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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：P02873 New Search
2PDB entries
3Biological assembly
3chain/assembly records
Main Difference Dimensions in This Set
Different construct 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
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 B 24–246（223 aa）
Not recorded 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
1VIW TENEBRIO MOLITOR ALPHA-AMYLASE-INHIBITOR COMPLEX Deposited 1998-07-21 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 24–228（205 aa）
Not recorded CL CHLORIDE ION × 2 CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；pH 7
Resolution 3.00 Å R-free 0.291
1VIW TENEBRIO MOLITOR ALPHA-AMYLASE-INHIBITOR COMPLEX Deposited 1998-07-21 Assembly 2 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 24–228（205 aa）
Not recorded CL CHLORIDE ION × 1 CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；pH 7
Resolution 3.00 Å R-free 0.291

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.