SAXSdb — 1nfk

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

PROTEIN (NUCLEAR FACTOR KAPPA-B (NF-KB))

OrganismNot specified

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 Homooligomer Protein × 2 DNA 2 PDB declaration: tetrameric（4） Consistent with all polymer counts	Chain A； UniProt 39–363 Chain B； UniProt 39–363	Not recorded	;DNA (5'-D(TPGPGPGPAPAPTPTPCPCP*C)-3') ; × 2	X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions	Resolution 2.30 Å R-free 0.340

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 1NFK	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1BFS STRUCTURE OF NF-KB P50 HOMODIMER BOUND TO A KB SITE Deposited 1997-09-12	Different construct Different mutation/modification Different oligomeric state Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 245–350（106 aa） Fragment：DIMERIZATION DOMAIN	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.20 Å R-free 0.287
1IKN IKAPPABALPHA/NF-KAPPAB COMPLEX Deposited 1998-11-13	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 245–363（119 aa） Fragment：N-TERMINAL AND DIMERIZATION DOMAINS	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 7；pH 7.00	Resolution 2.30 Å R-free 0.277
1LE5 Crystal structure of a NF-kB heterodimer bound to an IFNb-kB Deposited 2002-04-09	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Heteromer；Protein × 2 PDB declaration: tetrameric	Chain B 39–350（312 aa） Fragment：p50 RHR	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；291 K；50 mM Na acatate, 50mM CaCl2, 1.0 mM Na spermine, 8% PEG 3350, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 2.75 Å R-free 0.293
1LE5 Crystal structure of a NF-kB heterodimer bound to an IFNb-kB Deposited 2002-04-09	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein–DNA Heteromer；Protein × 2 PDB declaration: tetrameric	Chain F 39–350（312 aa） Fragment：p50 RHR	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；291 K；50 mM Na acatate, 50mM CaCl2, 1.0 mM Na spermine, 8% PEG 3350, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 2.75 Å R-free 0.293
1LE9 Crystal structure of a NF-kB heterodimer bound to the Ig/HIV-kB siti Deposited 2002-04-09	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Heteromer；Protein × 2 PDB declaration: tetrameric	Chain B 39–350（312 aa） Fragment：p50 RHR	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；PEG 3350, CaCl2, Na acetate, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 110K	Resolution 3.00 Å R-free 0.305
1LE9 Crystal structure of a NF-kB heterodimer bound to the Ig/HIV-kB siti Deposited 2002-04-09	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein–DNA Heteromer；Protein × 2 PDB declaration: tetrameric	Chain F 39–350（312 aa） Fragment：p50 RHR	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；PEG 3350, CaCl2, Na acetate, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 110K	Resolution 3.00 Å R-free 0.305
1LEI The kB DNA sequence from the HLV-LTR functions as an allosteric regulator of HIV transcription Deposited 2002-04-09	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Heteromer；Protein × 2 PDB declaration: tetrameric	Chain B 39–350（312 aa） Fragment：p50 RHR	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions SMALL TUBES；pH 6.5；291 K；PEG 3350, CaCl2, sodium spermine, pH 6.5, SMALL TUBES, temperature 291K	Resolution 2.70 Å R-free 0.284
1OOA CRYSTAL STRUCTURE OF NF-kB(p50)2 COMPLEXED TO A HIGH-AFFINITY RNA APTAMER Deposited 2003-03-03	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–RNA Monomer；Protein × 1 PDB declaration: dimeric	Chain A 39–363（325 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；291 K；PEG 8000, ethylene glycol, ammonium sulfate, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 2.45 Å R-free 0.248
1OOA CRYSTAL STRUCTURE OF NF-kB(p50)2 COMPLEXED TO A HIGH-AFFINITY RNA APTAMER Deposited 2003-03-03	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein–RNA Monomer；Protein × 1 PDB declaration: dimeric	Chain B 39–363（325 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；291 K；PEG 8000, ethylene glycol, ammonium sulfate, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 2.45 Å R-free 0.248
1U36 Crystal structure of WLAC mutant of dimerisation domain of NF-kB p50 transcription factor Deposited 2004-07-21	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 245–350（106 aa） Fragment：dimerization domain	Mutation：Y267W, V310C	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；292 K；PEG 8000, ammonium sulphate, cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 292K	Resolution 1.89 Å R-free 0.220
1U3J Crystal structure of MLAV mutant of dimerisation domain of NF-kB p50 transcription factor Deposited 2004-07-22	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 245–350（106 aa） Fragment：dimerization domain	Mutation：Y267M	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；292 K；PEG 8000, ammonium sulphate, cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 292K	Resolution 1.90 Å R-free 0.222
1U3Y Crystal structure of ILAC mutant of dimerisation domain of NF-kB p50 transcription factor Deposited 2004-07-22	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 245–350（106 aa） Fragment：dimerization domain	Mutation：Y267I, V310C	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；292 K；PEG 8000, ammonium sulphate, cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 292K	Resolution 1.90 Å R-free 0.223
1U3Z Crystal structure of MLAC mutant of dimerisation domain of NF-kB p50 transcription factor Deposited 2004-07-23	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 245–350（106 aa） Fragment：dimerization domain	Mutation：Y267M, V310C	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；292 K；PEG 8000, ammonium sulphate, cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 292K	Resolution 1.90 Å R-free 0.235
