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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：Q47066 New Search
25PDB entries
26Biological assembly
26chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification 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
1BZA BETA-LACTAMASE TOHO-1 FROM ESCHERICHIA COLI TUH12191 Deposited 1998-10-28 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 33–290（258 aa）
Mutation：E166A SO4 SULFATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 4.5；pH 4.5
Resolution 1.80 Å R-free 0.217
1IYO Toho-1 beta-Lactamase In Complex With Cefotaxime Deposited 2002-09-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 30–291（262 aa）
Mutation：E166A SO4 SULFATE ION × 3 CEF CEFOTAXIME, C3' cleaved, open, bound form × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；300 K；ammonium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Resolution 1.80 Å R-free 0.206
1IYP Toho-1 beta-Lactamase In Complex With Cephalothin Deposited 2002-09-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 30–291（262 aa）
Mutation：E166A SO4 SULFATE ION × 3 CEP CEPHALOTHIN GROUP × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；300 K；ammonium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Resolution 2.00 Å R-free 0.245
1IYQ Toho-1 beta-Lactamase In Complex With Benzylpenicillin Deposited 2002-09-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 30–291（262 aa）
Mutation：E166A SO4 SULFATE ION × 3 PNM OPEN FORM - PENICILLIN G × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；300 K；ammonium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Resolution 2.10 Å R-free 0.227
1IYS Crystal Structure of Class A beta-Lactamase Toho-1 Deposited 2002-09-06 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 31–291（261 aa）
Not recorded SO4 SULFATE ION × 8 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；298 K；ammonium sulfate, sodium acetate, acetate, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K
Resolution 1.65 Å R-free 0.197
1WE4 Crystal Structure of Class A beta-Lactamase Toho-1 G238C mutant Deposited 2004-05-24 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 30–291（262 aa）
Mutation：A26M, G238C SO4 SULFATE ION × 7 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；298 K；Ammonium sulfate, sodium acetate, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.70 Å R-free 0.222
2WYX Neutron structure of a class A Beta-lactamase Toho-1 E166A R274N R276N triple mutant Deposited 2009-11-20 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 33–288（256 aa） Fragment：RESIDUES 33-288
Mutation：YES No recorded non-water small molecule NEUTRON DIFFRACTION
X-ray crystallization conditions pH 6.5；pH 6.5
Resolution 2.10 Å R-free 0.258
2XQZ Neutron structure of the perdeuterated Toho-1 R274N R276N double mutant beta-lactamase Deposited 2010-09-08 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 32–291（260 aa） Fragment：RESIDUES 32-291
Mutation：YES No recorded non-water small molecule NEUTRON DIFFRACTION
X-ray crystallization conditions pH 6.5；pH 6.5
Resolution 2.10 Å R-free 0.259
2XR0 Room temperature X-ray structure of the perdeuterated Toho-1 R274N R276N double mutant beta-lactamase Deposited 2010-09-08 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 32–291（260 aa） Fragment：RESIDUES 32-291
Mutation：YES SO4 SULFATE ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.5；2.0 A AMMONIUM SULFATE, 0.1 M SODIUM CITRATE, PD 5.1. PREPARED IN 99.9% D2O AND MIXED 1:1 WITH PERDEUTERATED PROTEIN PREPARED IN 20 MM NA MES AT PD 6.1 (PH 6.5).
