4o2c

An Nt-acetylated peptide complexed with HLA-B*3901

Method: X-RAY DIFFRACTION Dmax: 75.0 Å Quality: EXCELLENT

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

HLA class I histocompatibility antigen, B-39 alpha chain

Homo sapiens

UniProt P30475

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 × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain A; UniProt 25–298 Fragment:UNP residues 25-298 Beta-2-microglobulin × 1 (P61769) Peptide from ATP-dependent RNA helicase DDX3X × 1 (O00571) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;277 K;0.1M ammonium acetate, 0.1M Bis-Tris (pH 6.5), 17% (w/v) PEG 10000, VAPOR DIFFUSION, HANGING DROP, temperature 277K Resolution 1.80 Å R-free 0.202

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.

2 other PDB entries and 4 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name 1B39_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–274; UniProt 25–298

Beta-2-microglobulin

Homo sapiens

UniProt P61769

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 × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain B; UniProt 21–119 Not recorded HLA class I histocompatibility antigen, B-39 alpha chain × 1 (P30475) Peptide from ATP-dependent RNA helicase DDX3X × 1 (O00571) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;277 K;0.1M ammonium acetate, 0.1M Bis-Tris (pH 6.5), 17% (w/v) PEG 10000, VAPOR DIFFUSION, HANGING DROP, temperature 277K Resolution 1.80 Å R-free 0.202

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.

1313 other PDB entries and 1998 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name B2MG_HUMAN
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–99; UniProt 21–119

Peptide from ATP-dependent RNA helicase DDX3X

OrganismNot specified

UniProt O00571

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 × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain C; UniProt 2–10 Non-standard monomer:Yes (specific site not provided by mmCIF) HLA class I histocompatibility antigen, B-39 alpha chain × 1 (P30475) Beta-2-microglobulin × 1 (P61769) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;277 K;0.1M ammonium acetate, 0.1M Bis-Tris (pH 6.5), 17% (w/v) PEG 10000, VAPOR DIFFUSION, HANGING DROP, temperature 277K Resolution 1.80 Å R-free 0.202

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.

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

View Construct and Data Evidence
UniProt name DDX3X_HUMAN
Isoform
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 2–10; UniProt 2–10

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 4o2c

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4o2c
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id4o2c
Deposition date deposition_date2013-12-17
Structure title titleAn Nt-acetylated peptide complexed with HLA-B*3901
Keywords keywordsIg-like, IMMUNE SYSTEM; IMMUNE SYSTEM
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier24.01
Radius of gyration Rg (electron density) rg_electron22.87
Forward intensity I(0) i036322600.00
Molecular weight molecular_weight44358.0 kDa
Excluded volume excluded_volume54588 ų
Envelope volume envelope_volume66805 ų
Hydration-shell volume shell_volume24468 ų
Envelope diameter envelope_diameter79.2
Shell Rg shell_rg29.64
Envelope Rg envelope_rg22.95
Shape Rg shape_rg22.86
Total Rg total_rg23.73
Total atoms total_atoms3134
Residues n_residues382
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 dmax75.0
Rg (real space) rg_real23.95
Rg uncertainty (real space) rg_real_error0.51
I(0) (real space) i0_real3.6320e+07
I(0) uncertainty (real space) i0_real_error4.2930e+05
Rg (reciprocal space) rg_reciprocal23.96
I(0) (reciprocal space) i0_reciprocal36320000.0000
Solution quality estimate total_estimate0.9109
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary29.3
Skewness Skewness skewness0.241
Kurtosis Kurtosis kurtosis-0.479
Angular range angular_range— – 0.3300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha7359000.0000
Real-space data points n_real_points65
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.948; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.995

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 3 domains

CATH v4.4 (3 domains)

Domain ID domain_id4o2cA01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology500 — Murine Class I Major Histocompatibility Complex, H2-DB; Chain A, domain 1
Homologous superfamily homologous superfamily10 — MHC class I-like antigen recognition-like
Domain ID domain_id4o2cA02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id4o2cB00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins

8. Citations (1)

9. Files and Curves (10)