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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：P00690 New Search
17PDB entries
23Biological assembly
23chain/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
1BVN PIG PANCREATIC ALPHA-AMYLASE IN COMPLEX WITH THE PROTEINACEOUS INHIBITOR TENDAMISTAT Deposited 1998-09-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain P 1–496（496 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；PROTEIN: 12 MG/ML IN 50 MM TRIS/HCL, PH 8.0, MIXED 5:1 WITH 40% (W/V) PEG 1000; RESERVOIR: 0.18-0.20 M SODIUM PHOSPHATE, PH 8.0 HARVESTED IN: 3 M SODIUM ACETATE, PH 7.5
Resolution 2.50 Å R-free 0.260
1DHK STRUCTURE OF PORCINE PANCREATIC ALPHA-AMYLASE Deposited 1996-10-14 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 2–496（495 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 6 CL CHLORIDE ION × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.85 Å R-free 0.220
1HX0 Structure of pig pancreatic alpha-amylase complexed with the "truncate" acarbose molecule (pseudotrisaccharide) Deposited 2001-01-11 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 16–511（496 aa）
Mutation：Q16PCA Non-standard monomer：Yes (specific site not provided by mmCIF) CL CHLORIDE ION × 4 CA CALCIUM ION × 1 EDO 1,2-ETHANEDIOL × 12 X-RAY DIFFRACTION
X-ray crystallization conditions batch；pH 8.5；277 K；CaCl2, pH 8.5, batch, temperature 277K
Resolution 1.38 Å R-free 0.130
1JFH STRUCTURE OF A PANCREATIC ALPHA-AMYLASE BOUND TO A SUBSTRATE ANALOGUE AT 2.03 ANGSTROM RESOLUTION Deposited 1997-09-19 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 2–496（495 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) CL CHLORIDE ION × 1 HG MERCURY (II) ION × 1 CA CALCIUM ION × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.03 Å R-free 0.185
1KXQ Camelid VHH Domain in Complex with Porcine Pancreatic alpha-Amylase Deposited 2002-02-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–496（496 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；Phosphate buffer 0.8 M, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.60 Å R-free 0.219
1KXQ Camelid VHH Domain in Complex with Porcine Pancreatic alpha-Amylase Deposited 2002-02-01 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–496（496 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；Phosphate buffer 0.8 M, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.60 Å R-free 0.219
1KXQ Camelid VHH Domain in Complex with Porcine Pancreatic alpha-Amylase Deposited 2002-02-01 Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 1–496（496 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；Phosphate buffer 0.8 M, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.60 Å R-free 0.219
1KXQ Camelid VHH Domain in Complex with Porcine Pancreatic alpha-Amylase Deposited 2002-02-01 Assembly 4 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 1–496（496 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；Phosphate buffer 0.8 M, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.60 Å R-free 0.219
1KXT Camelid VHH Domains in Complex with Porcine Pancreatic alpha-Amylase Deposited 2002-02-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–496（496 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；293 K；PEG 20000 15%, Malate imidazole 0.2M, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.00 Å R-free 0.236
1KXT Camelid VHH Domains in Complex with Porcine Pancreatic alpha-Amylase Deposited 2002-02-01 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 1–496（496 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；293 K；PEG 20000 15%, Malate imidazole 0.2M, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.00 Å R-free 0.236
1KXT Camelid VHH Domains in Complex with Porcine Pancreatic alpha-Amylase Deposited 2002-02-01 Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 1–496（496 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；293 K；PEG 20000 15%, Malate imidazole 0.2M, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.00 Å R-free 0.236
1KXV Camelid VHH Domains in Complex with Porcine Pancreatic alpha-Amylase Deposited 2002-02-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–496（496 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5；293 K；PEG4000 32%, Na citrate 0.1M & Ammonium Acetate 0.2M, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.60 Å R-free 0.229
1KXV Camelid VHH Domains in Complex with Porcine Pancreatic alpha-Amylase Deposited 2002-02-01 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–496（496 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5；293 K；PEG4000 32%, Na citrate 0.1M & Ammonium Acetate 0.2M, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.60 Å R-free 0.229
