← Back to search

Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：P01854 New Search
34PDB entries
52Biological assembly
102chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
1F6A Structure of the human ige-fc bound to its high affinity receptor fc(epsilon)ri(alpha) Deposited 2000-06-20 Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 211–428（218 aa） Fragment：C(EPSILON)3-C(EPSILON)4 DOMAINS
Chain D 211–428（218 aa） Fragment：C(EPSILON)3-C(EPSILON)4 DOMAINS
Not recorded SO4 SULFATE ION × 5 CPS 3-[(3-CHOLAMIDOPROPYL)DIMETHYLAMMONIO]-1-PROPANESULFONATE × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；296 K；Ammonium Sulfate, Tris, CHAPS, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 296K
Resolution 3.50 Å R-free 0.273
1FP5 CRYSTAL STRUCTURE ANALYSIS OF THE HUMAN IGE-FC CEPSILON3-CEPSILON4 FRAGMENT. Deposited 2000-08-30 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 357–574（218 aa） Fragment：CEPSILON3-CEPSILON4
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；295 K；PEG 4000, sodium acetate pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 2.30 Å R-free 0.270
1G84 THE SOLUTION STRUCTURE OF THE C EPSILON2 DOMAIN FROM IGE Deposited 2000-11-16 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 106–210（105 aa） Fragment：C EPSILON2
Mutation：C16S, C104S No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6；298 K；Ionic strength (raw mmCIF value) 100mM；Pressure 1
NMR sample composition 2mM Ce2 U-15N,13C | 90% H2O/10% D2O
NMR sample composition 1.4mM Ce2 U-15N | 90% H2O/10% D2O
Resolution not provided
2WQR The high resolution crystal structure of IgE Fc Deposited 2009-08-26 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 105–427（323 aa） Fragment：FC FRAGMENT, RESIDUES 105-427
Chain B 105–427（323 aa） Fragment：FC FRAGMENT, RESIDUES 105-427
Mutation：YES Mutation：YES SO4 SULFATE ION × 4 GOL GLYCEROL × 2 TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 1 PG4 TETRAETHYLENE GLYCOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 8.5；291 K；THE PROTEIN CONCENTRATION WAS 1.9 MG/ML. CRYSTALS GREW AT 18 DEGREES C WITH 14% PEG 8000, 200MM LITHIUM SULPHATE, 100MM TRIS-HCL PH 8.5 AS PRECIPITANT.
Resolution 1.90 Å R-free 0.234
2Y7Q THE HIGH-AFFINITY COMPLEX BETWEEN IGE AND ITS RECEPTOR FC EPSILON RI Deposited 2011-02-01 Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 104–428（325 aa） Fragment：FC FRAGMENT COMPRISING DOMAINS CEPSILON2-4, RESIDUES 104-427
Chain D 104–428（325 aa） Fragment：FC FRAGMENT COMPRISING DOMAINS CEPSILON2-4, RESIDUES 104-427
Mutation：YES Mutation：YES NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；SITTING DROP VAPOR DIFFUSION. RESERVOIR SOLUTION CONTAINED 2.8M SODIUM ACETATE PH 7.
Resolution 3.40 Å R-free 0.292
3H9Y Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 209–428（220 aa） Fragment：UNP residues 209-428
Chain B 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；1 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 1 microliter well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.23 Å R-free 0.262
3H9Y Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Assembly 2 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q NH4 AMMONIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；1 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 1 microliter well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.23 Å R-free 0.262
3H9Z Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 209–428（220 aa） Fragment：UNP residues 209-428
Chain B 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；1 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 1 microliter of well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.45 Å R-free 0.277
3H9Z Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Assembly 2 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 209–428（220 aa） Fragment：UNP residues 209-428
Chain D 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q NH4 AMMONIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；1 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 1 microliter of well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.45 Å R-free 0.277
3HA0 Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 209–428（220 aa） Fragment：UNP residues 209-428
Chain B 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；0.5 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 0.5 microliter well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.80 Å R-free 0.280