Resolution 2.20 Å R-free 0.173
2ZQ7 Apo structure of Class A beta-lactamase Toho-1 E166A/R274N/R276N triple mutant Deposited 2008-08-07 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 30–291（262 aa）
Mutation：E166A, R274N, R276N SO4 SULFATE ION × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；298 K；1.95-2.10M Ammonium sulfate, 0.2M sodium citrate, pH5.50, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 0.94 Å R-free 0.147
2ZQ8 Apo structure of class a beta-lactamase Toho-1 R274N/R276N double mutant Deposited 2008-08-07 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 30–291（262 aa）
Mutation：R274N, R276N SO4 SULFATE ION × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；298 K；1.95-2.10M ammonium sulfate, 0.2M sodium citrate, PH5.50, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.03 Å R-free 0.148
2ZQ9 Cephalothin acyl-intermediate structure of class a beta-lactamase Toho-1 E166A/R274N/R276N triple mutant Deposited 2008-08-07 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 30–291（262 aa）
Mutation：E166A, R274N, R276N SO4 SULFATE ION × 2 CEO 5-METHYLENE-2-[2-OXO-1-(2-THIOPHEN-2-YL-ACETYLAMINO)-ETHYL]-5,6-DIHYDRO-2H-[1,3]THIAZINE-4-CARBOXYLIC ACID × 1 CLS CEPHALOTHIN × 1 SPA THIOPHENEACETIC ACID × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；298 K；1.95-2.10M ammonium sulfate, 0.2M sodium citrate, PH5.50, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.07 Å R-free 0.146
2ZQA Cefotaxime acyl-intermediate structure of class a beta-lacta Toho-1 E166A/R274N/R276N triple mutant Deposited 2008-08-07 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 30–291（262 aa）
Mutation：E166A, R274N, R276N CEF CEFOTAXIME, C3' cleaved, open, bound form × 1 SO4 SULFATE ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；298 K；1.95-2.10M ammonium sulfate, 0.2M sodium citrate, PH5.50, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 0.95 Å R-free 0.145
2ZQC Aztreonam acyl-intermediate structure of class a beta-lactam Toho-1 E166A/R274N/R276N triple mutant Deposited 2008-08-07 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 30–291（262 aa）
Mutation：E166A, R274N, R276N SO4 SULFATE ION × 4 AZR 2-({[(1Z)-1-(2-amino-1,3-thiazol-4-yl)-2-oxo-2-{[(2S,3S)-1-oxo-3-(sulfoamino)butan-2-yl]amino}ethylidene]amino}oxy)-2-methylpropanoic acid × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；298 K；1.95-2.10M ammonium sulfate, 0.2M sodium citrate, PH5.50, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.07 Å R-free 0.146
2ZQD Ceftazidime acyl-intermediate structure of class a beta-lact Toho-1 E166A/R274N/R276N triple mutant Deposited 2008-08-07 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 30–291（262 aa）
Mutation：E166A, R274N, R276N SO4 SULFATE ION × 4 CAZ ACYLATED CEFTAZIDIME × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；298 K；1.95-2.10M Ammonium sulfate, 0.2M sodium citrate, PH5.50, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.19 Å R-free 0.159
4BD0 X-ray structure of a perdeuterated Toho-1 R274N R276N double mutant Beta-lactamase in complex with a fully deuterated boronic acid (BZB) Deposited 2012-10-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 31–291（261 aa） Fragment：RESIDUES 32-291
Mutation：YES BZB BENZO[B]THIOPHENE-2-BORONIC ACID × 1 SO4 SULFATE ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions 293 K；2.0 M AMMONIUM SULFATE AND 0.1 M SODIUM CITRATE PD 5.1 PREPARED IN 99.9 PERCENT D2O AT 20 C
Resolution 1.21 Å R-free 0.133
4BD1 Neutron structure of a perdeuterated Toho-1 R274N R276N double mutant Beta-lactamase in complex with a fully deuterated boronic acid (BZB) Deposited 2012-10-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 31–291（261 aa）
Mutation：YES BZB BENZO[B]THIOPHENE-2-BORONIC ACID × 1 NEUTRON DIFFRACTION
X-ray crystallization conditions pH 6.5；PH 6.5
Resolution 2.00 Å R-free 0.257
4C3Q Neutron structure of a perdeuterated Toho-1 R274N R276N double mutant Beta-lactamase in complex with a fully deuterated boronic acid (BZB) at 100K Deposited 2013-08-26 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 31–291（261 aa）
Mutation：YES BZB BENZO[B]THIOPHENE-2-BORONIC ACID × 1 NEUTRON DIFFRACTION
X-ray crystallization conditions pH 5.6；PH 5.6
Resolution 2.20 Å R-free 0.240
4X69 Crystal structure of OP0595 complexed with CTX-M-44 Deposited 2014-12-07 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 30–291（262 aa）
Not recorded OP0 (2S,5R)-N-(2-aminoethoxy)-1-formyl-5-[(sulfooxy)amino]piperidine-2-carboxamide × 1 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8；293 K；PEG 6000
Resolution 1.42 Å R-free 0.208
4X69 Crystal structure of OP0595 complexed with CTX-M-44 Deposited 2014-12-07 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 30–291（262 aa）
Not recorded OP0 (2S,5R)-N-(2-aminoethoxy)-1-formyl-5-[(sulfooxy)amino]piperidine-2-carboxamide × 1 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8；293 K；PEG 6000
Resolution 1.42 Å R-free 0.208
5A91 15K X-ray ligand free: Exploring the Mechanism of beta-Lactam Ring Protonation in the Class A beta-lactamase Acylation Mechanism Using Neutron and X-ray Crystallography Deposited 2015-07-17 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 30–291（262 aa）
Mutation：YES SO4 SULFATE ION × 5 X-RAY DIFFRACTION
X-ray crystallization conditions 293 K；300 ul of a 10 mg/ml protein concentration in a solution containing 2.0 M ammonium sulfate and 0.1 M sodium citrate (pH 6.1) prepared in D 2 O.
