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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：P18316 New Search
31PDB entries
31Biological assembly
31chain/assembly records
Main Difference Dimensions in This Set
Different mutation/modification 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
1A5K K217E VARIANT OF KLEBSIELLA AEROGENES UREASE Deposited 1998-02-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：K217E No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；PROTEIN WAS CRYSTALLIZED FROM 100 MM HEPES, PH 7.5, 1.6 M LI2SO4
Resolution 2.20 Å
1A5L K217C VARIANT OF KLEBSIELLA AEROGENES UREASE Deposited 1998-02-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：K217C, C319A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；PROTEIN WAS CRYSTALLIZED FROM 100 MM HEPES, PH 7.5, 1.6 M LI2SO4
Resolution 2.20 Å
1A5M K217A VARIANT OF KLEBSIELLA AEROGENES UREASE Deposited 1998-02-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：K217A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；PROTEIN WAS CRYSTALLIZED FROM 100 MM HEPES, PH 7.5, 1.6 M LI2SO4
Resolution 2.00 Å
1A5N K217A VARIANT OF KLEBSIELLA AEROGENES UREASE, CHEMICALLY RESCUED BY FORMATE AND NICKEL Deposited 1998-02-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：K217A NI NICKEL (II) ION × 6 FMT FORMIC ACID × 3 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.2；PROTEIN WAS CRYSTALLIZED FROM 100 MM HEPES, PH 7.5, 1.6 M LI2SO4; THEN CRYSTAL WAS SOAKED IN 100 MM HEPES, 500MM FORMATE, PH 7.2, 2.0 M LI2SO4, 1.5 MM NICL2
Resolution 2.40 Å
1A5O K217C VARIANT OF KLEBSIELLA AEROGENES UREASE, CHEMICALLY RESCUED BY FORMATE AND NICKEL Deposited 1998-02-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：K217C, C319A NI NICKEL (II) ION × 6 FMT FORMIC ACID × 3 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；PROTEIN WAS CRYSTALLIZED FROM 100 MM HEPES, PH 7.5, 1.6 M LI2SO4; THEN CRYSTAL WAS SOAKED IN 100 MM HEPES, 500MM FORMATE, PH 7.5, 2.0 M LI2SO4, 1.5 MM NICL2
Resolution 2.50 Å
1EF2 CRYSTAL STRUCTURE OF MANGANESE-SUBSTITUTED KLEBSIELLA AEROGENES UREASE Deposited 2000-02-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain C 1–100（100 aa）
Not recorded MN MANGANESE (II) ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；lithium sulfate, HEPES, EDTA, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.50 Å
1EJR CRYSTAL STRUCTURE OF THE D221A VARIANT OF KLEBSIELLA AEROGENES UREASE Deposited 2000-03-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded NI NICKEL (II) ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；lithium sulfate, Hepes, EDTA, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；lithium sulfate, Hepes, EDTA, formate, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.00 Å
1EJS Crystal Structure of the H219N Variant of Klebsiella Aerogenes Urease Deposited 2000-03-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded NI NICKEL (II) ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；lithium sulfate, Hepes, EDTA, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.00 Å
1EJT CRYSTAL STRUCTURE OF THE H219Q VARIANT OF KLEBSIELLA AEROGENES UREASE Deposited 2000-03-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded NI NICKEL (II) ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；lithium sulfate, Hepes, EDTA, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.00 Å
1EJU CRYSTAL STRUCTURE OF THE H320N VARIANT OF KLEBSIELLA AEROGENES UREASE Deposited 2000-03-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded NI NICKEL (II) ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；lithium sulfate, Hepes, EDTA, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.00 Å
1EJV CRYSTAL STRUCTURE OF THE H320Q VARIANT OF KLEBSIELLA AEROGENES UREASE Deposited 2000-03-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded NI NICKEL (II) ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；lithium sulfate, Hepes, EDTA, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.40 Å
1EJW CRYSTAL STRUCTURE OF WILD-TYPE KLEBSIELLA AEROGENES UREASE AT 298K Deposited 2000-03-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded NI NICKEL (II) ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；lithium sulfate, Hepes, EDTA, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.90 Å R-free 0.200
1EJX CRYSTAL STRUCTURE OF WILD-TYPE KLEBSIELLA AEROGENES UREASE AT 100K Deposited 2000-03-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded NI NICKEL (II) ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；lithium sulfate, Hepes, EDTA, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.60 Å R-free 0.240