3HA0 Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Assembly 2 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 209–428（220 aa） Fragment：UNP residues 209-428
Chain D 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；0.5 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 0.5 microliter well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.80 Å R-free 0.280
3HA0 Crystal structure of the IgE-Fc3-4 domains Deposited 2009-04-30 Assembly 3 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 209–428（220 aa） Fragment：UNP residues 209-428
Chain F 209–428（220 aa） Fragment：UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.3；293 K；0.5 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 0.5 microliter well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.80 Å R-free 0.280
4EZM Crystal structure of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-05-03 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 209–428（220 aa） Fragment：Human IgE-Fc(epsilon)3-4, UNP residues 209-428
Chain B 209–428（220 aa） Fragment：Human IgE-Fc(epsilon)3-4, UNP residues 209-428
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 7.5；298 K；3% PEG 8,000, 0.1 M Tris-HCl pH 7.5, VAPOR DIFFUSION, temperature 298K
Resolution 3.10 Å R-free 0.283
4EZM Crystal structure of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-05-03 Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain C 209–428（220 aa） Fragment：Human IgE-Fc(epsilon)3-4, UNP residues 209-428
Chain D 209–428（220 aa） Fragment：Human IgE-Fc(epsilon)3-4, UNP residues 209-428
Not recorded MAN alpha-D-mannopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 7.5；298 K；3% PEG 8,000, 0.1 M Tris-HCl pH 7.5, VAPOR DIFFUSION, temperature 298K
Resolution 3.10 Å R-free 0.283
4EZM Crystal structure of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-05-03 Assembly 3 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain E 209–428（220 aa） Fragment：Human IgE-Fc(epsilon)3-4, UNP residues 209-428
Chain F 209–428（220 aa） Fragment：Human IgE-Fc(epsilon)3-4, UNP residues 209-428
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 7.5；298 K；3% PEG 8,000, 0.1 M Tris-HCl pH 7.5, VAPOR DIFFUSION, temperature 298K
Resolution 3.10 Å R-free 0.283
4GKO Crystal structure of the calcium2+-bound human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-08-13 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 209–428（220 aa） Fragment：UNP residues 209-428
Chain B 209–428（220 aa） Fragment：UNP residues 209-428
Not recorded CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；291 K；0.2 M sodium acetate trihydrate, 0.1 M Tris pH 8.5, 16% PEG 4000, 10 mM CaCl2, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.30 Å R-free 0.312
4GKO Crystal structure of the calcium2+-bound human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-08-13 Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain C 209–428（220 aa） Fragment：UNP residues 209-428
Chain D 209–428（220 aa） Fragment：UNP residues 209-428
Not recorded MAN alpha-D-mannopyranose × 2 CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；291 K；0.2 M sodium acetate trihydrate, 0.1 M Tris pH 8.5, 16% PEG 4000, 10 mM CaCl2, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.30 Å R-free 0.312
4GKO Crystal structure of the calcium2+-bound human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2012-08-13 Assembly 3 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain E 209–428（220 aa） Fragment：UNP residues 209-428
Chain F 209–428（220 aa） Fragment：UNP residues 209-428
Not recorded CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；291 K；0.2 M sodium acetate trihydrate, 0.1 M Tris pH 8.5, 16% PEG 4000, 10 mM CaCl2, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.30 Å R-free 0.312
4GRG Crystal structure of IgE complexed with E2_79, an anti-IgE inhibitor Deposited 2012-08-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain C 210–428（219 aa） Fragment：IG-LIKE DOMAINS 3 AND 4, RESIDUES 210-428
Chain D 210–428（219 aa） Fragment：IG-LIKE DOMAINS 3 AND 4, RESIDUES 210-428
Mutation：G216C Mutation：G216C No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5；298 K；0.1 M Phosphate-citrate pH 4.2, 5% (w/v) PEG-3000, 25% (v/v) 1,2-propanediol, 10% (v/v) glycerol, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 4.24 Å R-free 0.338
