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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：B7MFL0 New Search
17PDB entries
17Biological assembly
17chain/assembly records
Main Difference Dimensions in This Set
Different construct 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
5UI8 structure of sigmaN-holoenzyme Deposited 2017-01-13 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain K 1–91（91 aa）
Not recorded MG MAGNESIUM ION × 1 ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP
Resolution 3.76 Å R-free 0.312
6AWB Structure of 30S ribosomal subunit and RNA polymerase complex in non-rotated state Deposited 2017-09-05 Assembly 1 Protein–RNA Heteromer；Protein × 26 PDB declaration: 27-meric（27） Consistent with all polymers
Chain 05 2–77（76 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7；20 mM Tris-HCl, pH 7.0, 100 mM NH4Cl, 10 mM MgCl2, 0.5 mM EDTA, 6 mM BME
cryo-EM vitrification conditions Cryogen ETHANE；2.5 uL of 50 nM 30S and 150 nM RNAP was applied to the grid. After a 30 second incubation, the grid was blotted for 5 seconds at blotting power 8.
Resolution 6.70 Å
6AWC Structure of 30S ribosomal subunit and RNA polymerase complex in rotated state Deposited 2017-09-05 Assembly 1 Protein–RNA Heteromer；Protein × 26 PDB declaration: 27-meric（27） Consistent with all polymers
Chain 05 2–60（59 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7；20 mM Tris-HCl, pH 7.0, 100 mM NH4Cl, 10 mM MgCl2, 0.5 mM EDTA, 6 mM BME
cryo-EM vitrification conditions Cryogen ETHANE；2.5 uL of 50 nM 30S and 150 nM RNAP was applied to the grid. After a 30 second incubation, the grid was blotted for 5 seconds at blotting power 8.
Resolution 7.90 Å
6AWD Structure of 30S (S1 depleted) ribosomal subunit and RNA polymerase complex Deposited 2017-09-05 Assembly 1 Protein–RNA Heteromer；Protein × 25 PDB declaration: 26-meric（26） Consistent with all polymers
Chain 05 2–60（59 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7；20 mM Tris-HCl, pH 7.0, 100 mM NH4Cl, 10 mM MgCl2, 0.5 mM EDTA, 6 mM BME
cryo-EM vitrification conditions Cryogen ETHANE；2.5 uL of 50 nM 30S and 150 nM RNAP was applied to the grid. After a 30 second incubation, the grid was blotted for 5 seconds at blotting power 8.
Resolution 8.10 Å
6B6H The cryo-EM structure of a bacterial class I transcription activation complex Deposited 2017-10-02 Assembly 1 Other combination Heteromer；Protein × 9 PDB declaration: dodecameric（12） Consistent with all polymers
Chain E 1–91（91 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 CMP ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；20 mM TRIS pH 7.5, 50 mM sodium chloride, 0.1mM EDTA, 5 mM MgCl2, 5 mM DTT
cryo-EM vitrification conditions Cryogen ETHANE；3 second blotting
Resolution 3.90 Å
6PB4 The E. coli class-II CAP-dependent transcription activation complex with de novo RNA transcript at the state 2 Deposited 2019-06-13 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: undecameric（11） Consistent with all polymers
Chain E 1–91（91 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 CMP ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；blot for 3 seconds before plunging
Resolution 4.35 Å
6PB5 The E. coli class-II CAP-dependent transcription activation complex at the state 1 architecture Deposited 2019-06-13 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: decameric（10） Consistent with all polymers
Chain E 1–91（91 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 CMP ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；blot for 3 seconds before plunging
Resolution 4.52 Å
6PB6 The E. coli class-II CAP-dependent transcription activation complex at the state 2 Deposited 2019-06-13 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: decameric（10） Consistent with all polymers
Chain E 1–91（91 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 CMP ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；blot for 3 seconds before plunging
Resolution 4.29 Å
6PMI Sigm28-transcription initiation complex with specific promoter at the state 1 Deposited 2019-07-02 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain E 1–91（91 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；blot for 3 seconds before plunging
Resolution 3.86 Å
6PMJ Sigm28-transcription initiation complex with specific promoter at the state 2 Deposited 2019-07-02 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain E 1–91（91 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；blot for 3 seconds before plunging
Resolution 3.91 Å
6XH7 CueR-TAC without RNA Deposited 2020-06-18 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: decameric（10） Consistent with all polymers
Chain E 1–91（91 aa）
Not recorded ZN ZINC ION × 2 CU COPPER (II) ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.90 Å
6XH8 CueR-transcription activation complex with RNA transcript Deposited 2020-06-18 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: undecameric（11） Consistent with all polymers
Chain E 1–91（91 aa）
Not recorded ZN ZINC ION × 2 CU COPPER (II) ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
6XL5 Cryo-EM structure of EcmrR-RNAP-promoter open complex (EcmrR-RPo) Deposited 2020-06-28 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: decameric（10） Consistent with all polymers
Chain E 1–91（91 aa）
Not recorded 1N7 CHAPSO × 5 MG MAGNESIUM ION × 1 ZN ZINC ION × 2 118 TETRAPHENYLANTIMONIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.50 Å
6XLJ Cryo-EM structure of EcmrR-RNAP-promoter initial transcribing complex with 4-nt RNA transcript (EcmrR-RPitc-4nt) Deposited 2020-06-28 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: undecameric（11） Consistent with all polymers
Chain E 1–91（91 aa）
Not recorded 1N7 CHAPSO × 5 118 TETRAPHENYLANTIMONIUM ION × 3 MG MAGNESIUM ION × 2 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 Å
6XLL Cryo-EM structure of E. coli RNAP-promoter initial transcribing complex with 5-nt RNA transcript (RPitc-5nt) Deposited 2020-06-28 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain E 1–91（91 aa）
Not recorded 1N7 CHAPSO × 2 MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 Å
6XLM Cryo-EM structure of E.coli RNAP-DNA elongation complex 1 (RDe1) in EcmrR-dependent transcription Deposited 2020-06-28 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain E 1–91（91 aa）
Not recorded 1N7 CHAPSO × 2 MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
6XLN Cryo-EM structure of E. coli RNAP-DNA elongation complex 2 (RDe2) in EcmrR-dependent transcription Deposited 2020-06-28 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: octameric（8） Consistent with all polymers
Chain E 1–91（91 aa）
Not recorded 1N7 CHAPSO × 2 MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.80 Å

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.