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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：Q13477 New Search
7PDB entries
11Biological assembly
12chain/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
1BQS THE CRYSTAL STRUCTURE OF MUCOSAL ADDRESSIN CELL ADHESION MOLECULE-1 (MADCAM-1) Deposited 1998-08-18 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 23–231（209 aa） Fragment：EXTRACELLULAR REGION WITH TWO IG-LIKE DOMAINS
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；PROTEIN SOLUTION:17 MG/ML. CRYSTALLIZATION SOLUTION: 10% PEG 400, 0.5M LI2SO4, PH 7.5-8.0., VAPOR DIFFUSION, HANGING DROP
Resolution 2.20 Å R-free 0.280
1GSM A reassessment of the MAdCAM-1 structure and its role in integrin recognition. Deposited 2002-01-08 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 19–224（206 aa） Fragment：EXTRACELLULAR REGION WITH TWO IG-LIKE DOMAINS
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；PROTEIN SOLUTION:10 MG/ML. CRYSTALLIZATION SOLUTION: 16% PEG 4000, 0.5M LI2SO4, PH 7.75.
Resolution 1.90 Å R-free 0.250
4HBQ Crystal structure of a loop deleted mutant of Human MAdCAM-1 D1D2 Deposited 2012-09-28 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 23–224（202 aa）
Not recorded SO4 SULFATE ION × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；0.1 M Tris pH 8.5, 0.2 M (NH4)2SO4, 12% polyethylene glycol (PEG) 8000, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.40 Å R-free 0.178
4HBQ Crystal structure of a loop deleted mutant of Human MAdCAM-1 D1D2 Deposited 2012-09-28 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 23–224（202 aa）
Not recorded SO4 SULFATE ION × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；0.1 M Tris pH 8.5, 0.2 M (NH4)2SO4, 12% polyethylene glycol (PEG) 8000, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.40 Å R-free 0.178
4HBQ Crystal structure of a loop deleted mutant of Human MAdCAM-1 D1D2 Deposited 2012-09-28 Assembly 3 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 23–224（202 aa）
Chain B 23–224（202 aa）
Not recorded SO4 SULFATE ION × 2 GOL GLYCEROL × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；0.1 M Tris pH 8.5, 0.2 M (NH4)2SO4, 12% polyethylene glycol (PEG) 8000, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.40 Å R-free 0.178
4HC1 Crystal structure of a loop deleted mutant of human MAdCAM-1 D1D2 complexed with Fab 10G3 Deposited 2012-09-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 23–224（202 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；0.1 M Tris pH 7.0, 10% (w/v) PEG monomethyl ether (PEGMME) 2000, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.87 Å R-free 0.253
4HC1 Crystal structure of a loop deleted mutant of human MAdCAM-1 D1D2 complexed with Fab 10G3 Deposited 2012-09-28 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 23–224（202 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；0.1 M Tris pH 7.0, 10% (w/v) PEG monomethyl ether (PEGMME) 2000, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.87 Å R-free 0.253
4HCR Crystal structure of human MAdCAM-1 D1D2 complexed with Fab PF-547659 Deposited 2012-10-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 23–225（203 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；293 K；0.1 M Citrate pH 6.0, 18% (w/v) PEG 3350, 12% (w/v) myo-inositol, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.30 Å R-free 0.208
4HCR Crystal structure of human MAdCAM-1 D1D2 complexed with Fab PF-547659 Deposited 2012-10-01 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 23–225（203 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；293 K；0.1 M Citrate pH 6.0, 18% (w/v) PEG 3350, 12% (w/v) myo-inositol, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.30 Å R-free 0.208
4HD9 Crystal structure of native human MAdCAM-1 D1D2 domain Deposited 2012-10-02 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 23–225（203 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；293 K；10% PEG4K, 0.5M Li2SO4, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.70 Å R-free 0.214
9P95 CryoEM structure of integrin alpha4beta7 bound to MAdCAM-1 Deposited 2025-06-24 Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 1–317（317 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 CA CALCIUM ION × 3 MN MANGANESE (II) ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；0.05% CHAPS added immediately before vitrification
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.05 Å

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.