8vrw

Cryo-EM structure of human invariant chain in complex with HLA-DR15

Method: ELECTRON MICROSCOPY Dmax: 109.0 Å Quality: REASONABLE

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

HLA class II histocompatibility antigen, DR alpha chain

Homo sapiens

UniProt P01903

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 × 9 PDB declaration: nonameric(9) Consistent with protein copy count Chain A; UniProt 1–254 Chain D; UniProt 1–254 Chain G; UniProt 1–254 Not recorded HLA class II histocompatibility antigen, DRB1 beta chain × 3 (P01911) HLA class II histocompatibility antigen gamma chain × 3 (P04233) ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.03 Å

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.

139 other PDB entries and 219 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name DRA_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–254; UniProt 1–254 Author chain D; PDBConstruct 1–254; UniProt 1–254 Author chain G; PDBConstruct 1–254; UniProt 1–254

HLA class II histocompatibility antigen, DRB1 beta chain

Homo sapiens

UniProt P01911

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 × 9 PDB declaration: nonameric(9) Consistent with protein copy count Chain B; UniProt 1–266 Chain E; UniProt 1–266 Chain H; UniProt 1–266 Not recorded HLA class II histocompatibility antigen, DR alpha chain × 3 (P01903) HLA class II histocompatibility antigen gamma chain × 3 (P04233) ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.03 Å

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.

9 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name DRB1_HUMAN
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–266; UniProt 1–266 Author chain E; PDBConstruct 1–266; UniProt 1–266 Author chain H; PDBConstruct 1–266; UniProt 1–266

HLA class II histocompatibility antigen gamma chain

Homo sapiens

UniProt P04233

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 × 9 PDB declaration: nonameric(9) Consistent with protein copy count Chain C; UniProt 2–296 Chain F; UniProt 2–296 Chain I; UniProt 2–296 Not recorded HLA class II histocompatibility antigen, DR alpha chain × 3 (P01903) HLA class II histocompatibility antigen, DRB1 beta chain × 3 (P01911) ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.03 Å

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.

17 other PDB entries and 24 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name HG2A_HUMAN
Isoform
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 14–308; UniProt 2–296 Author chain F; PDBConstruct 14–308; UniProt 2–296 Author chain I; PDBConstruct 14–308; UniProt 2–296

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 8vrw

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8vrw
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8vrw
Deposition date deposition_date2024-01-22
Structure title titleCryo-EM structure of human invariant chain in complex with HLA-DR15
Keywords keywordsAntigen presentation, membrane protein, trimeric complex, IMMUNE SYSTEM; IMMUNE SYSTEM
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier35.91
Radius of gyration Rg (electron density) rg_electron34.84
Forward intensity I(0) i0327856000.00
Molecular weight molecular_weight147410.0 kDa
Excluded volume excluded_volume184740 ų
Envelope volume envelope_volume244870 ų
Hydration-shell volume shell_volume56844 ų
Envelope diameter envelope_diameter112.0
Shell Rg shell_rg42.78
Envelope Rg envelope_rg34.56
Shape Rg shape_rg34.83
Total Rg total_rg35.44
Total atoms total_atoms10413
Residues n_residues1272
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 dmax109.0
Rg (real space) rg_real35.65
Rg uncertainty (real space) rg_real_error0.57
I(0) (real space) i0_real3.2790e+08
I(0) uncertainty (real space) i0_real_error4.8630e+06
Rg (reciprocal space) rg_reciprocal35.81
I(0) (reciprocal space) i0_reciprocal327900000.0000
Solution quality estimate total_estimate0.6912
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary47.1
Skewness Skewness skewness0.038
Kurtosis Kurtosis kurtosis-0.533
Angular range angular_range— – 0.2200 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha33800000.0000
Real-space data points n_real_points45
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.931; Stabil: 1.000; Sysdev: 0.101; Positv: 1.000; Valcen: 0.973; Smooth: 0.914

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

8. Citations (1)

9. Files and Curves (10)