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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：P83949 New Search
7PDB entries
8Biological assembly
9chain/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
1B8I STRUCTURE OF THE HOMEOTIC UBX/EXD/DNA TERNARY COMPLEX Deposited 1999-02-01 Assembly 1 Protein–DNA Heteromer；Protein × 2 PDB declaration: tetrameric（4） Consistent with all polymers
Chain A 233–313（81 aa） Fragment：YPWM MOTIF AND HOMEODOMAIN
Mutation：C139S No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；0.6M AMMONIUM PHOSPHATE, pH 4.5, VAPOR DIFFUSION, HANGING DROP
Resolution 2.40 Å R-free 0.304
4CYC CRYSTAL STRUCTURE OF A UBX-EXD-DNA COMPLEX INCLUDING THE HEXAPEPTIDE AND UBDA MOTIFS Deposited 2014-04-10 Assembly 1 Protein–DNA Heteromer；Protein × 2 PDB declaration: tetrameric（4） Consistent with all polymers
Chain A 233–324（92 aa） Fragment：HOMEODOMAIN WITH HX AND UBDA, RESIDUES 233-367
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；0.1 M AMMONIUM PHOSPHATE, pH 7.5
Resolution 2.36 Å R-free 0.227
4UUS CRYSTAL STRUCTURE OF A UBX-EXD-DNA COMPLEX INCLUDING THE UBDA MOTIF Deposited 2014-07-31 Assembly 1 Protein–DNA Heteromer；Protein × 2 PDB declaration: tetrameric（4） Consistent with all polymers
Chain A 292–367（76 aa） Fragment：HOMEODOMAIN AND UBDA, RESIDUES 292-367
Mutation：YES No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 4.5；0.2M AMONIUM SULFATE, 0.1 M TRI-SODIUM-CITRATE PH 4.5, 4% P4000
Resolution 2.55 Å R-free 0.239
4UUS CRYSTAL STRUCTURE OF A UBX-EXD-DNA COMPLEX INCLUDING THE UBDA MOTIF Deposited 2014-07-31 Assembly 2 Protein–DNA Heteromer；Protein × 2 PDB declaration: tetrameric（4） Consistent with all polymers
Chain E 292–367（76 aa） Fragment：HOMEODOMAIN AND UBDA, RESIDUES 292-367
Mutation：YES No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 4.5；0.2M AMONIUM SULFATE, 0.1 M TRI-SODIUM-CITRATE PH 4.5, 4% P4000
Resolution 2.55 Å R-free 0.239
4UUT Crystal structure of the Ultrabithorax protein Deposited 2014-07-31 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 233–324（92 aa） Fragment：HOMEODOMAIN AND UBDA, RESIDUES 233-324
Not recorded SO4 SULFATE ION × 4 CL CHLORIDE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions 20% 1-4 BUTANEDIOL, 0.2M LISO4, 0.1M MES PH 6
Resolution 2.80 Å R-free 0.237
8F36 Ubx Homeodomain NMR solution structure Deposited 2022-11-09 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 295–354（60 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6；298 K；Ionic strength (raw mmCIF value) 128；Pressure 1
NMR sample composition 0.76 mM [U-100% 13C; U-100% 15N] UbxHD, 20 mM MES, 100 mM NaCl, 2 mM TCEP, 5 mM MgCl2, 90% H2O/10% D2O | 90% H2O/10% D2O
Resolution not provided
9YZP Isoreticular co-crystal 1 with asymmetrical expanded duplex (31mer) containing insert sequence TGATGAGCAG and loaded with ultrabithorax homeodomain Deposited 2025-10-30 Assembly 1 Protein–DNA Heteromer；Protein × 2 PDB declaration: tetrameric（4） Consistent with all polymers
Chain D 295–354（60 aa）
Not recorded MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；298 K；40mM Magnesium acetate, 1.5M Lithium sulfate, 50mM MES pH 6.5. The crystal was crosslinked with 45mg/mL EDC overnight, and then looped into a solution of 50mM potassium chloride, 4mM calcium chloride, 10% glycerol, and 10mM Tris hydrochloride for 1 hour. The drop was then supplemented with 40 micromolar Ultrabithorax homeodomain.
Resolution 3.67 Å R-free 0.295
9YZR Isoreticular co-crystal 1 with asymmetrical expanded duplex (31mer) containing insert sequence TAATTAGGCCG and loaded with ultrabithorax homeodomain Deposited 2025-10-30 Assembly 1 Protein–DNA Heteromer；Protein × 3 PDB declaration: pentameric（5） Consistent with all polymers
Chain D 295–354（60 aa）
Chain E 295–354（60 aa）
Not recorded MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；298 K；30mM magnesium acetate, 900mM Lithium sulfate, 50mM MES pH 6.5. The crystal was crosslinked with 48mg/mL EDC overnight, and then looped into a solution of 35mM potassium chloride, 4mM calcium chloride, 10% glycerol, and 10mM Tris hydrochloride for 1 hour. The drop was then supplemented with 80 micromolar Ultrabithorax homeodomain.
Resolution 3.39 Å R-free 0.298

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.