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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：P31554 New Search
11PDB entries
13Biological assembly
13chain/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
4RHB Crystal structure of the lipopolysaccharide assembly complex LptD-LptE from the Escherichia coli outer membrane Deposited 2014-10-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 203–784（582 aa）
Not recorded CL CHLORIDE ION × 1 NA SODIUM ION × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 3.35 Å R-free 0.338
4RHB Crystal structure of the lipopolysaccharide assembly complex LptD-LptE from the Escherichia coli outer membrane Deposited 2014-10-01 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 203–784（582 aa）
Not recorded CL CHLORIDE ION × 3 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 3.35 Å R-free 0.338
9FZ5 Cryo-EM structure of LptDE-YedD complex from Escherichia Coli Deposited 2024-07-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 26–784（759 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE；Blot 3-4 seconds
Resolution 3.57 Å
9I9Z LpDE from Escherichia coli Deposited 2025-02-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–784（784 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.74 Å
9IA0 LpDE from Escherichia coli Deposited 2025-02-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–784（784 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.62 Å
9IA2 LpDEM from Escherichia coli Deposited 2025-02-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 1–784（784 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.47 Å
9IA5 LpDEM from Escherichia coli Deposited 2025-02-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 1–784（784 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.63 Å
9KN3 Cryo-EM structure of LptDEM complex from Escherichia coli Deposited 2024-11-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 25–784（760 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.27 Å
9P1U beta-barrel assembly machine from Escherichia coli in an late state of LptD assembly Deposited 2025-06-10 Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain F 1–784（784 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
9RPR Cryo-EM structure of LptDEM complex containing Shigella flexneri LptE and endogenous E. coli LptD and LptM Deposited 2025-06-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 1–784（784 aa）
Not recorded PLM PALMITIC ACID × 1 PXS (2S)-propane-1,2-diyl dihexadecanoate × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；10mM HEPES, pH7.5, 100mM NaCl, 0.05% (w/v) DDM
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.78 Å
9Y0P Crystal structure of Escherichia coli DsbA C33A mutant in complex with a peptide derived from LptD - Binding mode I Deposited 2025-08-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 26–37（12 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) GOL GLYCEROL × 1 NO3 NITRATE ION × 3 SO4 SULFATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；0.2 M Calcium acetate hydrate, 20% w/v Polyethylene glycol 3,350
Resolution 1.47 Å R-free 0.210
9Y0P Crystal structure of Escherichia coli DsbA C33A mutant in complex with a peptide derived from LptD - Binding mode I Deposited 2025-08-28 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 26–37（12 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) GOL GLYCEROL × 1 NO3 NITRATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；0.2 M Calcium acetate hydrate, 20% w/v Polyethylene glycol 3,350
Resolution 1.47 Å R-free 0.210
9Y0Q Crystal structure of Escherichia coli DsbA C33A mutant in complex with a peptide derived from LptD - Binding mode II Deposited 2025-08-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 26–37（12 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；0.2 M Magnesium nitrate hexahydrate, 20% w/v Polyethylene glycol 3,350
Resolution 1.47 Å R-free 0.213

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.