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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：P04063 New Search
3PDB entries
4Biological assembly
4chain/assembly records
Main Difference Dimensions in This Set
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
1AMY CRYSTAL AND MOLECULAR STRUCTURE OF BARLEY ALPHA-AMYLASE Deposited 1994-03-10 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 25–427（403 aa）
Not recorded CA CALCIUM ION × 3 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.80 Å
1AVA AMY2/BASI PROTEIN-PROTEIN COMPLEX FROM BARLEY SEED Deposited 1997-09-15 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 25–427（403 aa）
Not recorded CA CALCIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.7；pH 6.7
Resolution 1.90 Å R-free 0.269
1AVA AMY2/BASI PROTEIN-PROTEIN COMPLEX FROM BARLEY SEED Deposited 1997-09-15 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 25–427（403 aa）
Not recorded CA CALCIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.7；pH 6.7
Resolution 1.90 Å R-free 0.269
1BG9 BARLEY ALPHA-AMYLASE WITH SUBSTRATE ANALOGUE ACARBOSE Deposited 1998-06-05 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 25–427（403 aa）
Not recorded CA CALCIUM ION × 6 AF1 4,6-dideoxy-4-{[(1S,4S,5S,6S)-4,5,6-trihydroxy-3-(hydroxymethyl)cyclohex-2-en-1-yl]amino}-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.7；pH 6.7
Resolution 2.80 Å R-free 0.249

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.