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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：P0A8U6 New Search
10PDB entries
11Biological assembly
30chain/assembly records
Main Difference Dimensions in This Set
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
1CMA MET REPRESSOR/DNA COMPLEX + S-ADENOSYL-METHIONINE Deposited 1992-08-24 Assembly 1 Protein–DNA Homooligomer；Protein × 4 PDB declaration: octameric（8） Consistent with all polymers
Chain A 1–104（104 aa）
Chain B 1–104（104 aa）
Not recorded SAM S-ADENOSYLMETHIONINE × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；pH 7.00, VAPOR DIFFUSION, HANGING DROP
Resolution 2.80 Å
1CMB THREE DIMENSIONAL CRYSTAL STRUCTURES OF ESCHERICHIA COLI MET REPRESSOR WITH AND WITHOUT COREPRESSOR Deposited 1992-08-28 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–104（104 aa）
Chain B 1–104（104 aa）
Not recorded PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.80 Å
1CMC THREE DIMENSIONAL CRYSTAL STRUCTURES OF E. COLI MET REPRESSOR WITH AND WITHOUT COREPRESSOR Deposited 1992-08-28 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–104（104 aa）
Chain B 1–104（104 aa）
Not recorded MG MAGNESIUM ION × 2 SAM S-ADENOSYLMETHIONINE × 2 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.80 Å
1MJ2 METHIONINE REPRESSOR MUTANT (Q44K) PLUS COREPRESSOR (S-ADENOSYL METHIONINE) COMPLEXED TO A CONSENSUS OPERATOR SEQUENCE Deposited 1998-01-27 Assembly 1 Protein–DNA Homooligomer；Protein × 4 PDB declaration: hexameric（6） Consistent with all polymers
Chain A 1–104（104 aa）
Chain B 1–104（104 aa）
Chain C 1–104（104 aa）
Chain D 1–104（104 aa）
Mutation：Q44K Mutation：Q44K Mutation：Q44K Mutation：Q44K SAM S-ADENOSYLMETHIONINE × 4 CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；pH 7.0, VAPOR DIFFUSION, HANGING DROP
Resolution 2.40 Å R-free 0.260
1MJK METHIONINE REPRESSOR MUTANT APOREPRESSOR (Q44K) FROM ESCHERICHIA COLI Deposited 1998-01-16 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–104（104 aa）
Chain B 1–104（104 aa）
Mutation：Q44K Mutation：Q44K PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；PROTEIN WAS CRYSTALLIZED FROM 16-28% PEG 600, 1.5% NAIO4, 100MM POTASSIUM PHOSPHATE BUFFER, PH 7.0.
Resolution 2.15 Å R-free 0.223
1MJL METHIONINE REPRESSOR MUTANT (Q44K) COMPLEX WITH THE COREPRESSOR SAM (S-ADENOSYL METHIONINE) FROM ESCHERICHIA COLI Deposited 1998-01-26 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–104（104 aa）
Chain B 1–104（104 aa）
Mutation：Q44K Mutation：Q44K SAM S-ADENOSYLMETHIONINE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；PROTEIN (10MG/ML) + SAM (1MG/ ML) WAS CRYSTALLIZED FROM 10-30% PEG 600, 100MM SODIUM CACODYLATE BUFFER, PH 4.6-5.2., pH 7.0
Resolution 2.10 Å R-free 0.197
1MJM METHIONINE APOREPRESSOR MUTANT (Q44K) COMPLEXED TO HALF OF THE CONSENSUS OPERATOR SEQUENCE Deposited 1998-01-30 Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric（4） Consistent with all polymers
Chain A 1–104（104 aa）
Chain B 1–104（104 aa）
Mutation：Q44K Mutation：Q44K No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；PROTEIN (10MG/ML) + DNA (3.8MG/ML) WAS CRYSTALLISED FROM 8-14% P4000, 100MM CITRATE BUFFER, PH 5.0-6.0, 20% GLYCEROL, pH 7.0
Resolution 2.20 Å R-free 0.282
1MJO METHIONINE HOLOREPRESSOR MUTANT (Q44K) PLUS COREPRESSOR (S-ADENOSYL METHIONINE) COMPLEXED TO THE MINIMAL MET CONSENSUS OPERATOR WITH THE CENTRAL TA STEP MUTATED TO AT Deposited 1998-01-28 Assembly 1 Protein–DNA Homooligomer；Protein × 4 PDB declaration: hexameric（6） Consistent with all polymers
Chain A 1–104（104 aa）
Chain B 1–104（104 aa）
Chain C 1–104（104 aa）
Chain D 1–104（104 aa）
Mutation：Q44K Mutation：Q44K Mutation：Q44K Mutation：Q44K SAM S-ADENOSYLMETHIONINE × 4 CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；PROTEIN (10MG/ML) + SAM (1MG/ML) + DNA (4MG/ML) WAS CRYSTALLISED FROM 28-38% MPD, 100MM SODIUM CACODYLATE BUFFER, PH 6.0-7.0
Resolution 2.10 Å R-free 0.241
1MJP METHIONINE APOREPRESSOR MUTANT (Q44K) COMPLEXED TO THE MINIMAL MET CONSENSUS OPERATOR Deposited 1998-01-29 Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric（4） Consistent with all polymers
Chain A 1–104（104 aa）
Chain B 1–104（104 aa）
Mutation：Q44K Mutation：Q44K No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；PROTEIN (10MG/ML) + DNA (4MG/ML) WAS CRYSTALLISED FROM 40% MPD, 100MM SODIUM CACODYLATE BUFFER, PH 7.0.
Resolution 3.40 Å R-free 0.309
1MJQ METHIONINE REPRESSOR MUTANT (Q44K) PLUS COREPRESSOR (S-ADENOSYL METHIONINE) COMPLEXED TO AN ALTERED MET CONSENSUS OPERATOR SEQUENCE Deposited 1998-01-30 Assembly 1 Protein–DNA Homooligomer；Protein × 4 PDB declaration: hexameric（6） Consistent with all polymers
Chain A 1–104（104 aa）
Chain B 1–104（104 aa）
Chain C 1–104（104 aa）
Chain D 1–104（104 aa）
Mutation：Q44K Mutation：Q44K Mutation：Q44K Mutation：Q44K SAM S-ADENOSYLMETHIONINE × 4 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；PROTEIN (10MG/ML) + SAM(1.5MG/ML) + DNA (4MG/ML) WAS CRYSTALLISED FROM 28-38% MPD, 100MM SODIUM CACODYLATE BUFFER, PH 6.0-7.0, 40MM CACL2
Resolution 2.40 Å R-free 0.268
1MJQ METHIONINE REPRESSOR MUTANT (Q44K) PLUS COREPRESSOR (S-ADENOSYL METHIONINE) COMPLEXED TO AN ALTERED MET CONSENSUS OPERATOR SEQUENCE Deposited 1998-01-30 Assembly 2 Protein–DNA Homooligomer；Protein × 4 PDB declaration: hexameric（6） Consistent with all polymers
Chain G 1–104（104 aa）
Chain H 1–104（104 aa）
Chain I 1–104（104 aa）
Chain J 1–104（104 aa）
Mutation：Q44K Mutation：Q44K Mutation：Q44K Mutation：Q44K SAM S-ADENOSYLMETHIONINE × 4 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；PROTEIN (10MG/ML) + SAM(1.5MG/ML) + DNA (4MG/ML) WAS CRYSTALLISED FROM 28-38% MPD, 100MM SODIUM CACODYLATE BUFFER, PH 6.0-7.0, 40MM CACL2
Resolution 2.40 Å R-free 0.268

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.