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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：P80403 New Search
3PDB entries
3Biological assembly
3chain/assembly records
Main Difference Dimensions in This Set
Different assembly state Different ligand/ion Different experimental method 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
1CLV YELLOW MEAL WORM ALPHA-AMYLASE IN COMPLEX WITH THE AMARANTH ALPHA-AMYLASE INHIBITOR Deposited 1999-05-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain I 1–32（32 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 5.4；12% PEG 1000, 12% PEG 8000, pH 5.4
Resolution 2.00 Å R-free 0.190
1HTX SOLUTION STRUCTURE OF THE MAIN ALPHA-AMYLASE INHIBITOR FROM AMARANTH SEEDS Deposited 2001-01-02 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–32（32 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 2.95；277 K；Pressure ambient
NMR measurement conditions pH 2.95；277 K；Pressure ambient
NMR sample composition 1.8 mM AAI, 0.05 mM NaN3 | 90% H2O/10% D2O
NMR sample composition 1.8 mM AAI, 0.05 mM NaN3 | 100% D2O
Resolution not provided
1QFD NMR SOLUTION STRUCTURE OF ALPHA-AMYLASE INHIBITOR (AAI) Deposited 1999-04-08 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–32（32 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.5；300 K；Ionic strength (raw mmCIF value) 20 mM；Pressure 1
NMR sample composition 90% WATER/10% D2O
Resolution not provided

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.