3k75

X-ray crystal structure of reduced XRCC1 bound to DNA pol beta catalytic domain

Method: X-RAY DIFFRACTION Dmax: 115.5 Å Quality: GOOD

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

DNA repair protein XRCC1

Homo sapiens

UniProt P18887

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 1–183 Fragment:N-terminal domain (UNP residues 1 to 183) DNA polymerase beta × 1 (P06766) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;298 K;20-25% PEG 3350, 0.2-0.3M Tri-potassium citrate, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.95 Å R-free 0.295
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 1–183 Fragment:N-terminal domain (UNP residues 1 to 183) DNA polymerase beta × 1 (P06766) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;298 K;20-25% PEG 3350, 0.2-0.3M Tri-potassium citrate, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.95 Å R-free 0.295

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.

10 other PDB entries and 22 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name XRCC1_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain B; PDBConstruct 1–183; UniProt 1–183 Author chain C; PDBConstruct 1–183; UniProt 1–183

DNA polymerase beta

Rattus norvegicus

UniProt P06766

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 91–335 Fragment:UNP residues 91 to 335 DNA repair protein XRCC1 × 1 (P18887) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;298 K;20-25% PEG 3350, 0.2-0.3M Tri-potassium citrate, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.95 Å R-free 0.295
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain E; UniProt 91–335 Fragment:UNP residues 91 to 335 DNA repair protein XRCC1 × 1 (P18887) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;298 K;20-25% PEG 3350, 0.2-0.3M Tri-potassium citrate, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.95 Å R-free 0.295

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.

30 other PDB entries and 36 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name DPOLB_RAT
Isoform
PDB entities 2
Chains and sequence ranges Author chain D; PDBConstruct 2–246; UniProt 91–335 Author chain E; PDBConstruct 2–246; UniProt 91–335

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 3k75

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3k75
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3k75
Deposition date deposition_date2009-10-12
Structure title titleX-ray crystal structure of reduced XRCC1 bound to DNA pol beta catalytic domain
Keywords keywords;allosteric disulfide, XRCC1, pol beta, DNA damage, DNA repair, Nucleus, Phosphoprotein, DNA replication, DNA synthesis, DNA-binding, DNA-directed DNA polymerase, Lyase, Magnesium, Metal-binding, Methylation, Nucleotidyltransferase, Transferase, DNA-BINDING PROTEIN, DNA BINDING PROTEIN ;; DNA BINDING PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier38.63
Radius of gyration Rg (electron density) rg_electron37.81
Forward intensity I(0) i0129152000.00
Molecular weight molecular_weight89263.0 kDa
Excluded volume excluded_volume110880 ų
Envelope volume envelope_volume163390 ų
Hydration-shell volume shell_volume37095 ų
Envelope diameter envelope_diameter117.3
Shell Rg shell_rg43.32
Envelope Rg envelope_rg35.82
Shape Rg shape_rg37.80
Total Rg total_rg38.20
Total atoms total_atoms6282
Residues n_residues791
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 dmax115.5
Rg (real space) rg_real38.54
Rg uncertainty (real space) rg_real_error0.84
I(0) (real space) i0_real1.2920e+08
I(0) uncertainty (real space) i0_real_error2.1940e+06
Rg (reciprocal space) rg_reciprocal38.60
I(0) (reciprocal space) i0_reciprocal129200000.0000
Solution quality estimate total_estimate0.8800
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary62.0
Skewness Skewness skewness0.020
Kurtosis Kurtosis kurtosis-0.940
Angular range angular_range— – 0.2050 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha11160000.0000
Real-space data points n_real_points42
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.907; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.952; Smooth: 0.762

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 15 domains

SCOP 2.08 (7 domains)

Domain ID domain_idd3k75b_
Class classb — All beta proteins
Fold Fold foldb.18 — Galactose-binding domain-like
Superfamily Superfamily superfamilyb.18.1 — Galactose-binding domain-like
Family Family familyb.18.1.8 — N-terminal domain of xrcc1
Domain ID domain_idd3k75c_
Class classb — All beta proteins
Fold Fold foldb.18 — Galactose-binding domain-like
Superfamily Superfamily superfamilyb.18.1 — Galactose-binding domain-like
Family Family familyb.18.1.8 — N-terminal domain of xrcc1
Domain ID domain_idd3k75d1
Class classa — All alpha proteins
Fold Fold folda.60 — SAM domain-like
Superfamily Superfamily superfamilya.60.12 — PsbU/PolX domain-like
Family Family familya.60.12.1 — DNA polymerase beta-like, second domain
Domain ID domain_idd3k75d2
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.218 — Nucleotidyltransferase
Superfamily Superfamily superfamilyd.218.1 — Nucleotidyltransferase
Family Family familyd.218.1.2 — DNA polymerase beta-like
Domain ID domain_idd3k75d3
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd3k75e1
Class classa — All alpha proteins
Fold Fold folda.60 — SAM domain-like
Superfamily Superfamily superfamilya.60.12 — PsbU/PolX domain-like
Family Family familya.60.12.1 — DNA polymerase beta-like, second domain
Domain ID domain_idd3k75e2
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.218 — Nucleotidyltransferase
Superfamily Superfamily superfamilyd.218.1 — Nucleotidyltransferase
Family Family familyd.218.1.2 — DNA polymerase beta-like

CATH v4.4 (8 domains)

Domain ID domain_id3k75B00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily260 — Galactose-binding domain-like
Domain ID domain_id3k75C00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily260 — Galactose-binding domain-like
Domain ID domain_id3k75D01
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_id3k75D02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology460 — Beta Polymerase; domain 2
Homologous superfamily homologous superfamily10 — Beta Polymerase, domain 2
Domain ID domain_id3k75D03
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology210 — Beta Polymerase; domain 3
Homologous superfamily homologous superfamily10 — DNA polymerase, thumb domain
Domain ID domain_id3k75E01
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_id3k75E02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology460 — Beta Polymerase; domain 2
Homologous superfamily homologous superfamily10 — Beta Polymerase, domain 2
Domain ID domain_id3k75E03
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology210 — Beta Polymerase; domain 3
Homologous superfamily homologous superfamily10 — DNA polymerase, thumb domain

8. Citations (1)

9. Files and Curves (10)