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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：Q13370 New Search
4PDB entries
10Biological assembly
20chain/assembly records
Main Difference Dimensions in This Set
Different construct 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
1SO2 CATALYTIC DOMAIN OF HUMAN PHOSPHODIESTERASE 3B In COMPLEX WITH A DIHYDROPYRIDAZINE INHIBITOR Deposited 2004-03-12 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Chain B 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Not recorded MG MAGNESIUM ION × 5 HG9 1-DEOXY-1-[(2-HYDROXYETHYL)(NONANOYL)AMINO]HEXITOL × 4 666 6-(4-{[2-(3-IODOBENZYL)-3-OXOCYCLOHEX-1-EN-1-YL]AMINO}PHENYL)-5-METHYL-4,5-DIHYDROPYRIDAZIN-3(2H)-ONE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；Peg MMe, MES, MAgnesium Sulfate, HEGA-9, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 2.40 Å R-free 0.277
1SO2 CATALYTIC DOMAIN OF HUMAN PHOSPHODIESTERASE 3B In COMPLEX WITH A DIHYDROPYRIDAZINE INHIBITOR Deposited 2004-03-12 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Chain D 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Not recorded MG MAGNESIUM ION × 4 666 6-(4-{[2-(3-IODOBENZYL)-3-OXOCYCLOHEX-1-EN-1-YL]AMINO}PHENYL)-5-METHYL-4,5-DIHYDROPYRIDAZIN-3(2H)-ONE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；Peg MMe, MES, MAgnesium Sulfate, HEGA-9, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 2.40 Å R-free 0.277
1SOJ CATALYTIC DOMAIN OF HUMAN PHOSPHODIESTERASE 3B IN COMPLEX WITH IBMX Deposited 2004-03-15 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Chain B 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Not recorded MG MAGNESIUM ION × 4 IBM 3-ISOBUTYL-1-METHYLXANTHINE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；Peg MME, MES, MAgnesium Sulfate, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 2.90 Å R-free 0.249
1SOJ CATALYTIC DOMAIN OF HUMAN PHOSPHODIESTERASE 3B IN COMPLEX WITH IBMX Deposited 2004-03-15 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Chain D 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Not recorded MG MAGNESIUM ION × 4 IBM 3-ISOBUTYL-1-METHYLXANTHINE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；Peg MME, MES, MAgnesium Sulfate, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 2.90 Å R-free 0.249
1SOJ CATALYTIC DOMAIN OF HUMAN PHOSPHODIESTERASE 3B IN COMPLEX WITH IBMX Deposited 2004-03-15 Assembly 3 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Chain F 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Not recorded MG MAGNESIUM ION × 4 IBM 3-ISOBUTYL-1-METHYLXANTHINE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；Peg MME, MES, MAgnesium Sulfate, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 2.90 Å R-free 0.249
1SOJ CATALYTIC DOMAIN OF HUMAN PHOSPHODIESTERASE 3B IN COMPLEX WITH IBMX Deposited 2004-03-15 Assembly 4 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain G 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Chain H 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Not recorded MG MAGNESIUM ION × 4 IBM 3-ISOBUTYL-1-METHYLXANTHINE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；Peg MME, MES, MAgnesium Sulfate, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 2.90 Å R-free 0.249
1SOJ CATALYTIC DOMAIN OF HUMAN PHOSPHODIESTERASE 3B IN COMPLEX WITH IBMX Deposited 2004-03-15 Assembly 5 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain I 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Chain J 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Not recorded MG MAGNESIUM ION × 4 IBM 3-ISOBUTYL-1-METHYLXANTHINE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；Peg MME, MES, MAgnesium Sulfate, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 2.90 Å R-free 0.249
1SOJ CATALYTIC DOMAIN OF HUMAN PHOSPHODIESTERASE 3B IN COMPLEX WITH IBMX Deposited 2004-03-15 Assembly 6 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain K 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Chain L 654–1073（420 aa） Fragment：catalytic domain, residues 654-1073
Not recorded MG MAGNESIUM ION × 4 IBM 3-ISOBUTYL-1-METHYLXANTHINE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；Peg MME, MES, MAgnesium Sulfate, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 2.90 Å R-free 0.249
8SYC Crystal structure of PDE3B in complex with GSK4394835A Deposited 2023-05-25 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 654–1074（421 aa）
Chain D 654–1074（421 aa）
Mutation：K691D, R783D, A831E, K880E, S981D Mutation：K691D, R783D, A831E, K880E, S981D MG MAGNESIUM ION × 4 X5W [3-[(4,7-dimethoxyquinolin-2-yl)carbonylamino]-5-[methyl-(phenylmethyl)carbamoyl]phenyl]-oxidanyl-oxidanylidene-boron × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277 K；0.2 M NaCl, 25%PEG3350,0.1 M bis-Tris pH6.5, cryo: 25% ethylene glycol
Resolution 2.70 Å R-free 0.224
9YUD Re-Refined Human Phosphodiesterase 3B complexed with GSK4394835A Deposited 2025-10-22 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 654–1074（421 aa）
Chain B 654–1074（421 aa）
Not recorded X5W [3-[(4,7-dimethoxyquinolin-2-yl)carbonylamino]-5-[methyl-(phenylmethyl)carbamoyl]phenyl]-oxidanyl-oxidanylidene-boron × 1 MG MAGNESIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277 K；0.2 M NaCl, 25%PEG3350,0.1 M bis-Tris pH 6.5, cryo: 25% ethylene glycol
Resolution 2.70 Å R-free 0.238

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.