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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：Q2YIQ6 New Search
3PDB entries
6Biological assembly
12chain/assembly records
Main Difference Dimensions in This Set
Different mutation/modification Different ligand/ion 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
11EF Crystal Structure of L-erythrulose-1-phosphate isomerase from Brucella melitensis (P21 form) Deposited 2026-02-18 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 3–256（254 aa）
Chain B 3–256（254 aa）
Mutation：A173D Mutation：A173D CL CHLORIDE ION × 1 GOL GLYCEROL × 2 PO4 PHOSPHATE ION × 3 NA SODIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；291 K；JCSG+ D12: 40 mM potassium phosphate, 16% PEG 8000, 20% glycerol. BrabA.00276.a.B2.PW39519 at 15.2 mg/mL. plate 20694 D12 drop 1, Puck: PSL-1811, Cryo: JCSG+ D12.
Resolution 2.15 Å R-free 0.218
11EF Crystal Structure of L-erythrulose-1-phosphate isomerase from Brucella melitensis (P21 form) Deposited 2026-02-18 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 3–256（254 aa）
Chain D 3–256（254 aa）
Mutation：A173D Mutation：A173D CL CHLORIDE ION × 1 GOL GLYCEROL × 2 PO4 PHOSPHATE ION × 3 NA SODIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；291 K；JCSG+ D12: 40 mM potassium phosphate, 16% PEG 8000, 20% glycerol. BrabA.00276.a.B2.PW39519 at 15.2 mg/mL. plate 20694 D12 drop 1, Puck: PSL-1811, Cryo: JCSG+ D12.
Resolution 2.15 Å R-free 0.218
11EG Crystal Structure of L-erythrulose-1-phosphate isomerase from Brucella melitensis (P1 form) Deposited 2026-02-18 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 3–256（254 aa）
Chain B 3–256（254 aa）
Mutation：A173D Mutation：A173D CL CHLORIDE ION × 6 NA SODIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；291 K；Berkeley B2: 100 mM HEPES, pH 7.5, 400 mM NaCl, 30% PEG 3350. BrabA.00276.a.B2.PW39519 at 15.2 mg/mL. plate 20692 B2 drop 1, Puck: PSL-2008, Cryo: Berkeley B2.
Resolution 1.60 Å R-free 0.183
11EG Crystal Structure of L-erythrulose-1-phosphate isomerase from Brucella melitensis (P1 form) Deposited 2026-02-18 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 3–256（254 aa）
Chain D 3–256（254 aa）
Mutation：A173D Mutation：A173D CL CHLORIDE ION × 4 NA SODIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；291 K；Berkeley B2: 100 mM HEPES, pH 7.5, 400 mM NaCl, 30% PEG 3350. BrabA.00276.a.B2.PW39519 at 15.2 mg/mL. plate 20692 B2 drop 1, Puck: PSL-2008, Cryo: Berkeley B2.
Resolution 1.60 Å R-free 0.183
13GN Crystal Structure of L-erythrulose-1-phosphate isomerase from Brucella melitensis in complex with SN-GLYCEROL-1-PHOSPHATE Deposited 2026-05-05 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 3–256（254 aa） Fragment：K3-N256
Chain D 3–256（254 aa） Fragment：K3-N256
Mutation：A173D Mutation：A173D CL CHLORIDE ION × 2 NA SODIUM ION × 3 1GP SN-GLYCEROL-1-PHOSPHATE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；291 K；70 mM MES pH 6.5, 70 mM CaCl2, 14% PEG 1500, 8.4% hexanediol. BrabA.00276.a.B2.PW39519 at 15.2 mg/mL. 20 hour soak in 10 mM glycerol 3-phosphate (D/L mixture), 1GP fit best to the electron density, plate Liu-S-202 E9-F10, Puck: PSL-0208, Cryo: 100 mM MES, pH 6.5, 100 mM CaCl2, 20% PEG 1500, 12% hexanediol
Resolution 1.95 Å R-free 0.216
13GN Crystal Structure of L-erythrulose-1-phosphate isomerase from Brucella melitensis in complex with SN-GLYCEROL-1-PHOSPHATE Deposited 2026-05-05 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 3–256（254 aa） Fragment：K3-N256
Chain C 3–256（254 aa） Fragment：K3-N256
Mutation：A173D Mutation：A173D CL CHLORIDE ION × 1 NA SODIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；291 K；70 mM MES pH 6.5, 70 mM CaCl2, 14% PEG 1500, 8.4% hexanediol. BrabA.00276.a.B2.PW39519 at 15.2 mg/mL. 20 hour soak in 10 mM glycerol 3-phosphate (D/L mixture), 1GP fit best to the electron density, plate Liu-S-202 E9-F10, Puck: PSL-0208, Cryo: 100 mM MES, pH 6.5, 100 mM CaCl2, 20% PEG 1500, 12% hexanediol
Resolution 1.95 Å R-free 0.216

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.