1U41 Crystal structure of YLGV mutant of dimerisation domain of NF-kB p50 transcription factor Deposited 2004-07-23	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 245–350（106 aa） Fragment：dimerization domain Chain B 245–350（106 aa） Fragment：dimerization domain	Mutation：A308G Mutation：A308G	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；292 K；PEG 8000, ammonium sulphate, cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 292K	Resolution 2.20 Å R-free 0.235
1U41 Crystal structure of YLGV mutant of dimerisation domain of NF-kB p50 transcription factor Deposited 2004-07-23	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain C 245–350（106 aa） Fragment：dimerization domain Chain D 245–350（106 aa） Fragment：dimerization domain	Mutation：A308G Mutation：A308G	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；292 K；PEG 8000, ammonium sulphate, cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 292K	Resolution 2.20 Å R-free 0.235
1U42 Crystal structure of MLAM mutant of dimerisation domain of NF-kB p50 transcription factor Deposited 2004-07-23	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 245–350（106 aa） Fragment：dimerization domain	Mutation：Y267M, V310M	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；292 K；PEG 8000, ammonium sulphate, cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 292K	Resolution 2.70 Å R-free 0.317
1VKX CRYSTAL STRUCTURE OF THE NFKB P50/P65 HETERODIMER COMPLEXED TO THE IMMUNOGLOBULIN KB DNA Deposited 1997-09-17	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Heteromer；Protein × 2 PDB declaration: tetrameric	Chain B 39–350（312 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；pH 5.50, VAPOR DIFFUSION, HANGING DROP	Resolution 2.90 Å R-free 0.320
2I9T Structure of NF-kB p65-p50 heterodimer bound to PRDII element of B-interferon promoter Deposited 2006-09-06	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Heteromer；Protein × 2 PDB declaration: tetrameric	Chain B 39–350（312 aa） Fragment：residues 39-350	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 5.6；293 K；8% PEG 5K monomethylether, 200mM sodium acetate, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 293K, pH 5.60	Resolution 2.80 Å R-free 0.288
2V2T X-ray structure of a NF-kB p50-RelB-DNA complex Deposited 2007-06-07	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Heteromer；Protein × 2 PDB declaration: tetrameric	Chain B 38–363（326 aa） Fragment：NUCLEAR FACTOR NF-KAPPA-B P50 SUBUNIT, RESIDUES 38-363	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 7；5% PEG3350 100 MM NACITRATE 1MM SPERMINE 5MM DTT, pH 7	Resolution 3.05 Å R-free 0.276
3JV4 Crystal structure of the dimerization domains p50 and RelB Deposited 2009-09-15	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 B 245–359（115 aa） Fragment：dimerization domain (UNP residues 245-359)	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；291 K；PEG8000, ammonium sulfate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 3.15 Å R-free 0.280
3JV4 Crystal structure of the dimerization domains p50 and RelB Deposited 2009-09-15	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 D 245–359（115 aa） Fragment：dimerization domain (UNP residues 245-359)	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；291 K；PEG8000, ammonium sulfate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 3.15 Å R-free 0.280
3JV4 Crystal structure of the dimerization domains p50 and RelB Deposited 2009-09-15	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 245–359（115 aa） Fragment：dimerization domain (UNP residues 245-359)	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；291 K；PEG8000, ammonium sulfate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 3.15 Å R-free 0.280
8TKL Murine NF-kappaB p50 Rel Homology Region homodimer in complex with a Test 16-mer kappaB-like DNA Deposited 2023-07-25	Different construct Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 39–350（312 aa） Chain B 39–350（312 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；293.15 K；4% Tacsimate pH 6.0, 12% PEG 3350	Resolution 3.00 Å R-free 0.284
8TKM Murine NF-kappaB p50 Rel Homology Region homodimer in complex with 17-mer kappaB DNA from human interleukin-6 (IL-6) promoter Deposited 2023-07-25	Different construct Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric	Chain A 39–350（312 aa） Chain B 39–350（312 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；298 K；0.1 M Na-Acetate pH 4.9, 16% (w/v) PEG 1500	Resolution 2.80 Å R-free 0.273
8TKN Murine NF-kappaB p50 Rel Homology Region homodimer in complex with 10-mer kappaB DNA from human Neutrophil Gelatinase-associated Lipocalin (NGAL) promoter Deposited 2023-07-25	Different construct Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: hexameric	Chain A 39–350（312 aa） Chain B 39–350（312 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.4；298 K；0.05 M sodium acetate pH 5.4, 20 mM magnesium sulfate, and 4% PEG 3350	Resolution 2.80 Å R-free 0.288
9BOR IkappaBzeta ankyrin repeat domain:NF-kappaB p50 homodimer complex at 2.0 Angstrom resolution Deposited 2024-05-05	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain B 245–376（132 aa） Chain C 245–376（132 aa）	Not recorded	HT3 (2R,3S)-heptane-1,2,3-triol × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；303 K；20mM acetic acid pH 5.2, 80mM acetic acid pH 5.8, 5.5% PEG 3350, 10mM DTT, 0.5% 1,2,3 heptanetriol	Resolution 2.00 Å R-free 0.208

