3k77

X-ray crystal structure of XRCC1

Method: X-RAY DIFFRACTION D_max: 108.0 Å Quality: EXCELLENT

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

DNA repair protein XRCC1

Homo sapiens

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 monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain A； UniProt 1–155	Not recorded	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；25-30% PEG 3350, 0.2-0.3M MgCl2, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.60 Å R-free 0.237
2	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain B； UniProt 1–155	Not recorded	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；25-30% PEG 3350, 0.2-0.3M MgCl2, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.60 Å R-free 0.237
3	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain C； UniProt 1–155	Not recorded	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；25-30% PEG 3350, 0.2-0.3M MgCl2, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.60 Å R-free 0.237
4	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain D； UniProt 1–155	Not recorded	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；25-30% PEG 3350, 0.2-0.3M MgCl2, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.60 Å R-free 0.237
5	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain E； UniProt 1–155	Not recorded	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；25-30% PEG 3350, 0.2-0.3M MgCl2, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.60 Å R-free 0.237
6	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain F； UniProt 1–155	Not recorded	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；25-30% PEG 3350, 0.2-0.3M MgCl2, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.60 Å R-free 0.237
7	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain G； UniProt 1–155	Not recorded	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；25-30% PEG 3350, 0.2-0.3M MgCl2, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.60 Å R-free 0.237
8	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain H； UniProt 1–155	Not recorded	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；25-30% PEG 3350, 0.2-0.3M MgCl2, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.60 Å R-free 0.237

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.

