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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：P31226 New Search
15PDB entries
30Biological assembly
30chain/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
6O0D Saxiphilin Apo structure Deposited 2019-02-16 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；0.1 M sodium cacodylate pH 6.5, 5% PEG 8000, and 40% 2-methyl-2,4-pentanediol (MPD)
Resolution 2.50 Å R-free 0.253
6O0D Saxiphilin Apo structure Deposited 2019-02-16 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；0.1 M sodium cacodylate pH 6.5, 5% PEG 8000, and 40% 2-methyl-2,4-pentanediol (MPD)
Resolution 2.50 Å R-free 0.253
6O0E Saxiphilin:STX complex, soaking Deposited 2019-02-16 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Not recorded 9SL [(3aS,4R,10aS)-2,6-diamino-10,10-dihydroxy-3a,4,9,10-tetrahydro-3H,8H-pyrrolo[1,2-c]purin-4-yl]methyl carbamate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.1 M sodium cacodylate pH 6.5, 5% PEG 8000, and 40% 2-methyl-2,4-pentanediol (MPD). 1mM final concentration of STX was added during soaking
Resolution 2.50 Å R-free 0.262
6O0E Saxiphilin:STX complex, soaking Deposited 2019-02-16 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Not recorded 9SL [(3aS,4R,10aS)-2,6-diamino-10,10-dihydroxy-3a,4,9,10-tetrahydro-3H,8H-pyrrolo[1,2-c]purin-4-yl]methyl carbamate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.1 M sodium cacodylate pH 6.5, 5% PEG 8000, and 40% 2-methyl-2,4-pentanediol (MPD). 1mM final concentration of STX was added during soaking
Resolution 2.50 Å R-free 0.262
6O0F Saxiphilin:STX complex, co-crystal Deposited 2019-02-16 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Not recorded 9SL [(3aS,4R,10aS)-2,6-diamino-10,10-dihydroxy-3a,4,9,10-tetrahydro-3H,8H-pyrrolo[1,2-c]purin-4-yl]methyl carbamate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；0.1 M sodium cacodylate pH 6.5, 5% PEG 8000, and 40% 2-methyl-2,4-pentanediol (MPD). STX: Saxiphilin molar ratio 1:1.1
Resolution 2.12 Å R-free 0.259
6O0F Saxiphilin:STX complex, co-crystal Deposited 2019-02-16 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Not recorded 9SL [(3aS,4R,10aS)-2,6-diamino-10,10-dihydroxy-3a,4,9,10-tetrahydro-3H,8H-pyrrolo[1,2-c]purin-4-yl]methyl carbamate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；0.1 M sodium cacodylate pH 6.5, 5% PEG 8000, and 40% 2-methyl-2,4-pentanediol (MPD). STX: Saxiphilin molar ratio 1:1.1
Resolution 2.12 Å R-free 0.259
8D6P Rana catesbeiana saxiphilin mutant - Y558A Deposited 2022-06-06 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Mutation：Y558A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD
Resolution 2.60 Å R-free 0.264
8D6P Rana catesbeiana saxiphilin mutant - Y558A Deposited 2022-06-06 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Mutation：Y558A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD
Resolution 2.60 Å R-free 0.264
8D6Q Rana catesbeiana saxiphilin mutant - Y558I Deposited 2022-06-06 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Mutation：Y558I No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 27% MPD
Resolution 2.70 Å R-free 0.272
8D6Q Rana catesbeiana saxiphilin mutant - Y558I Deposited 2022-06-06 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Mutation：Y558I No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 27% MPD
Resolution 2.70 Å R-free 0.272
8D6S Rana catesbeiana saxiphilin mutant - Y558A:STX (co-crystal) Deposited 2022-06-06 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Mutation：Y558A 9SL [(3aS,4R,10aS)-2,6-diamino-10,10-dihydroxy-3a,4,9,10-tetrahydro-3H,8H-pyrrolo[1,2-c]purin-4-yl]methyl carbamate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD, STX:Saxiphilin molar ratio 1.1:1
