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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：P00709 New Search
7PDB entries
8Biological assembly
9chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification 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
1A4V ALPHA-LACTALBUMIN Deposited 1998-02-05 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 20–142（123 aa） Fragment：CALCIUM-BINDING REGION
Not recorded CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；pH 7.5
Resolution 1.80 Å R-free 0.263
1B9O HUMAN ALPHA-LACTALBUMIN, LOW TEMPERATURE FORM Deposited 1999-02-14 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–123（123 aa）
Not recorded CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 4.2；pH 4.2
Resolution 1.15 Å R-free 0.162
1CB3 LOCAL INTERACTIONS DRIVE THE FORMATION OF NON-NATIVE STRUCTURE IN THE DENATURED STATE OF HUMAN ALPHA-LACTALBUMIN: A HIGH RESOLUTION STRUCTURAL CHARACTERIZATION OF A PEPTIDE MODEL IN AQUEOUS SOLUTION Deposited 1999-02-26 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 120–130（11 aa）
Mutation：C11A Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 2.8；283 K；Pressure 1
Resolution not provided
1HML ALPHA_LACTALBUMIN POSSESSES A DISTINCT ZINC BINDING SITE Deposited 1994-09-29 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–142（142 aa）
Not recorded CA CALCIUM ION × 1 ZN ZINC ION × 1 SO4 SULFATE ION × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.70 Å
3B0I Crystal structure of recombinant human alpha lactalbumin Deposited 2011-06-10 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 20–142（123 aa）
Not recorded CA CALCIUM ION × 1 SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；293 K；2.0M ammonium sulfate, 0.01M CaCl2, 0.1M MES, 28mg/ml protein, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.80 Å R-free 0.256
3B0O Crystal structure of alpha-lactalbumin Deposited 2011-06-10 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 21–142（122 aa）
Not recorded CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.7；293 K；1.8M ammonium sulphate, 10mM CaCl2, 0.1M Tris-HCl, 40mg/ml protein, pH 7.7, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.61 Å R-free 0.193
3B0O Crystal structure of alpha-lactalbumin Deposited 2011-06-10 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 21–142（122 aa）
Not recorded CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.7；293 K；1.8M ammonium sulphate, 10mM CaCl2, 0.1M Tris-HCl, 40mg/ml protein, pH 7.7, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.61 Å R-free 0.193
4L41 Human Lactose synthase: A 2:1 complex between human alpha-lactalbumin and human beta1,4-galactosyltransferase Deposited 2013-06-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 19–142（124 aa） Fragment：UNP residues 19-142
Chain B 19–142（124 aa） Fragment：UNP residues 19-142
Not recorded CA CALCIUM ION × 2 SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；298 K；100 mM mes buffer pH 7.0, 12% PEG 4000, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.70 Å R-free 0.237

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.