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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：Q9UKJ1 New Search
4PDB entries
8Biological assembly
8chain/assembly records
Main Difference Dimensions in This Set
Different mutation/modification Different assembly state 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
4NFB Structure of paired immunoglobulin-like type 2 receptor (PILR ) Deposited 2013-10-31 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 32–150（119 aa） Fragment：UNP residues 32-150
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.6；277 K；0.1M sodium citrate tribasic dehydrate pH 5.6, 20%(v/v) 2-propanol, 20%(w/v) polyethylene glycol 4,000, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 1.60 Å R-free 0.225
5XO2 Crystal structure of human paired immunoglobulin-like type 2 receptor alpha with synthesized glycopeptide II Deposited 2017-05-25 Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 32–150（119 aa） Fragment：UNP residues 32-150
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；0.1M MES monohydrate pH 6.5, 1.6M Magnesium sulfate heptahydrate
Resolution 2.20 Å R-free 0.262
5XO2 Crystal structure of human paired immunoglobulin-like type 2 receptor alpha with synthesized glycopeptide II Deposited 2017-05-25 Assembly 2 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 32–150（119 aa） Fragment：UNP residues 32-150
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；0.1M MES monohydrate pH 6.5, 1.6M Magnesium sulfate heptahydrate
Resolution 2.20 Å R-free 0.262
5XOF Crystal structure of human paired immunoglobulin-like type 2 receptor alpha with synthesized glycopeptide I Deposited 2017-05-28 Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 32–150（119 aa） Fragment：UNP residues 32-150
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；0.1M Tris-HCl pH8.5, 25% (w/v) PEG 6000
Resolution 1.96 Å R-free 0.269
5XOF Crystal structure of human paired immunoglobulin-like type 2 receptor alpha with synthesized glycopeptide I Deposited 2017-05-28 Assembly 2 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 32–150（119 aa） Fragment：UNP residues 32-150
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；0.1M Tris-HCl pH8.5, 25% (w/v) PEG 6000
Resolution 1.96 Å R-free 0.269
5XOF Crystal structure of human paired immunoglobulin-like type 2 receptor alpha with synthesized glycopeptide I Deposited 2017-05-28 Assembly 3 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 32–150（119 aa） Fragment：UNP residues 32-150
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；0.1M Tris-HCl pH8.5, 25% (w/v) PEG 6000
Resolution 1.96 Å R-free 0.269
5XOF Crystal structure of human paired immunoglobulin-like type 2 receptor alpha with synthesized glycopeptide I Deposited 2017-05-28 Assembly 4 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 32–150（119 aa） Fragment：UNP residues 32-150
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；0.1M Tris-HCl pH8.5, 25% (w/v) PEG 6000
Resolution 1.96 Å R-free 0.269
9PD2 Crystal structure of PILRA in complex with Fab portion of antagonist antibody Deposited 2025-06-30 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 32–150（119 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；298 K；0.1 M CAPS pH 10.5, 20% PEG 8000, 0.2 M NaCl
Resolution 2.58 Å R-free 0.277

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.