1OSE Porcine pancreatic alpha-amylase complexed with acarbose Deposited 1996-03-20 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 2–496（495 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) BGC beta-D-glucopyranose × 1 CL CHLORIDE ION × 1 CA CALCIUM ION × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.30 Å R-free 0.222
1PIF PIG ALPHA-AMYLASE Deposited 1996-06-15 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 17–511（495 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6；pH 6.0
Resolution 2.30 Å R-free 0.208
1PIG PIG PANCREATIC ALPHA-AMYLASE COMPLEXED WITH THE OLIGOSACCHARIDE V-1532 Deposited 1996-06-15 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 2–496（495 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) HMC 5-HYDROXYMETHYL-CHONDURITOL × 1 BGC beta-D-glucopyranose × 1 CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6；VAPOR DIFFUSION; 10 MICROLITER OF PROTEIN (15 MG/ML IN 0.1 M AMMONIUM CACODYLATE, PH 10.0 0.001 M V-1532) WERE STEPWISE CONCENTRATED OVER 0.1, 0.15, AND 0.25 M AMMONIUM CACODYLATE, PH 6.0., vapor diffusion
Resolution 2.20 Å R-free 0.210
1PPI THE ACTIVE CENTER OF A MAMMALIAN ALPHA-AMYLASE. THE STRUCTURE OF THE COMPLEX OF A PANCREATIC ALPHA-AMYLASE WITH A CARBOHYDRATE INHIBITOR REFINED TO 2.2 ANGSTROMS RESOLUTION Deposited 1994-02-22 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–496（496 aa）
Not recorded CL CHLORIDE ION × 1 CA CALCIUM ION × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.20 Å
1UA3 Crystal structure of the pig pancreatic a-amylase complexed with malto-oligosaccharides Deposited 2003-02-27 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–496（496 aa）
Not recorded CL CHLORIDE ION × 2 CA CALCIUM ION × 1 BGC beta-D-glucopyranose × 1 EDO 1,2-ETHANEDIOL × 6 X-RAY DIFFRACTION
X-ray crystallization conditions LIQUID DIFFUSION；pH 8；277 K；Sodium chloride, Calsium chloride, pH 8.0, LIQUID DIFFUSION, temperature 277K
Resolution 2.01 Å R-free 0.196
1VAH Crystal structure of the pig pancreatic-amylase complexed with r-nitrophenyl-a-D-maltoside Deposited 2004-02-17 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 16–511（496 aa）
Not recorded CL CHLORIDE ION × 1 CA CALCIUM ION × 1 NPO P-NITROPHENOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions LIQUID DIFFUSION；pH 8；295 K；SODIUM CHLORIDE, CALSIUM CHLORIDE, pH 8.0, LIQUID DIFFUSION, temperature 295K
Resolution 2.40 Å R-free 0.233
1WO2 Crystal structure of the pig pancreatic alpha-amylase complexed with malto-oligosaacharides under the effect of the chloride ion Deposited 2004-08-11 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 16–511（496 aa）
Mutation：Q16PCA Non-standard monomer：Yes (specific site not provided by mmCIF) CL CHLORIDE ION × 1 CA CALCIUM ION × 1 EDO 1,2-ETHANEDIOL × 6 X-RAY DIFFRACTION
X-ray crystallization conditions EVAPORATION；pH 8；277 K；Tris, Calcium chloride, Sodium chloride, pH 8, EVAPORATION, temperature 277K
Resolution 2.01 Å R-free 0.184
3L2L X-ray Crystallographic Analysis of Pig Pancreatic Alpha-Amylase with Limit Dextrin and Oligosaccharide Deposited 2009-12-15 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 16–511（496 aa） Fragment：residues 16-511
Non-standard monomer：Yes (specific site not provided by mmCIF) GLC alpha-D-glucopyranose × 1 CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions EVAPORATION；pH 6.75；298 K；0.010 M cacodylate, 0.002 M calcium chloride, pH 6.75, EVAPORATION, temperature 298K
Resolution 2.11 Å R-free 0.157
3L2M X-ray Crystallographic Analysis of Pig Pancreatic Alpha-Amylase with Alpha-cyclodextrin Deposited 2009-12-15 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 16–511（496 aa） Fragment：residues 16-511
Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions EVAPORATION；pH 6.75；298 K；0.010 M cacodylate, 0.002 M calcium chloride, soaking of alpha-cyclodextrin, pH 6.75, EVAPORATION, temperature 298K
Resolution 1.97 Å R-free 0.160
4X0N Porcine pancreatic alpha-amylase in complex with helianthamide, a novel proteinaceous inhibitor Deposited 2014-11-21 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 16–511（496 aa） Fragment：UNP residues 16-511
Non-standard monomer：Yes (specific site not provided by mmCIF) CL CHLORIDE ION × 1 CA CALCIUM ION × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；300 K；100 mM Tris, 8% PEG 8000
Resolution 2.60 Å R-free 0.226

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.