4GT7 An engineered disulfide bond reversibly traps the IgE-Fc3-4 in a closed, non-receptor binding conformation Deposited 2012-08-28 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 210–426（217 aa） Fragment：IgE Fc Cepsilon3-Cepsilon4 fragment (unp residues 210-426)
Chain B 210–426（217 aa） Fragment：IgE Fc Cepsilon3-Cepsilon4 fragment (unp residues 210-426)
Mutation：C328A, G335C Mutation：C328A, G335C No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 4.5；298 K；20 mM sodium acetate, pH 4.6, 28.8% (w/v) PEG 4000, 2% (w/v) Anapoe -X-405, VAPOR DIFFUSION, temperature 298K
Resolution 2.61 Å R-free 0.253
4GT7 An engineered disulfide bond reversibly traps the IgE-Fc3-4 in a closed, non-receptor binding conformation Deposited 2012-08-28 Assembly 2 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 210–426（217 aa） Fragment：IgE Fc Cepsilon3-Cepsilon4 fragment (unp residues 210-426)
Chain D 210–426（217 aa） Fragment：IgE Fc Cepsilon3-Cepsilon4 fragment (unp residues 210-426)
Mutation：C328A, G335C Mutation：C328A, G335C No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 4.5；298 K；20 mM sodium acetate, pH 4.6, 28.8% (w/v) PEG 4000, 2% (w/v) Anapoe -X-405, VAPOR DIFFUSION, temperature 298K
Resolution 2.61 Å R-free 0.253
4J4P The complex of human IgE-Fc with two bound Fab fragments Deposited 2013-02-07 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 105–427（323 aa）
Chain B 105–427（323 aa）
Mutation：N265Q, N371Q Mutation：N265Q, N371Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；291 K；PEG 3350, sodium citrate, bis-tris propane, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 2.91 Å R-free 0.284
4KI1 Primitive triclinic crystal form of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2013-05-01 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 209–428（220 aa） Fragment：HUMAN IGE-FC(EPSILON)3-4, UNP residues 209-428
Chain B 209–428（220 aa） Fragment：HUMAN IGE-FC(EPSILON)3-4, UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；291 K；26 % (w/v) PEG 1,500 and 20 % (v/v) glycerol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.20 Å R-free 0.266
4KI1 Primitive triclinic crystal form of the human IgE-Fc(epsilon)3-4 bound to its B cell receptor derCD23 Deposited 2013-05-01 Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain C 209–428（220 aa） Fragment：HUMAN IGE-FC(EPSILON)3-4, UNP residues 209-428
Chain D 209–428（220 aa） Fragment：HUMAN IGE-FC(EPSILON)3-4, UNP residues 209-428
Mutation：N252Q, N264Q Mutation：N252Q, N264Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；291 K；26 % (w/v) PEG 1,500 and 20 % (v/v) glycerol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 3.20 Å R-free 0.266
5ANM Crystal structure of IgE Fc in complex with a neutralizing antibody Deposited 2015-09-07 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain G 211–428（218 aa） Fragment：FC DOMAIN, CE3-CE4, RESIDUES 211-428
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions 100 MM MGCL2, 100 MM SODIUM CITRATE PH 5.0 AND 15% PEG 4000
Resolution 2.85 Å R-free 0.260
5ANM Crystal structure of IgE Fc in complex with a neutralizing antibody Deposited 2015-09-07 Assembly 2 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain E 211–428（218 aa） Fragment：FC DOMAIN, CE3-CE4, RESIDUES 211-428
Chain F 211–428（218 aa） Fragment：FC DOMAIN, CE3-CE4, RESIDUES 211-428
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions 100 MM MGCL2, 100 MM SODIUM CITRATE PH 5.0 AND 15% PEG 4000
Resolution 2.85 Å R-free 0.260
5HYS Structure of IgE complexed with omalizumab Deposited 2016-02-01 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain G 209–428（220 aa） Fragment：Ig-like 3 and Ig-like 4 domains, residues 209-428
Chain I 209–428（220 aa） Fragment：Ig-like 3 and Ig-like 4 domains, residues 209-428
Mutation：C328A, G335C Mutation：C328A, G335C SO4 SULFATE ION × 22 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；294 K；0.2M Lithium Sulfate, 0.1 M Tris pH 8.5, and 41% PEG 400
Resolution 2.50 Å R-free 0.239
5HYS Structure of IgE complexed with omalizumab Deposited 2016-02-01 Assembly 2 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain J 209–428（220 aa） Fragment：Ig-like 3 and Ig-like 4 domains, residues 209-428
Chain K 209–428（220 aa） Fragment：Ig-like 3 and Ig-like 4 domains, residues 209-428
Mutation：C328A, G335C Mutation：C328A, G335C SO4 SULFATE ION × 26 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；294 K；0.2M Lithium Sulfate, 0.1 M Tris pH 8.5, and 41% PEG 400
Resolution 2.50 Å R-free 0.239