20 other PDB entries and 26 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	NFKB1_MOUSE
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain A； PDBConstruct 1–325； UniProt 39–363 Author chain B； PDBConstruct 1–325； UniProt 39–363

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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	1nfk
Deposition date deposition_date	1995-02-28
Structure title title	STRUCTURE OF THE NUCLEAR FACTOR KAPPA-B (NF-KB) P50 HOMODIMER
Keywords keywords	NF-KB P50, COMPLEX (TRANSCRIPTION FACTOR-DNA), TRANSCRIPTION-DNA COMPLEX; TRANSCRIPTION/DNA
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	31.47 Å
Radius of gyration Rg (electron density) rg_electron	31.87 Å
Forward intensity I(0) i0	102944000.00
Molecular weight molecular_weight	76405.0 kDa
Excluded volume excluded_volume	93915 Å³
Envelope volume envelope_volume	122650 Å³
Hydration-shell volume shell_volume	33556 Å³
Envelope diameter envelope_diameter	107.6 Å
Shell Rg shell_rg	36.87 Å
Envelope Rg envelope_rg	31.98 Å
Shape Rg shape_rg	31.90 Å
Total Rg total_rg	32.18 Å
Total atoms total_atoms	6526
Residues n_residues	646
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	104.5 Å
Rg (real space) rg_real	31.52 Å
Rg uncertainty (real space) rg_real_error	1.14 Å
I(0) (real space) i0_real	1.0290e+08
I(0) uncertainty (real space) i0_real_error	1.6060e+06
Rg (reciprocal space) rg_reciprocal	31.50 Å
I(0) (reciprocal space) i0_reciprocal	102900000.0000
Solution quality estimate total_estimate	0.8920
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	0
Primary peak position r_peak_primary	— Å
Skewness Skewness skewness	0.339
Kurtosis Kurtosis kurtosis	-0.456
Angular range angular_range	— – 0.2500 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	16630000.0000
Real-space data points n_real_points	51
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.903; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.970; Smooth: 0.913

