1sks

Binary 3' complex of T7 DNA polymerase with a DNA primer/template containing a cis-syn thymine dimer on the template

Method: X-RAY DIFFRACTION Dmax: 112.7 Å Quality: GOOD

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

DNA polymerase

Enterobacteria phage T7

UniProt P00581

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 Heteromer Protein × 2 DNA 2 PDB declaration: tetrameric(4) Consistent with all polymer counts Chain A; UniProt 1–704 Mutation:DEL(118-123) 5'-D(*CP*GP*AP*AP*AP*AP*CP*GP*AP*C*GP*GP*CP*CP*AP*GP*TP*GP*CP*CP*(2DT))-3' × 1 5'-D(*CP*CP*CP*(TTD)P*AP*GP*GP*CP*AP*CP*TP*GP*GP*CP*CP*GP*TP*CP*GP*TP*TP*TP*TP*CP*G)-3' × 1 Thioredoxin 1 × 1 (P0AA25) MG MAGNESIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 7.5;VAPOR DIFFUSION, HANGING DROP, pH 7.5 Resolution 2.30 Å R-free 0.266

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.

23 other PDB entries and 28 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name DPOL_BPT7
Isoform
PDB entities 3
Chains and sequence ranges Author chain A; PDBConstruct 1–698; UniProt 1–704

Thioredoxin 1

Escherichia coli

UniProt P0AA25

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 Heteromer Protein × 2 DNA 2 PDB declaration: tetrameric(4) Consistent with all polymer counts Chain B; UniProt 1–108 Not recorded 5'-D(*CP*GP*AP*AP*AP*AP*CP*GP*AP*C*GP*GP*CP*CP*AP*GP*TP*GP*CP*CP*(2DT))-3' × 1 5'-D(*CP*CP*CP*(TTD)P*AP*GP*GP*CP*AP*CP*TP*GP*GP*CP*CP*GP*TP*CP*GP*TP*TP*TP*TP*CP*G)-3' × 1 DNA polymerase × 1 (P00581) MG MAGNESIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 7.5;VAPOR DIFFUSION, HANGING DROP, pH 7.5 Resolution 2.30 Å R-free 0.266

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.

52 other PDB entries and 100 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name THIO_ECOLI
Isoform
PDB entities 4
Chains and sequence ranges Author chain B; PDBConstruct 1–108; UniProt 1–108

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 1sks

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id1sks
Deposition date deposition_date2004-03-05
Structure title titleBinary 3' complex of T7 DNA polymerase with a DNA primer/template containing a cis-syn thymine dimer on the template
Keywords keywordsDNA polymerase, lesion bypass, fidelity, open, close, TRANSFERASE-ELECTRON TRANSPORT-DNA COMPLEX; TRANSFERASE/ELECTRON TRANSPORT/DNA
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier33.63
Radius of gyration Rg (electron density) rg_electron34.22
Forward intensity I(0) i0150091000.00
Molecular weight molecular_weight93578.0 kDa
Excluded volume excluded_volume115230 ų
Envelope volume envelope_volume155320 ų
Hydration-shell volume shell_volume39730 ų
Envelope diameter envelope_diameter118.0
Shell Rg shell_rg38.75
Envelope Rg envelope_rg34.24
Shape Rg shape_rg34.24
Total Rg total_rg34.49
Total atoms total_atoms6572
Residues n_residues807
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 dmax112.7
Rg (real space) rg_real33.81
Rg uncertainty (real space) rg_real_error0.84
I(0) (real space) i0_real1.5010e+08
I(0) uncertainty (real space) i0_real_error2.2390e+06
Rg (reciprocal space) rg_reciprocal33.70
I(0) (reciprocal space) i0_reciprocal150100000.0000
Solution quality estimate total_estimate0.8465
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary36.0
Skewness Skewness skewness0.527
Kurtosis Kurtosis kurtosis-0.245
Angular range angular_range— – 0.2350 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha27780000.0000
Real-space data points n_real_points48
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.799; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.892; Smooth: 0.712

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd1sksa1
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_idd1sksa2
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
Domain ID domain_idd1sksb_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.47 — Thioredoxin fold
Superfamily Superfamily superfamilyc.47.1 — Thioredoxin-like
Family Family familyc.47.1.1 — Thioltransferase

CATH v4.4 (5 domains)

Domain ID domain_id1sksA01
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_id1sksA02
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_id1sksA03
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily370
Domain ID domain_id1sksA04
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
Domain ID domain_id1sksB00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology30 — Glutaredoxin
Homologous superfamily homologous superfamily10 — Glutaredoxin

8. Citations (1)

9. Files and Curves (10)