Resolution 2.60 Å R-free 0.262
8D6S Rana catesbeiana saxiphilin mutant - Y558A:STX (co-crystal) Deposited 2022-06-06 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Mutation：Y558A 9SL [(3aS,4R,10aS)-2,6-diamino-10,10-dihydroxy-3a,4,9,10-tetrahydro-3H,8H-pyrrolo[1,2-c]purin-4-yl]methyl carbamate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD, STX:Saxiphilin molar ratio 1.1:1
Resolution 2.60 Å R-free 0.262
8D6T Rana catesbeiana saxiphilin mutant - Y558I:STX (co-crystal) Deposited 2022-06-06 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Mutation：Y558I 9SL [(3aS,4R,10aS)-2,6-diamino-10,10-dihydroxy-3a,4,9,10-tetrahydro-3H,8H-pyrrolo[1,2-c]purin-4-yl]methyl carbamate × 1 CAC CACODYLATE ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 27% MPD, STX:Saxiphilin molar ratio 1.1:1
Resolution 2.15 Å R-free 0.234
8D6T Rana catesbeiana saxiphilin mutant - Y558I:STX (co-crystal) Deposited 2022-06-06 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Mutation：Y558I 9SL [(3aS,4R,10aS)-2,6-diamino-10,10-dihydroxy-3a,4,9,10-tetrahydro-3H,8H-pyrrolo[1,2-c]purin-4-yl]methyl carbamate × 1 CAC CACODYLATE ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 27% MPD, STX:Saxiphilin molar ratio 1.1:1
Resolution 2.15 Å R-free 0.234
8D6U Rana catesbeiana saxiphilin:F-STX (soaked) Deposited 2022-06-06 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Not recorded QDX (2P)-4-({6-[({[(3aS,4R,7R,10aS)-2,6-diamino-10,10-dihydroxy-3a,4,9,10-tetrahydro-3H,8H-pyrrolo[1,2-c]purin-4-yl]methoxy}carbonyl)amino]hexyl}carbamoyl)-2-{[4aP,9(9a)P]-6-hydroxy-3-oxo-3H-xanthen-9-yl}benzoic acid × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；0.11-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD, 1 mM (final concentration) F-STX was added during soaking
Resolution 2.65 Å R-free 0.266
8D6U Rana catesbeiana saxiphilin:F-STX (soaked) Deposited 2022-06-06 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Not recorded QDX (2P)-4-({6-[({[(3aS,4R,7R,10aS)-2,6-diamino-10,10-dihydroxy-3a,4,9,10-tetrahydro-3H,8H-pyrrolo[1,2-c]purin-4-yl]methoxy}carbonyl)amino]hexyl}carbamoyl)-2-{[4aP,9(9a)P]-6-hydroxy-3-oxo-3H-xanthen-9-yl}benzoic acid × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；0.11-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD, 1 mM (final concentration) F-STX was added during soaking
Resolution 2.65 Å R-free 0.266
9YAR Rana catesbeiana saxiphilin:STX-C13-OBz (co-crystal) Deposited 2025-09-16 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Not recorded A1CTG [(2Z,3aS,4R,6Z,7R,10aS)-10,10-dihydroxy-2,6-diiminooctahydro-1H,8H-pyrrolo[1,2-c]purin-4-yl]methyl benzoate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 27% MPD, STX-C13-OBz:Saxiphilin molar ratio 1.1:1
Resolution 2.40 Å R-free 0.278
9YAR Rana catesbeiana saxiphilin:STX-C13-OBz (co-crystal) Deposited 2025-09-16 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Not recorded A1CTG [(2Z,3aS,4R,6Z,7R,10aS)-10,10-dihydroxy-2,6-diiminooctahydro-1H,8H-pyrrolo[1,2-c]purin-4-yl]methyl benzoate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 27% MPD, STX-C13-OBz:Saxiphilin molar ratio 1.1:1
Resolution 2.40 Å R-free 0.278
9YAS Rana catesbeiana saxiphilin mutant - Y558A:STX-C13-OBz (co-crystal) Deposited 2025-09-16 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Mutation：Y558A A1CTG [(2Z,3aS,4R,6Z,7R,10aS)-10,10-dihydroxy-2,6-diiminooctahydro-1H,8H-pyrrolo[1,2-c]purin-4-yl]methyl benzoate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD, STX-C13-OBz:Saxiphilin molar ratio 1.1:1
Resolution 2.45 Å R-free 0.284
