron density) rg_electron25.48
Forward intensity I(0) i084763900.00
Molecular weight molecular_weight67611.0 kDa
Excluded volume excluded_volume82773 ų
Envelope volume envelope_volume104050 ų
Hydration-shell volume shell_volume33373 ų
Envelope diameter envelope_diameter85.8
Shell Rg shell_rg33.53
Envelope Rg envelope_rg25.40
Shape Rg shape_rg25.52
Total Rg total_rg26.18
Total atoms total_atoms9286
Residues n_residues551
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 dmax81.9
Rg (real space) rg_real26.05
Rg uncertainty (real space) rg_real_error0.37
I(0) (real space) i0_real8.4760e+07
I(0) uncertainty (real space) i0_real_error1.1660e+06
Rg (reciprocal space) rg_reciprocal26.10
I(0) (reciprocal space) i0_reciprocal84770000.0000
Solution quality estimate total_estimate0.7218
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary33.6
Skewness Skewness skewness0.149
Kurtosis Kurtosis kurtosis-0.442
Angular range angular_range— – 0.3050 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha11810000.0000
Real-space data points n_real_points62
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.912; Stabil: 1.000; Sysdev: 0.221; Positv: 1.000; Valcen: 0.989; Smooth: 0.993

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

7. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id4cchA01
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_id4cchA02
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_id4cchA03
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily370
Domain ID domain_id4cchA04
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)