1fv1

STRUCTURAL BASIS FOR THE BINDING OF AN IMMUNODOMINANT PEPTIDE FROM MYELIN BASIC PROTEIN IN DIFFERENT REGISTERS BY TWO HLA-DR2 ALLELES

Method: X-RAY DIFFRACTION Dmax: 99.9 Å Quality: GOOD

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

MAJOR HISTOCOMPATIBILITY COMPLEX 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 × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain A; UniProt 26–206 Not recorded MAJOR HISTOCOMPATIBILITY COMPLEX BETA CHAIN × 1 (Q30154) MYELIN BASIC PROTEIN × 1 (P02686) SO4 SULFATE ION × 2 GOL GLYCEROL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:EVAPORATION;pH 6.5;298 K;2/3 dilution of 30% PEG 8000, 0.1M sodium cacodylate, pH6.5, 0.2M ammonium sulfate, EVAPORATION, temperature 298.0K Resolution 1.90 Å R-free 0.267
2 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain D; UniProt 26–206 Not recorded MAJOR HISTOCOMPATIBILITY COMPLEX BETA CHAIN × 1 (Q30154) MYELIN BASIC PROTEIN × 1 (P02686) SO4 SULFATE ION × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:EVAPORATION;pH 6.5;298 K;2/3 dilution of 30% PEG 8000, 0.1M sodium cacodylate, pH6.5, 0.2M ammonium sulfate, EVAPORATION, temperature 298.0K Resolution 1.90 Å R-free 0.267

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 218 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name 2DRA_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–181; UniProt 26–206 Author chain D; PDBConstruct 1–181; UniProt 26–206

MAJOR HISTOCOMPATIBILITY COMPLEX BETA CHAIN

Homo sapiens

UniProt Q30154

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 30–219 Not recorded MAJOR HISTOCOMPATIBILITY COMPLEX ALPHA CHAIN × 1 (P01903) MYELIN BASIC PROTEIN × 1 (P02686) SO4 SULFATE ION × 2 GOL GLYCEROL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:EVAPORATION;pH 6.5;298 K;2/3 dilution of 30% PEG 8000, 0.1M sodium cacodylate, pH6.5, 0.2M ammonium sulfate, EVAPORATION, temperature 298.0K Resolution 1.90 Å R-free 0.267
2 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain E; UniProt 30–219 Not recorded MAJOR HISTOCOMPATIBILITY COMPLEX ALPHA CHAIN × 1 (P01903) MYELIN BASIC PROTEIN × 1 (P02686) SO4 SULFATE ION × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:EVAPORATION;pH 6.5;298 K;2/3 dilution of 30% PEG 8000, 0.1M sodium cacodylate, pH6.5, 0.2M ammonium sulfate, EVAPORATION, temperature 298.0K Resolution 1.90 Å R-free 0.267

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.

No other PDB entry for the same UniProt protein was found.

View Construct and Data Evidence
UniProt name Q30154_HUMAN
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–190; UniProt 30–219 Author chain E; PDBConstruct 1–190; UniProt 30–219

MYELIN BASIC PROTEIN

OrganismNot specified

UniProt P02686

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 218–237 Fragment:RESIDUES 86-105 MAJOR HISTOCOMPATIBILITY COMPLEX ALPHA CHAIN × 1 (P01903) MAJOR HISTOCOMPATIBILITY COMPLEX BETA CHAIN × 1 (Q30154) SO4 SULFATE ION × 2 GOL GLYCEROL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:EVAPORATION;pH 6.5;298 K;2/3 dilution of 30% PEG 8000, 0.1M sodium cacodylate, pH6.5, 0.2M ammonium sulfate, EVAPORATION, temperature 298.0K Resolution 1.90 Å R-free 0.267
2 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain F; UniProt 218–237 Fragment:RESIDUES 86-105 MAJOR HISTOCOMPATIBILITY COMPLEX ALPHA CHAIN × 1 (P01903) MAJOR HISTOCOMPATIBILITY COMPLEX BETA CHAIN × 1 (Q30154) SO4 SULFATE ION × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:EVAPORATION;pH 6.5;298 K;2/3 dilution of 30% PEG 8000, 0.1M sodium cacodylate, pH6.5, 0.2M ammonium sulfate, EVAPORATION, temperature 298.0K Resolution 1.90 Å R-free 0.267

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 2 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name MBP_HUMAN
Isoform
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 1–20; UniProt 218–237 Author chain F; PDBConstruct 1–20; UniProt 218–237

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 1fv1

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1fv1
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1fv1
Deposition date deposition_date2000-09-18
Structure title titleSTRUCTURAL BASIS FOR THE BINDING OF AN IMMUNODOMINANT PEPTIDE FROM MYELIN BASIC PROTEIN IN DIFFERENT REGISTERS BY TWO HLA-DR2 ALLELES
Keywords keywordsMHC class II DR2a, 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_guinier30.83
Radius of gyration Rg (electron density) rg_electron30.23
Forward intensity I(0) i0127236000.00
Molecular weight molecular_weight88691.0 kDa
Excluded volume excluded_volume110430 ų
Envelope volume envelope_volume144770 ų
Hydration-shell volume shell_volume40120 ų
Envelope diameter envelope_diameter105.3
Shell Rg shell_rg37.37
Envelope Rg envelope_rg30.17
Shape Rg shape_rg30.20
Total Rg total_rg30.96
Total atoms total_atoms6275
Residues n_residues775
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 dmax99.9
Rg (real space) rg_real30.80
Rg uncertainty (real space) rg_real_error0.75
I(0) (real space) i0_real1.2720e+08
I(0) uncertainty (real space) i0_real_error2.2180e+06
Rg (reciprocal space) rg_reciprocal30.81
I(0) (reciprocal space) i0_reciprocal127200000.0000
Solution quality estimate total_estimate0.8846
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary37.2
Skewness Skewness skewness0.346
Kurtosis Kurtosis kurtosis-0.225
Angular range angular_range— – 0.2550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha14730000.0000
Real-space data points n_real_points52
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.888; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.998; Smooth: 0.835

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

Domain ID domain_idd1fv1a1
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_idd1fv1a2
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_idd1fv1b1
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_idd1fv1b2
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_idd1fv1d1
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_idd1fv1d2
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_idd1fv1e1
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_idd1fv1e2
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

CATH v4.4 (8 domains)

Domain ID domain_id1fv1A01
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology320 — Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1
Homologous superfamily homologous superfamily10 — Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1
Domain ID domain_id1fv1A02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id1fv1B01
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology320 — Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1
Homologous superfamily homologous superfamily10 — Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1
Domain ID domain_id1fv1B02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id1fv1D01
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology320 — Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1
Homologous superfamily homologous superfamily10 — Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1
Domain ID domain_id1fv1D02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id1fv1E01
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology320 — Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1
Homologous superfamily homologous superfamily10 — Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1
Domain ID domain_id1fv1E02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins

8. Citations (1)

9. Files and Curves (10)