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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：P55157 New Search
2PDB entries
3Biological assembly
3chain/assembly records
Main Difference Dimensions in This Set
Different construct 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
6I7S Microsomal triglyceride transfer protein Deposited 2018-11-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain G 19–894（876 aa）
Not recorded CA CALCIUM ION × 1 EDO 1,2-ETHANEDIOL × 11 PGE TRIETHYLENE GLYCOL × 1 SO4 SULFATE ION × 7 PEG DI(HYDROXYETHYL)ETHER × 2 PE5 3,6,9,12,15,18,21,24-OCTAOXAHEXACOSAN-1-OL × 1 TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；277 K；0.1 M Tris pH 8.25, 0.2 M Li2SO4, 32% v/v PEG 400, 2% Polypropylene glycol P425
Resolution 2.50 Å R-free 0.257
6I7S Microsomal triglyceride transfer protein Deposited 2018-11-17 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain H 19–894（876 aa）
Not recorded CA CALCIUM ION × 1 EDO 1,2-ETHANEDIOL × 8 PGE TRIETHYLENE GLYCOL × 5 SO4 SULFATE ION × 4 PEG DI(HYDROXYETHYL)ETHER × 7 PE5 3,6,9,12,15,18,21,24-OCTAOXAHEXACOSAN-1-OL × 1 PE4 2-{2-[2-(2-{2-[2-(2-ETHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHOXY]-ETHOXY}-ETHANOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；277 K；0.1 M Tris pH 8.25, 0.2 M Li2SO4, 32% v/v PEG 400, 2% Polypropylene glycol P425
Resolution 2.50 Å R-free 0.257
8EOJ Microsomal triglyceride transfer protein Deposited 2022-10-03 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–894（894 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.07 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.