1ci4

THE CRYSTAL STRUCTURE OF HUMAN BARRIER-TO-AUTOINTEGRATION FACTOR (BAF)

Method: X-RAY DIFFRACTION Dmax: 55.9 Å Quality: EXCELLENT

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

PROTEIN (BARRIER-TO-AUTOINTEGRATION FACTOR (BAF))

Homo sapiens

UniProt O75531

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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 1–89 Chain B; UniProt 1–89 Non-standard monomer:Yes (specific site not provided by mmCIF) No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:pH 6.5;DIALYSIS OF PROTEIN AT 8.3 MG/ML IN 20MM TRIS HCL AT PH7.0, 10%(W/V) GLYCEROL, 150MM NACL, 10MM DTT, AND 0.1MM EDTA AGAINST 20MM IMIDAZOLE AT PH 6.5, 80MM NACL, AND 10MM DTT. DIALYSIS DONE AT ROOM TEMPERATURE.(ALL CONCENTRATIONS ARE IN MILLI-MOLAR) Resolution 1.90 Å R-free 0.262

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.

27 other PDB entries and 29 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name BAF_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–89; UniProt 1–89 Author chain B; PDBConstruct 1–89; UniProt 1–89

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 1ci4

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1ci4
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id1ci4
Deposition date deposition_date1999-04-07
Structure title titleTHE CRYSTAL STRUCTURE OF HUMAN BARRIER-TO-AUTOINTEGRATION FACTOR (BAF)
Keywords keywordsDNA BINDING PROTEIN, RETROVIRAL INTEGRATION, PREINTEGRATION COMPLEX; DNA BINDING PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier17.58
Radius of gyration Rg (electron density) rg_electron16.25
Forward intensity I(0) i07513820.00
Molecular weight molecular_weight19934.0 kDa
Excluded volume excluded_volume24783 ų
Envelope volume envelope_volume27387 ų
Hydration-shell volume shell_volume14459 ų
Envelope diameter envelope_diameter54.4
Shell Rg shell_rg21.97
Envelope Rg envelope_rg16.58
Shape Rg shape_rg16.21
Total Rg total_rg17.31
Total atoms total_atoms1389
Residues n_residues174
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 dmax55.9
Rg (real space) rg_real17.53
Rg uncertainty (real space) rg_real_error0.29
I(0) (real space) i0_real7.5140e+06
I(0) uncertainty (real space) i0_real_error8.4240e+04
Rg (reciprocal space) rg_reciprocal17.54
I(0) (reciprocal space) i0_reciprocal7514000.0000
Solution quality estimate total_estimate0.9032
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary20.1
Skewness Skewness skewness0.255
Kurtosis Kurtosis kurtosis-0.454
Angular range angular_range— – 0.4550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha1515000.0000
Real-space data points n_real_points76
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.914; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.996; Smooth: 0.999

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1ci4a_
Class classa — All alpha proteins
Fold Fold folda.60 — SAM domain-like
Superfamily Superfamily superfamilya.60.5 — Barrier-to-autointegration factor, BAF
Family Family familya.60.5.1 — Barrier-to-autointegration factor, BAF
Domain ID domain_idd1ci4b_
Class classa — All alpha proteins
Fold Fold folda.60 — SAM domain-like
Superfamily Superfamily superfamilya.60.5 — Barrier-to-autointegration factor, BAF
Family Family familya.60.5.1 — Barrier-to-autointegration factor, BAF

CATH v4.4 (2 domains)

Domain ID domain_id1ci4A00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily40 — Barrier-to-autointegration factor, BAF
Domain ID domain_id1ci4B00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily40 — Barrier-to-autointegration factor, BAF

8. Citations (3)

9. Files and Curves (10)