5LGJ THE CRYSTAL STRUCTURE OF IGE FC MUTANT - P333C Deposited 2016-07-07 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 108–426（319 aa）
Not recorded SO4 SULFATE ION × 3 PG4 TETRAETHYLENE GLYCOL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；294 K；16% w/v PEG 8,000, 0.1M Tris-HCl pH 8.5, 0.2 M lithium sulfate
Resolution 2.60 Å R-free 0.248
5LGJ THE CRYSTAL STRUCTURE OF IGE FC MUTANT - P333C Deposited 2016-07-07 Assembly 2 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 108–427（320 aa）
Not recorded SO4 SULFATE ION × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；294 K；16% w/v PEG 8,000, 0.1M Tris-HCl pH 8.5, 0.2 M lithium sulfate
Resolution 2.60 Å R-free 0.248
5LGK Crystal structure of the human IgE-Fc bound to its B cell receptor derCD23 Deposited 2016-07-07 Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 114–421（308 aa）
Chain B 114–421（308 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；294 K；15% (w/v) PEG 8,000, 0.1 M sodium citrate, 0.05 M ammonium sulfate
Resolution 3.50 Å R-free 0.278
5LGK Crystal structure of the human IgE-Fc bound to its B cell receptor derCD23 Deposited 2016-07-07 Assembly 2 Other combination Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 114–421（308 aa）
Chain D 114–421（308 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；294 K；15% (w/v) PEG 8,000, 0.1 M sodium citrate, 0.05 M ammonium sulfate
Resolution 3.50 Å R-free 0.278
5MOI Crystal structure of human IgE-Fc epsilon 3-4 Deposited 2016-12-14 Assembly 1 Other combination Homooligomer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 209–428（220 aa）
Chain B 209–428（220 aa）
Chain C 209–428（220 aa）
Chain D 209–428（220 aa）
Chain E 209–428（220 aa）
Chain F 209–428（220 aa）
Not recorded PEG DI(HYDROXYETHYL)ETHER × 6 PO4 PHOSPHATE ION × 6 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；291 K；25% (v/v) PEG1500, 0.1M SPG (succinic acid, sodium dihydrogen phosphate and glycine in the ratio 2:7:7)
Resolution 2.20 Å R-free 0.234
5MOJ Crystal structure of IgE-Fc epsilon 3-4 Deposited 2016-12-14 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 209–428（220 aa）
Chain B 209–428（220 aa）
Not recorded SO4 SULFATE ION × 7 EDO 1,2-ETHANEDIOL × 2 PEG DI(HYDROXYETHYL)ETHER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；291 K；25% PEG 4000 0.15M Ammonium Sulphate 0.1M MES
Resolution 2.26 Å R-free 0.236
5MOK Crystal structure of human IgE-Fc epsilon 3-4 Deposited 2016-12-14 Assembly 1 Other combination Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 209–428（220 aa）
Chain B 209–428（220 aa）
Chain C 209–428（220 aa）
Chain D 209–428（220 aa）
Not recorded PEG DI(HYDROXYETHYL)ETHER × 2 EDO 1,2-ETHANEDIOL × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；291 K；25% (v/v) PEG1500 0.1M SPG (succinic acid, sodium dihydrogen phosphate and glycine in the ratio 2:7:7) at pH 6.0
Resolution 2.00 Å R-free 0.226
5MOL Human IgE-Fc crystal structure Deposited 2016-12-14 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 104–428（325 aa）
Chain B 104–428（325 aa）
Not recorded PG0 2-(2-METHOXYETHOXY)ETHANOL × 2 EDO 1,2-ETHANEDIOL × 5 PEG DI(HYDROXYETHYL)ETHER × 2 AE3 2-(2-ETHOXYETHOXY)ETHANOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；291 K；0.1M Tris HCL pH 8.5 25% PEG 550 MME
Resolution 1.75 Å R-free 0.232
5NQW IgE-Fc in complex with single domain antibody 026 Deposited 2017-04-21 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 215–426（212 aa）
Chain B 215–426（212 aa）
Not recorded GOL GLYCEROL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；277 K；0.1 M imidazole pH 7.0 11-12 % polyethylene glycol 20.000
Resolution 3.40 Å R-free 0.241
6EYO Structure of extended IgE-Fc in complex with two anti-IgE Fabs Deposited 2017-11-13 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 104–428（325 aa）
Chain B 104–428（325 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；291 K；0.1M Tris-HCl pH8.0 and 45% (v/v) pentaerythritol propoxylate (5/4PO/OH)
Resolution 3.70 Å R-free 0.288
6UQR Complex of IgE and Ligelizumab Deposited 2019-10-21 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 209–426（218 aa） Fragment：C3-4
Chain D 209–426（218 aa） Fragment：C3-4
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.9；287.15 K；0.2M Na Thiocyanate pH 6.9, 20% PEG3350, 10 mM Spermidine
Resolution 3.65 Å R-free 0.295
7MXI IgE-Fc in complex with DARPins E2_79 and E3_53 Deposited 2021-05-19 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 209–426（218 aa） Fragment：C3-4
Chain B 209–426（218 aa） Fragment：C3-4
