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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：Q8CII9 New Search
3PDB entries
3Biological assembly
3chain/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
4NN5 Cytokine receptor complex - Crystal form 1A Deposited 2013-11-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 20–222（203 aa） Fragment：extracellular domain (UNP residues 20-222)
Mutation：N122Q ACT ACETATE ION × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.1；293 K；14% PEG4000, 0.3 M sodium acetate, pH 4.5, 0.3 M calcium acetate, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 1.90 Å R-free 0.201
4NN6 Cytokine receptor complex - Crystal form 1B Deposited 2013-11-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 20–222（203 aa） Fragment：extracellular domain (UNP residues 20-222)
Mutation：N122Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.1；293 K；14% PEG4000, 0.3 M sodium acetate, pH 4.5, 0.3 M calcium acetate, soaked in 18% PEG4000, 0.1 M Tris-HCl, pH 7.5, 0.3 M calcium acetate for 1 hour prior to cryoprotection, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.54 Å R-free 0.297
4NN7 Cytokine receptor complex - Crystal form 2 Deposited 2013-11-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 20–222（203 aa） Fragment：extracellular domain (UNP residues 20-222)
Mutation：N53Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；293 K；25% pentaerythritol ethoxylate, 0.1 M Tris-HCl, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 3.77 Å R-free 0.286

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.