← Back to search

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：P16897 New Search
8PDB entries
8Biological assembly
12chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification 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
1G68 PSE-4 CARBENICILLINASE, WILD TYPE Deposited 2000-11-03 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 18–288（271 aa）
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；293 K；ammonium sulfate, MgCl2, MOPS, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.95 Å R-free 0.212
1G6A PSE-4 CARBENICILLINASE, R234K MUTANT Deposited 2000-11-03 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 18–288（271 aa）
Mutation：R234K SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；293 K；ammonium sulfate, sodium acetate, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.75 Å R-free 0.209
4ID4 Crystal structure of chimeric beta-lactamase cTEM-17m Deposited 2012-12-11 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 145–185（41 aa）
Not recorded CL CHLORIDE ION × 5 MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；295 K；26% PEG 4000, 0.25M magnesium chloride, 0.1M TrisHCl, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 1.05 Å R-free 0.138
4QY5 Crystal structures of chimeric beta-lactamase cTEM-19m showing different conformations Deposited 2014-07-23 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 63–64（2 aa）
Chain A 145–185（41 aa）
Not recorded CL CHLORIDE ION × 4 MG MAGNESIUM ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；295 K；30% PEG 4000, 0.2M magnesium chloride, 0.1M TrisHCl, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 295K
Resolution 1.50 Å R-free 0.161
4QY6 Crystal structures of chimeric beta-lactamase cTEM-19m showing different conformations Deposited 2014-07-23 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 63–64（2 aa）
Chain A 145–185（41 aa）
Not recorded CL CHLORIDE ION × 6 MG MAGNESIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；295 K；30% PEG 4000, 0.2M magnesium chloride, 0.1M TrisHCl, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 1.15 Å R-free 0.139
4R4R Crystal structure of chimeric beta-lactamase cTEM-19m at 1.2 angstrom resolution Deposited 2014-08-19 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 63–64（2 aa）
Chain A 145–185（41 aa）
Not recorded CL CHLORIDE ION × 4 MG MAGNESIUM ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；295 K；30% PEG 4000, 0.2M magnesium chloride, 0.1M TrisHCl, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 1.20 Å R-free 0.138
4R4S Crystal structure of chimeric beta-lactamase cTEM-19m at 1.1 angstrom resolution Deposited 2014-08-19 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 63–64（2 aa）
Chain A 145–185（41 aa）
Not recorded CL CHLORIDE ION × 5 MG MAGNESIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；295 K；30% PEG 4000, 0.2M magnesium chloride, 0.1M TrisHCl, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 1.10 Å R-free 0.128
8J6Y Crystal structure of class A beta-lactamase PSE-4 WT- Apo state Deposited 2023-04-26 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–288（288 aa）
Not recorded SO4 SULFATE ION × 16 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；2.5 M Ammonium sulfate, 0.1 M BIS-TRIS propane pH 7.0
Resolution 2.40 Å R-free 0.272

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.