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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：P55263 New Search
5PDB entries
7Biological assembly
8chain/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
1BX4 STRUCTURE OF HUMAN ADENOSINE KINASE AT 1.50 ANGSTROMS Deposited 1998-10-13 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–345（345 aa）
Not recorded CL CHLORIDE ION × 2 MG MAGNESIUM ION × 3 ADN ADENOSINE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；20%PEG 4K, 0.16M MGCL2, 0.1M TRIS, PH 7.5
Resolution 1.50 Å R-free 0.226
4O1L Human Adenosine Kinase in complex with inhibitor Deposited 2013-12-16 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 17–362（346 aa） Fragment：UNP residues 17-362
Chain B 17–362（346 aa） Fragment：UNP residues 17-362
Not recorded MG MAGNESIUM ION × 4 HO4 5-ethynyl-7-(beta-D-ribofuranosyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine × 3 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.50 Å R-free 0.263
4O1L Human Adenosine Kinase in complex with inhibitor Deposited 2013-12-16 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 17–362（346 aa） Fragment：UNP residues 17-362
Not recorded MG MAGNESIUM ION × 2 HO4 5-ethynyl-7-(beta-D-ribofuranosyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine × 2 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.50 Å R-free 0.263
4O1L Human Adenosine Kinase in complex with inhibitor Deposited 2013-12-16 Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 17–362（346 aa） Fragment：UNP residues 17-362
Not recorded MG MAGNESIUM ION × 2 HO4 5-ethynyl-7-(beta-D-ribofuranosyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.50 Å R-free 0.263
9O7P Crystal structure of human adenosine kinase (ADK) in complex with inhibitor BKI-1817 Deposited 2025-04-15 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–345（345 aa）
Not recorded CL CHLORIDE ION × 3 SO4 SULFATE ION × 15 A1B96 (6M)-6-{4-amino-1-[(1-methylpiperidin-4-yl)methyl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}quinolin-2(1H)-one × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4；291 K；2.4M ammonium sulfate, 0.1M Citrate pH 4.0. HosaA.19365.a.VZ21.PC00201 at 18 mg/mL. Cocrystallization with 2mM inhibitor. plate 14484 A12 drop 2, Puck: PSL1601, Cryo: 2.5M lithium sulfate
Resolution 2.51 Å R-free 0.246
9O7Q Crystal structure of human adenosine kinase (ADK) in complex with inhibitor BKI-1676 Deposited 2025-04-15 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–345（345 aa）
Not recorded A1B95 1-[(3P)-3-[6-(cyclopropyloxy)naphthalen-2-yl]-4-(methylamino)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-2-methylpropan-2-ol × 1 SO4 SULFATE ION × 13 CL CHLORIDE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4；291 K；2.4M ammonium sulfate, 0.1M Citrate pH 4.0. HosaA.19365.a.VZ21.PC00201 at 18 mg/mL. Cocrystallization with 2mM inhibitor. plate 14484 A12/A8 drop 2, Puck: PSL1512, Cryo: 2.5M lithium sulfate
Resolution 2.81 Å R-free 0.265
9O7R Crystal structure of human adenosine kinase (ADK) in complex with inhibitor BKI-1553 Deposited 2025-04-15 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–345（345 aa）
Not recorded CL CHLORIDE ION × 5 UW5 1-{4-amino-3-[6-(cyclopropyloxy)naphthalen-2-yl]-1H-pyrazolo[3,4-d]pyrimidin-1-yl}-2-methylpropan-2-ol × 1 SO4 SULFATE ION × 14 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4；291 K；2.4M ammonium sulfate, 0.1M Citrate pH 4.0. HosaA.19365.a.VZ21.PC00201 at 18 mg/mL. Cocrystallization with 2mM inhibitor. plate 14484 A12 drop 2, Puck: PSL1502, Cryo: 2.5M lithium sulfate
Resolution 2.41 Å R-free 0.258

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.