9YAS Rana catesbeiana saxiphilin mutant - Y558A:STX-C13-OBz (co-crystal) Deposited 2025-09-16 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Mutation：Y558A A1CTG [(2Z,3aS,4R,6Z,7R,10aS)-10,10-dihydroxy-2,6-diiminooctahydro-1H,8H-pyrrolo[1,2-c]purin-4-yl]methyl benzoate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD, STX-C13-OBz:Saxiphilin molar ratio 1.1:1
Resolution 2.45 Å R-free 0.284
9YAT Rana catesbeiana saxiphilin mutant - T563A Deposited 2025-09-16 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Mutation：T563A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD
Resolution 2.50 Å R-free 0.246
9YAT Rana catesbeiana saxiphilin mutant - T563A Deposited 2025-09-16 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Mutation：T563A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD
Resolution 2.50 Å R-free 0.246
9YAV Rana catesbeiana saxiphilin mutant - F561A Deposited 2025-09-16 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Mutation：F561A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD
Resolution 2.23 Å R-free 0.244
9YAV Rana catesbeiana saxiphilin mutant - F561A Deposited 2025-09-16 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Mutation：F561A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD
Resolution 2.23 Å R-free 0.244
9YBD Rana catesbeiana saxiphilin mutant - F561A:STX-C13-OBz (co-crystal) Deposited 2025-09-17 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Mutation：F561A A1CTG [(2Z,3aS,4R,6Z,7R,10aS)-10,10-dihydroxy-2,6-diiminooctahydro-1H,8H-pyrrolo[1,2-c]purin-4-yl]methyl benzoate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD, STX-C13-OBz:Saxiphilin molar ratio 1.1:1
Resolution 2.40 Å R-free 0.258
9YBD Rana catesbeiana saxiphilin mutant - F561A:STX-C13-OBz (co-crystal) Deposited 2025-09-17 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Mutation：F561A A1CTG [(2Z,3aS,4R,6Z,7R,10aS)-10,10-dihydroxy-2,6-diiminooctahydro-1H,8H-pyrrolo[1,2-c]purin-4-yl]methyl benzoate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD, STX-C13-OBz:Saxiphilin molar ratio 1.1:1
Resolution 2.40 Å R-free 0.258
9YBE Rana catesbeiana saxiphilin mutant - F561A:STX (co-crystal) Deposited 2025-09-17 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Mutation：F561A 9SL [(3aS,4R,10aS)-2,6-diamino-10,10-dihydroxy-3a,4,9,10-tetrahydro-3H,8H-pyrrolo[1,2-c]purin-4-yl]methyl carbamate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD, STX:Saxiphilin molar ratio 1.1:1
Resolution 2.35 Å R-free 0.274
9YBE Rana catesbeiana saxiphilin mutant - F561A:STX (co-crystal) Deposited 2025-09-17 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Mutation：F561A 9SL [(3aS,4R,10aS)-2,6-diamino-10,10-dihydroxy-3a,4,9,10-tetrahydro-3H,8H-pyrrolo[1,2-c]purin-4-yl]methyl carbamate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD, STX:Saxiphilin molar ratio 1.1:1
Resolution 2.35 Å R-free 0.274
9YBF Rana catesbeiana saxiphilin mutant - T563A:STX-C13-OBz (co-crystal) Deposited 2025-09-17 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–844（844 aa）
Mutation：T563A A1CTG [(2Z,3aS,4R,6Z,7R,10aS)-10,10-dihydroxy-2,6-diiminooctahydro-1H,8H-pyrrolo[1,2-c]purin-4-yl]methyl benzoate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD, STX-C13-OBz:Saxiphilin molar ratio 1.1:1
Resolution 2.45 Å R-free 0.263
9YBF Rana catesbeiana saxiphilin mutant - T563A:STX-C13-OBz (co-crystal) Deposited 2025-09-17 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–844（844 aa）
Mutation：T563A A1CTG [(2Z,3aS,4R,6Z,7R,10aS)-10,10-dihydroxy-2,6-diiminooctahydro-1H,8H-pyrrolo[1,2-c]purin-4-yl]methyl benzoate × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277.15 K；0.08-0.2 M sodium cacodylate, pH 6.5, 5% PEG8000, 33% MPD, STX-C13-OBz:Saxiphilin molar ratio 1.1:1
Resolution 2.45 Å R-free 0.263

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.