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；291 K；E3_53, E2_79, and IgE-Fc3-4 were mixed in equimolar ratios with E3_53 and E2_79, and intact complexes were purified by SEC in 20 mM Tris-HCl, pH 8.0, 50mM NaCl and concentrated to 7mg/ml and mixed 1:1 with acetate buffer pH 4.6, 43% ethylene glycol w/v in hanging drops
Resolution 2.80 Å R-free 0.256
7SHT Structure of a partially disrupted IgE high affinity receptor complex bound to an omalizumab variant Deposited 2021-10-11 Assembly 1 Other combination Heteromer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain B 109–428（320 aa）
Chain D 109–428（320 aa）
Mutation：G335C Mutation：G335C NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 7.29 Å
7SHU IgE-Fc in complex with omalizumab variant C02 Deposited 2021-10-11 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 209–426（218 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 EDO 1,2-ETHANEDIOL × 1 PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；291 K；0.2M Lithium sulfate, 0.1 M Phosphate citrate pH 4.2, 20% (w/v) PEG 1000
Resolution 2.75 Å R-free 0.275
7SHU IgE-Fc in complex with omalizumab variant C02 Deposited 2021-10-11 Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 209–426（218 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；291 K；0.2M Lithium sulfate, 0.1 M Phosphate citrate pH 4.2, 20% (w/v) PEG 1000
Resolution 2.75 Å R-free 0.275
7SHY IgE-Fc in complex with omalizumab scFv Deposited 2021-10-11 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain G 209–426（218 aa） Fragment：C3-4
Chain H 209–426（218 aa） Fragment：C3-4
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 MAN alpha-D-mannopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.02 M Magnesium chloride, 0.1M HEPES pH 7.5, 22% (w/v) Polyacrylic acid 5100 sodium salt
Resolution 3.00 Å R-free 0.230
7SHY IgE-Fc in complex with omalizumab scFv Deposited 2021-10-11 Assembly 2 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 209–426（218 aa） Fragment：C3-4
Chain B 209–426（218 aa） Fragment：C3-4
Not recorded GOL GLYCEROL × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.02 M Magnesium chloride, 0.1M HEPES pH 7.5, 22% (w/v) Polyacrylic acid 5100 sodium salt
Resolution 3.00 Å R-free 0.230
7SHZ IgE-Fc in complex with HAE Deposited 2021-10-11 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 209–426（218 aa） Fragment：C3-4
Chain B 209–426（218 aa） Fragment：C3-4
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 PO4 PHOSPHATE ION × 2 ACT ACETATE ION × 1 EDO 1,2-ETHANEDIOL × 2 MAN alpha-D-mannopyranose × 2 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M Sodium acetate pH 4.6, 8% (w/v) PEG 4000
Resolution 3.00 Å R-free 0.235
7SHZ IgE-Fc in complex with HAE Deposited 2021-10-11 Assembly 2 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain G 209–426（218 aa） Fragment：C3-4
Chain H 209–426（218 aa） Fragment：C3-4
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M Sodium acetate pH 4.6, 8% (w/v) PEG 4000
Resolution 3.00 Å R-free 0.235
7SI0 IgE-Fc in complex with 813 Deposited 2021-10-12 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 209–426（218 aa） Fragment：C3-4
Chain B 209–426（218 aa） Fragment：C3-4
Not recorded NA SODIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M CAPS pH 10.5, 40%(v/v) MPD
Resolution 3.00 Å R-free 0.261
7SI0 IgE-Fc in complex with 813 Deposited 2021-10-12 Assembly 2 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain G 209–426（218 aa） Fragment：C3-4
Chain H 209–426（218 aa） Fragment：C3-4
Not recorded NA SODIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M CAPS pH 10.5, 40%(v/v) MPD
Resolution 3.00 Å R-free 0.261
8C1B Focused map for structure of IgE bound to the ectodomain of FceRIa Deposited 2022-12-20 Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain H 108–423（316 aa）
Chain X 108–423（316 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8C1C Structure of IgE bound to the ectodomain of FceRIa Deposited 2022-12-20 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain H 1–423（423 aa）
Chain X 1–423（423 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8Z0T Structure of the human ige-fc bound to its high affinity receptor fc(epsilon) Deposited 2024-04-10 Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain D 106–428（323 aa）
Chain E 106–428（323 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.58 Å

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.