Other PDB	Difference from Current Entry 3K77	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1CDZ BRCT DOMAIN FROM DNA-REPAIR PROTEIN XRCC1 Deposited 1999-03-04	Different construct Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 538–633（96 aa） Fragment：C-TERMINAL BRCT DOMAIN	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；pH 7.0, VAPOR DIFFUSION, HANGING DROP	Resolution 3.20 Å R-free 0.266
1XNA NMR SOLUTION STRUCTURE OF THE SINGLE-STRAND BREAK REPAIR PROTEIN XRCC1-N-TERMINAL DOMAIN Deposited 1999-02-27	Different construct Different mutation/modification Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–183（183 aa） Fragment：N-TERMINAL DOMAIN, RESIDUES 1-183. RESIDUES 152-183 ARE DISORDERED AND NOT SHOWN.	Mutation：D179E	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 6.8；298 K；Ionic strength (raw mmCIF value) 0.4；Pressure 1 NMR sample composition H2O AND D2O	Resolution not provided
1XNT NMR SOLUTION STRUCTURE OF THE SINGLE-STRAND BREAK REPAIR PROTEIN XRCC1-N-TERMINAL DOMAIN Deposited 1999-02-27	Different construct Different mutation/modification Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–183（183 aa） Fragment：N-TERMINAL DOMAIN, RESIDUES 1-183. RESIDUES 152-183 ARE DISORDERED AND NOT SHOWN.	Mutation：D179E	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 6.8；298 K；Ionic strength (raw mmCIF value) 0.4；Pressure 1 NMR sample composition H2O AND D2O	Resolution not provided
2D8M Solution structure of the first BRCT domain of DNA-repair protein XRCC1 Deposited 2005-12-06	Different construct Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 305–420（116 aa） Fragment：BRCT domain	Not recorded	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 7；293 K；Ionic strength (raw mmCIF value) 120mM；Pressure ambient NMR sample composition 0.89mM BRCT domain U-15N,13C; 20mM TrisHCl, 100mM NaCl, 1mM DTT, 0.02% NaN3; 90% H2O, 10% D2O \| 90% H2O/10% D2O	Resolution not provided
2W3O Crystal structure of the human PNKP FHA domain in complex with an XRCC1-derived phosphopeptide Deposited 2008-11-13	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 515–522（8 aa） Fragment：RESIDUES 515-522	Non-standard monomer：Yes (specific site not provided by mmCIF)	CA CALCIUM ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions pH 8.5；0.1 M TRIS-HCL PH 8.5, 0.25 M CACL2, 28% W/V PEG 4000, 0.2 M NDSB-221	Resolution 1.85 Å R-free 0.236
2W3O Crystal structure of the human PNKP FHA domain in complex with an XRCC1-derived phosphopeptide Deposited 2008-11-13	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain D 515–522（8 aa） Fragment：RESIDUES 515-522	Non-standard monomer：Yes (specific site not provided by mmCIF)	CA CALCIUM ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions pH 8.5；0.1 M TRIS-HCL PH 8.5, 0.25 M CACL2, 28% W/V PEG 4000, 0.2 M NDSB-221	Resolution 1.85 Å R-free 0.236
3K75 X-ray crystal structure of reduced XRCC1 bound to DNA pol beta catalytic domain Deposited 2009-10-12	Different construct Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 1–183（183 aa） Fragment：N-terminal domain (UNP residues 1 to 183)	Not recorded	No recorded non-water small molecule	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
3K75 X-ray crystal structure of reduced XRCC1 bound to DNA pol beta catalytic domain Deposited 2009-10-12	Different construct Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 1–183（183 aa） Fragment：N-terminal domain (UNP residues 1 to 183)	Not recorded	No recorded non-water small molecule	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
3LQC X-ray crystal structure of oxidized XRCC1 bound to DNA pol beta Palm thumb domain Deposited 2010-02-09	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 1–183（183 aa）	Not recorded	NA SODIUM ION × 1 CO3 CARBONATE ION × 1	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 2.35 Å R-free 0.250
5E6Q Importin alpha binding to XRCC1 NLS peptide Deposited 2015-10-10	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 241–276（36 aa） Fragment：UNP residues 241-276	Not recorded	SO4 SULFATE ION × 1 GOL GLYCEROL × 1 CL CHLORIDE ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；1.5M Ammonium sulfate, 0.1M bis-tris propane	Resolution 2.31 Å R-free 0.208
5W7X Crystal Structure of FHA domain of human APLF in complex with XRCC1 bisphospho peptide Deposited 2017-06-21	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain H 514–522（9 aa） Fragment：UNP residues 514-522	Non-standard monomer：Yes (specific site not provided by mmCIF)	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；0.6mM XRCC1 bisphosphopeptide 0.6mM APLF 0.5M lithium chloride 0.1M Tris 28% PEG 6000	Resolution 2.00 Å R-free 0.229
5W7X Crystal Structure of FHA domain of human APLF in complex with XRCC1 bisphospho peptide Deposited 2017-06-21	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 514–522（9 aa） Fragment：UNP residues 514-522	Non-standard monomer：Yes (specific site not provided by mmCIF)	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；0.6mM XRCC1 bisphosphopeptide 0.6mM APLF 0.5M lithium chloride 0.1M Tris 28% PEG 6000	Resolution 2.00 Å R-free 0.229
5W7X Crystal Structure of FHA domain of human APLF in complex with XRCC1 bisphospho peptide Deposited 2017-06-21	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain F 514–522（9 aa） Fragment：UNP residues 514-522	Non-standard monomer：Yes (specific site not provided by mmCIF)	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；0.6mM XRCC1 bisphosphopeptide 0.6mM APLF 0.5M lithium chloride 0.1M Tris 28% PEG 6000	Resolution 2.00 Å R-free 0.229
5W7X Crystal Structure of FHA domain of human APLF in complex with XRCC1 bisphospho peptide Deposited 2017-06-21	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 4 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain G 514–522（9 aa） Fragment：UNP residues 514-522	Non-standard monomer：Yes (specific site not provided by mmCIF)	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；0.6mM XRCC1 bisphosphopeptide 0.6mM APLF 0.5M lithium chloride 0.1M Tris 28% PEG 6000	Resolution 2.00 Å R-free 0.229
5W7Y Crystal Structure of FHA domain of human APLF in complex with XRCC1 monophosphorylated mutated peptide Deposited 2017-06-21	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain D 514–521（8 aa） Fragment：UNP residues 514-521	Mutation：S518E Non-standard monomer：Yes (specific site not provided by mmCIF)	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；0.6mM APLF 0.6mM XRCC1 peptide 0.1M Tris 30% PEG 1000	Resolution 2.10 Å R-free 0.237
5W7Y Crystal Structure of FHA domain of human APLF in complex with XRCC1 monophosphorylated mutated peptide Deposited 2017-06-21	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 514–521（8 aa） Fragment：UNP residues 514-521	Mutation：S518E Non-standard monomer：Yes (specific site not provided by mmCIF)	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；0.6mM APLF 0.6mM XRCC1 peptide 0.1M Tris 30% PEG 1000	Resolution 2.10 Å R-free 0.237

10 other PDB entries and 16 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 A； PDBConstruct 1–155； UniProt 1–155 Author chain B； PDBConstruct 1–155； UniProt 1–155 Author chain C； PDBConstruct 1–155； UniProt 1–155 Author chain D； PDBConstruct 1–155； UniProt 1–155 Author chain E； PDBConstruct 1–155； UniProt 1–155 Author chain F； PDBConstruct 1–155； UniProt 1–155 Author chain G； PDBConstruct 1–155； UniProt 1–155 Author chain H； PDBConstruct 1–155； UniProt 1–155

