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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：O19705 New Search
4PDB entries
6Biological assembly
6chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state 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
5KSV Crystal structure of HLA-DQ2.5-CLIP2 Deposited 2016-07-10 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 1–193（193 aa） Fragment：UNP residues 1-193
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；291 K；0.1 M BIS-TRIS, pH 5.5, 22% PEG 3350
Resolution 2.19 Å R-free 0.210
6U3N LS2.8/3.15 - DQ2-P.fluor-alpha1a complex Deposited 2019-08-22 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 1–183（183 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；22% PEG3350, 0.2M Na-K Tartrate, 0.1M MES pH6.5
Resolution 2.80 Å
6U3O JR51 DQ2-p.aeru-alpha2a complex Deposited 2019-08-22 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain E 1–183（183 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；23%PEG3350, 0.01mM Na-Acetate, 0.1 M Tris pH8.0
Resolution 2.74 Å
6U3O JR51 DQ2-p.aeru-alpha2a complex Deposited 2019-08-22 Assembly 2 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain C 1–183（183 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；23%PEG3350, 0.01mM Na-Acetate, 0.1 M Tris pH8.0
Resolution 2.74 Å
6XP6 3C11-DQ2-glia-a2 complex Deposited 2020-07-08 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 1–183（183 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 IPA ISOPROPYL ALCOHOL × 7 CL CHLORIDE ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；10% PEG 4000 20% 2-propanol 0.1M HEPES
Resolution 2.40 Å R-free 0.212
6XP6 3C11-DQ2-glia-a2 complex Deposited 2020-07-08 Assembly 2 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain D 1–183（183 aa）
Not recorded IPA ISOPROPYL ALCOHOL × 5 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；10% PEG 4000 20% 2-propanol 0.1M HEPES
Resolution 2.40 Å R-free 0.212

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.