1kj3

Mhc Class I H-2Kb molecule complexed with pKB1 peptide

Method: X-RAY DIFFRACTION Dmax: 102.8 Å Quality: EXCELLENT

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

H-2KB MHC CLASS I MOLECULE ALPHA CHAIN

Mus musculus

UniProt P01901

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 H; UniProt 22–299 Fragment:EXTRACELLULAR DOMAINS (ALPHA1, ALPHA2, ALPHA3) NATURALLY PROCESSED OCTAPEPTIDE PKB1 × 1 (O08582) BETA-2 MICROGLOBULIN × 1 (P01887) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;1.5M K2HPO4/N2HPO4, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 2.30 Å R-free 0.259
2 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain I; UniProt 22–299 Fragment:EXTRACELLULAR DOMAINS (ALPHA1, ALPHA2, ALPHA3) NATURALLY PROCESSED OCTAPEPTIDE PKB1 × 1 (O08582) BETA-2 MICROGLOBULIN × 1 (P01887) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;1.5M K2HPO4/N2HPO4, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 2.30 Å R-free 0.259

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.

83 other PDB entries and 139 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name HA1B_MOUSE
Isoform
PDB entities 1
Chains and sequence ranges Author chain H; PDBConstruct 1–279; UniProt 22–299 Author chain I; PDBConstruct 1–279; UniProt 22–299

NATURALLY PROCESSED OCTAPEPTIDE PKB1

OrganismNot specified

UniProt O08582

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 P; UniProt 161–168 Not recorded H-2KB MHC CLASS I MOLECULE ALPHA CHAIN × 1 (P01901) BETA-2 MICROGLOBULIN × 1 (P01887) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;1.5M K2HPO4/N2HPO4, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 2.30 Å R-free 0.259
2 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain Q; UniProt 161–168 Not recorded H-2KB MHC CLASS I MOLECULE ALPHA CHAIN × 1 (P01901) BETA-2 MICROGLOBULIN × 1 (P01887) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;1.5M K2HPO4/N2HPO4, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 2.30 Å R-free 0.259

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.

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

View Construct and Data Evidence
UniProt name GTPB1_MOUSE
Isoform
PDB entities 2
Chains and sequence ranges Author chain P; PDBConstruct 1–8; UniProt 161–168 Author chain Q; PDBConstruct 1–8; UniProt 161–168

BETA-2 MICROGLOBULIN

Mus musculus

UniProt P01887

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 L; UniProt 21–119 Not recorded H-2KB MHC CLASS I MOLECULE ALPHA CHAIN × 1 (P01901) NATURALLY PROCESSED OCTAPEPTIDE PKB1 × 1 (O08582) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;1.5M K2HPO4/N2HPO4, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 2.30 Å R-free 0.259
2 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain M; UniProt 21–119 Not recorded H-2KB MHC CLASS I MOLECULE ALPHA CHAIN × 1 (P01901) NATURALLY PROCESSED OCTAPEPTIDE PKB1 × 1 (O08582) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;1.5M K2HPO4/N2HPO4, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 2.30 Å R-free 0.259

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.

290 other PDB entries and 482 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name B2MG_MOUSE
Isoform
PDB entities 3
Chains and sequence ranges Author chain L; PDBConstruct 1–99; UniProt 21–119 Author chain M; PDBConstruct 1–99; UniProt 21–119

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 1kj3

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1kj3
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1kj3
Deposition date deposition_date2001-12-04
Structure title titleMhc Class I H-2Kb molecule complexed with pKB1 peptide
Keywords keywordsMHC CLASS I, H-2KB, PMHC COMPLEX, ALLOGENEIC, 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_guinier34.00
Radius of gyration Rg (electron density) rg_electron33.29
Forward intensity I(0) i0129098000.00
Molecular weight molecular_weight89408.0 kDa
Excluded volume excluded_volume111250 ų
Envelope volume envelope_volume153310 ų
Hydration-shell volume shell_volume38178 ų
Envelope diameter envelope_diameter109.3
Shell Rg shell_rg40.73
Envelope Rg envelope_rg32.12
Shape Rg shape_rg33.28
Total Rg total_rg33.92
Total atoms total_atoms6306
Residues n_residues771
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 dmax102.8
Rg (real space) rg_real33.88
Rg uncertainty (real space) rg_real_error0.59
I(0) (real space) i0_real1.2910e+08
I(0) uncertainty (real space) i0_real_error1.8570e+06
Rg (reciprocal space) rg_reciprocal33.96
I(0) (reciprocal space) i0_reciprocal129100000.0000
Solution quality estimate total_estimate0.9100
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary45.9
Skewness Skewness skewness0.079
Kurtosis Kurtosis kurtosis-0.690
Angular range angular_range— – 0.2350 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha12610000.0000
Real-space data points n_real_points48
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.983; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.879

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 13 domains

SCOP 2.08 (7 domains)

Domain ID domain_idd1kj3h1
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.2 — C1 set domains (antibody constant domain-like)
Domain ID domain_idd1kj3h2
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.19 — MHC antigen-recognition domain
Superfamily Superfamily superfamilyd.19.1 — MHC antigen-recognition domain
Family Family familyd.19.1.1 — MHC antigen-recognition domain
Domain ID domain_idd1kj3h3
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd1kj3i1
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.2 — C1 set domains (antibody constant domain-like)
Domain ID domain_idd1kj3i2
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.19 — MHC antigen-recognition domain
Superfamily Superfamily superfamilyd.19.1 — MHC antigen-recognition domain
Family Family familyd.19.1.1 — MHC antigen-recognition domain
Domain ID domain_idd1kj3l_
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.2 — C1 set domains (antibody constant domain-like)
Domain ID domain_idd1kj3m_
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.2 — C1 set domains (antibody constant domain-like)

CATH v4.4 (6 domains)

Domain ID domain_id1kj3H01
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_id1kj3H02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id1kj3I01
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_id1kj3I02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id1kj3L00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id1kj3M00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins

8. Citations (3)

9. Files and Curves (10)