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

P(r) Distance Distribution P(r) Distribution

Download Download SAXS (.dat) P(r) (.pr.out) CIF

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	3k77
Deposition date deposition_date	2009-10-12
Structure title title	X-ray crystal structure of XRCC1
Keywords keywords	;xrcc1, base excision repair, scaffolding protein, DNA damage, DNA repair, Nucleus, Phosphoprotein, Polymorphism, Ubl conjugation, PROTEIN BINDING ;; PROTEIN BINDING
Experimental Method method	X-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier	34.83 Å
Radius of gyration Rg (electron density) rg_electron	33.98 Å
Forward intensity I(0) i0	293255000.00
Molecular weight molecular_weight	133020.0 kDa
Excluded volume excluded_volume	164670 Å³
Envelope volume envelope_volume	213610 Å³
Hydration-shell volume shell_volume	51543 Å³
Envelope diameter envelope_diameter	110.4 Å
Shell Rg shell_rg	41.37 Å
Envelope Rg envelope_rg	33.37 Å
Shape Rg shape_rg	33.97 Å
Total Rg total_rg	34.52 Å
Total atoms total_atoms	9355
Residues n_residues	1216
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	108.0 Å
Rg (real space) rg_real	34.65 Å
Rg uncertainty (real space) rg_real_error	0.75 Å
I(0) (real space) i0_real	2.9330e+08
I(0) uncertainty (real space) i0_real_error	4.2240e+06
Rg (reciprocal space) rg_reciprocal	34.77 Å
I(0) (reciprocal space) i0_reciprocal	293300000.0000
Solution quality estimate total_estimate	0.9034
Solution quality rating solution_quality	EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	45.6 Å
Skewness Skewness skewness	0.110
Kurtosis Kurtosis kurtosis	-0.559
Angular range angular_range	— – 0.2250 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	35530000.0000
Real-space data points n_real_points	46
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.940; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.985; Smooth: 0.935

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (2)

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7. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

Domain ID domain_id	d3k77a_
Class class	b — All beta proteins
Fold Fold fold	b.18 — Galactose-binding domain-like
Superfamily Superfamily superfamily	b.18.1 — Galactose-binding domain-like
Family Family family	b.18.1.8 — N-terminal domain of xrcc1

Domain ID domain_id	d3k77b_
Class class	b — All beta proteins
Fold Fold fold	b.18 — Galactose-binding domain-like
Superfamily Superfamily superfamily	b.18.1 — Galactose-binding domain-like
Family Family family	b.18.1.8 — N-terminal domain of xrcc1

Domain ID domain_id	d3k77c_
Class class	b — All beta proteins
Fold Fold fold	b.18 — Galactose-binding domain-like
Superfamily Superfamily superfamily	b.18.1 — Galactose-binding domain-like
Family Family family	b.18.1.8 — N-terminal domain of xrcc1

Domain ID domain_id	d3k77d_
Class class	b — All beta proteins
Fold Fold fold	b.18 — Galactose-binding domain-like
Superfamily Superfamily superfamily	b.18.1 — Galactose-binding domain-like
Family Family family	b.18.1.8 — N-terminal domain of xrcc1

Domain ID domain_id	d3k77e_
Class class	b — All beta proteins
Fold Fold fold	b.18 — Galactose-binding domain-like
Superfamily Superfamily superfamily	b.18.1 — Galactose-binding domain-like
Family Family family	b.18.1.8 — N-terminal domain of xrcc1

Domain ID domain_id	d3k77f_
Class class	b — All beta proteins
Fold Fold fold	b.18 — Galactose-binding domain-like
Superfamily Superfamily superfamily	b.18.1 — Galactose-binding domain-like
Family Family family	b.18.1.8 — N-terminal domain of xrcc1

Domain ID domain_id	d3k77g_
Class class	b — All beta proteins
Fold Fold fold	b.18 — Galactose-binding domain-like
Superfamily Superfamily superfamily	b.18.1 — Galactose-binding domain-like
Family Family family	b.18.1.8 — N-terminal domain of xrcc1

Domain ID domain_id	d3k77h_
Class class	b — All beta proteins
Fold Fold fold	b.18 — Galactose-binding domain-like
Superfamily Superfamily superfamily	b.18.1 — Galactose-binding domain-like
Family Family family	b.18.1.8 — N-terminal domain of xrcc1

CATH v4.4 (8 domains)

Domain ID domain_id	3k77A00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	260 — Galactose-binding domain-like

Domain ID domain_id	3k77B00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	260 — Galactose-binding domain-like

Domain ID domain_id	3k77C00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	260 — Galactose-binding domain-like

Domain ID domain_id	3k77D00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	260 — Galactose-binding domain-like

Domain ID domain_id	3k77E00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	260 — Galactose-binding domain-like

Domain ID domain_id	3k77F00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	260 — Galactose-binding domain-like

Domain ID domain_id	3k77G00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	260 — Galactose-binding domain-like

Domain ID domain_id	3k77H00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	260 — Galactose-binding domain-like

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8. Citations (1)

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Unit-cell length a length_a	64.451 Å
Unit-cell length b length_b	89.302 Å
Unit-cell length c length_c	93.178 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.03 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	16

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	2.597 Å
Low-resolution limit resolution_low	29.336 Å
R factor r_factor	0.2020
R_work r_work	0.2000
R_free r_free	0.2370

Description description	DNA repair protein XRCC1
Molecular weight formula_weight	17968.2 kDa
Source method src_method	man
Copy count entity_count	8

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G,H
Atom count atom_count	9492

X-ray crystal structure of XRCC1

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

DNA repair protein XRCC1

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

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

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

6. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

Entity 2 Entity 2 water

7. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)

来源生物 organism	Homo sapiens
通用名 common_name	human
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	122

fit	/app/data/saxs_computation/k7/3k77/3k77.fit
pddf	/app/data/pr_computation/k7/3k77/3k77.pr.out
profile	/app/data/saxs_computation/k7/3k77/3k77.dat