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	;DNA (5'-D(TPGPGPGPAPAPTPTPCPCP*C)-3') ;
Molecular weight formula_weight	3349.2 kDa
Source method src_method	syn
Copy count entity_count	2

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	C,D
Atom count atom_count	7477

TGGGAATTCCC

Entity 2 Entity 2 polymer

Description description	PROTEIN (NUCLEAR FACTOR KAPPA-B (NF-KB))
Molecular weight formula_weight	36597.8 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B

GPYLQILEQPKQRGFRFRYVCEGPSHGGLPGASSEKNKKSYPQVKICNYVGPAKVIVQLVTNGKNIHLHAHSLVGKHCEDGVCTVTAGPKDMVVGFANLGILHVTKKKVFETLEARMTEACIRGYNPGLLVHSDLAYLQAEGGGDRQLTDREKEIIRQAAVQQTKEMDLSVVRLMFTAFLPDSTGSFTRRLEPVVSDAIYDSKAPNASNLKIVRMDRTAGCVTGGEEIYLLCDKVQKDDIQIRFYEEEENGGVWEGFGDFSPTDVHRQFAIVFKTPKYKDVNITKPASVFVQLRRKSDLETSEPKPFLYYPEIKDKEEVQRKRQK

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	317

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7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1nfka1
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.18 — E set domains
Family Family family	b.1.18.1 — NF-kappa-B/REL/DORSAL transcription factors, C-terminal domain

Domain ID domain_id	d1nfka2
Class class	b — All beta proteins
Fold Fold fold	b.2 — Common fold of diphtheria toxin/transcription factors/cytochrome f
Superfamily Superfamily superfamily	b.2.5 — p53-like transcription factors
Family Family family	b.2.5.3 — Rel/Dorsal transcription factors, DNA-binding domain

Domain ID domain_id	d1nfkb1
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.18 — E set domains
Family Family family	b.1.18.1 — NF-kappa-B/REL/DORSAL transcription factors, C-terminal domain

Domain ID domain_id	d1nfkb2
Class class	b — All beta proteins
Fold Fold fold	b.2 — Common fold of diphtheria toxin/transcription factors/cytochrome f
Superfamily Superfamily superfamily	b.2.5 — p53-like transcription factors
Family Family family	b.2.5.3 — Rel/Dorsal transcription factors, DNA-binding domain

CATH v4.4 (4 domains)

Domain ID domain_id	1nfkA01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	340 — Rel homology domain (RHD), DNA-binding domain

Domain ID domain_id	1nfkA02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	1nfkB01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	340 — Rel homology domain (RHD), DNA-binding domain

Domain ID domain_id	1nfkB02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

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8. Citations (1)

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Unit-cell length a length_a	84.200 Å
Unit-cell length b length_b	132.100 Å
Unit-cell length c length_c	80.100 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	93.10 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	2.300 Å
Low-resolution limit resolution_low	6.000 Å
R factor r_factor	0.2300
R_work r_work	0.2300
R_free r_free	0.3400

fit	/app/data/saxs_computation/nf/1nfk/1nfk.fit
pddf	/app/data/pr_computation/nf/1nfk/1nfk.pr.out
profile	/app/data/saxs_computation/nf/1nfk/1nfk.dat

STRUCTURE OF THE NUCLEAR FACTOR KAPPA-B (NF-KB) P50 HOMODIMER

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

PROTEIN (NUCLEAR FACTOR KAPPA-B (NF-KB))

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

6. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 water

7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)