Resolution 1.20 Å R-free 0.150
5KMW TOHO1 Beta lactamase mutant E166A/R274N/R276N -benzyl penicillin complex Deposited 2016-06-27 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 33–288（256 aa）
Mutation：E165A, R271N, R273N SO4 SULFATE ION × 5 PNM OPEN FORM - PENICILLIN G × 1 PNN PENICILLIN G × 2 X-RAY DIFFRACTION
X-ray crystallization conditions BATCH MODE；pH 6.1；293.15 K；30 microliters of 10 mg/ml protein concentration was added to a solution containing 2.0 M ammonium sulfate and 0.1 M sodium citrate (pH 6.1). For ligand soaking, crystals were placed for 2-3 h in a reservoir solution containing 2.7 M ammonium sulfate, 0.1 M sodium citrate (pH 6.1), and 5.0 mM benzyl penicillin. The crystals were then placed momentarily in a reservoir solution containing a cryoprotectant (30% w/v trehalose) and subsequently flash-frozen in liquid nitrogen
Resolution 1.10 Å R-free 0.170
5KSC E166A/R274N/R276N Toho-1 Beta-lactamase aztreonam acyl-enzyme intermediate Deposited 2016-07-08 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 31–291（261 aa）
Mutation：E169A, R275N, R277N AZR 2-({[(1Z)-1-(2-amino-1,3-thiazol-4-yl)-2-oxo-2-{[(2S,3S)-1-oxo-3-(sulfoamino)butan-2-yl]amino}ethylidene]amino}oxy)-2-methylpropanoic acid × 1 NEUTRON DIFFRACTION
X-ray crystallization conditions BATCH MODE；pH 6.1；293.15 K；300 microliters of a 10 mg/ml protein concentration in a solution containing 2.0 M ammonium sulfate and 0.1 M sodium citrate (pH 6.1) prepared in D2O.
Resolution 2.10 Å R-free 0.280
6C78 Substrate Binding Induces Conformational Changes In A Class A Beta Lactamase That Primes It For Catalysis Deposited 2018-01-22 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 32–291（260 aa） Fragment：RESIDUES 32-291
Not recorded No recorded non-water small molecule NEUTRON DIFFRACTION
X-ray crystallization conditions BATCH MODE；pH 6.1；293 K；300 MICROLITERS OF A 10 MG/ML PROTEIN CONCENTRATION IN A SOLUTION CONTAINING 2.0 M AMMONIUM SULFATE AND 0.1 M PREPARED IN D2O, PH 6.1, BATCH MODE, TEMPERATURE 293K
Resolution 1.75 Å
6C79 Conformational Changes in a Class A Beta lactamase that Prime it for Catalysis Deposited 2018-01-22 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 32–291（260 aa） Fragment：residues 32-291
Not recorded CE3 (6R,7R)-3-(acetyloxymethyl)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyimino-ethanoyl]amino]-8-oxo-5-thia-1-azabicy clo[4.2.0]oct-2-ene-2-carboxylic acid × 1 SO4 SULFATE ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions BATCH MODE；pH 6.1；293 K；10 mg/ml protein in a solution containing 2.0 M ammonium sulfate and 0.1 M sodium citrate (pH 6.1)
Resolution 1.10 Å R-free 0.164
6C7A Conformational Changes in a Class A Beta lactamase that Prime it for Catalysis Deposited 2018-01-22 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 32–291（260 aa） Fragment：residues 32-291
Not recorded SO4 SULFATE ION × 9 X-RAY DIFFRACTION
X-ray crystallization conditions BATCH MODE；pH 6.1；293 K；10 mg/ml protein in a solution containing 2.0 M ammonium sulfate and 0.1 M sodium citrate (pH 6.1)
Resolution 1.05 Å R-free 0.150

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.