1FWA KLEBSIELLA AEROGENES UREASE, C319A VARIANT AT PH 7.5 Deposited 1997-04-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：K(C 217)KCX, C(C 319)A NI NICKEL (II) ION × 6 CO3 CARBONATE ION × 3 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.00 Å
1FWB KLEBSIELLA AEROGENES UREASE, C319A VARIANT AT PH 6.5 Deposited 1997-04-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：C(C 319)A NI NICKEL (II) ION × 6 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.00 Å
1FWC KLEBSIELLA AEROGENES UREASE, C319A VARIANT AT PH 8.5 Deposited 1997-04-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：C(C 319)A NI NICKEL (II) ION × 6 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.00 Å
1FWD KLEBSIELLA AEROGENES UREASE, C319A VARIANT AT PH 9.4 Deposited 1997-04-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：C(C 319)A NI NICKEL (II) ION × 6 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.00 Å
1FWE KLEBSIELLA AEROGENES UREASE, C319A VARIANT WITH ACETOHYDROXAMIC ACID (AHA) BOUND Deposited 1997-04-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：C(C 319)A NI NICKEL (II) ION × 6 HAE ACETOHYDROXAMIC ACID × 3 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.00 Å
1FWF KLEBSIELLA AEROGENES UREASE, C319D VARIANT Deposited 1997-04-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：C(C 319)D NI NICKEL (II) ION × 6 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.00 Å
1FWG KLEBSIELLA AEROGENES UREASE, C319S VARIANT Deposited 1997-04-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：C(C 319)S NI NICKEL (II) ION × 6 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.00 Å
1FWH KLEBSIELLA AEROGENES UREASE, C319Y VARIANT Deposited 1997-04-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：C(C 319)Y NI NICKEL (II) ION × 6 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.00 Å
1FWI KLEBSIELLA AEROGENES UREASE, H134A VARIANT Deposited 1997-04-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：H(C 134)A NI NICKEL (II) ION × 3 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.00 Å
1FWJ KLEBSIELLA AEROGENES UREASE, NATIVE Deposited 1997-04-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded NI NICKEL (II) ION × 6 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.20 Å
1KRA CRYSTAL STRUCTURE OF KLEBSIELLA AEROGENES UREASE, ITS APOENZYME AND TWO ACTIVE SITE MUTANTS Deposited 1995-06-20 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.30 Å
1KRB CRYSTAL STRUCTURE OF KLEBSIELLA AEROGENES UREASE, ITS APOENZYME AND TWO ACTIVE SITE MUTANTS Deposited 1995-06-20 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：H(C 219)A NI NICKEL (II) ION × 6 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.50 Å
1KRC CRYSTAL STRUCTURE OF KLEBSIELLA AEROGENES UREASE, ITS APOENZYME AND TWO ACTIVE SITE MUTANTS Deposited 1995-06-20 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Mutation：H(C 320)A NI NICKEL (II) ION × 6 CO2 CARBON DIOXIDE × 3 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.50 Å
2KAU THE CRYSTAL STRUCTURE OF UREASE FROM KLEBSIELLA AEROGENES AT 2.2 ANGSTROMS RESOLUTION Deposited 1995-02-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded NI NICKEL (II) ION × 6 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.00 Å R-free 0.225
4EP8 Initial Urease Structure for Radiation Damage Experiment at 100 K Deposited 2012-04-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded NI NICKEL (II) ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；lithium sulfate, hepes, EDTA, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.55 Å R-free 0.196
4EPB Final Urease Structure for Radiation Damage Experiment at 100 K Deposited 2012-04-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded NI NICKEL (II) ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；lithium sulfate, hepes, EDTA, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.75 Å R-free 0.197
4EPD Initial Urease Structure for Radiation Damage Experiment at 300 K Deposited 2012-04-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded NI NICKEL (II) ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；lithium sulfate, hepes, EDTA, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.70 Å R-free 0.164
4EPE Final Urease Structure for Radiation Damage Experiment at 300 K Deposited 2012-04-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain A 1–100（100 aa）
Not recorded NI NICKEL (II) ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；lithium sulfate, hepes, EDTA, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.05 Å R-free 0.185

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.