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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：P12464 New Search
8PDB entries
13Biological assembly
16chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification 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
2KRC Solution structure of the N-terminal domain of Bacillus subtilis delta subunit of RNA polymerase Deposited 2009-12-16 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 2–92（91 aa） Fragment：residues 2-92
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.6；301 K；Ionic strength (raw mmCIF value) 10；Pressure 1
NMR sample composition 10 mM sodium chloride-1, 50 uM sodium azide-2, 20 mM phosphate buffer-3, 90% H2O/10% D2O | 90% H2O/10% D2O
NMR sample composition 10 mM sodium chloride-4, 50 uM sodium azide-5, 20 mM phosphate buffer-6, 14.29 mg/mL filamentous Pf1 bacteriophage-7, 90% H2O/10% D2O | 90% H2O/10% D2O
NMR sample composition 10 mM sodium chloride-8, 50 uM sodium azide-9, 20 mM phosphate buffer-10, 5 % polyacrylamide gel-11, 90% H2O/10% D2O | 90% H2O/10% D2O
Resolution not provided
2M4K Solution structure of the delta subunit of RNA polymerase from Bacillus subtilis Deposited 2013-02-07 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 2–173（172 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.6；300 K；Ionic strength (raw mmCIF value) 10；Pressure ambient
NMR sample composition 10 % [U-100% 2H] D2O, 10 mM sodium chloride, 50 uM sodium azide, 20 mM sodium phosphate, 90 % H2O, 90% H2O/10% D2O | 90% H2O/10% D2O
Resolution not provided
4NC7 N-terminal domain of delta-subunit of RNA polymerase complexed with I3C and nickel ions Deposited 2013-10-24 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 2–92（91 aa） Fragment：UNP residues 2-92
Chain B 2–92（91 aa） Fragment：UNP residues 2-92
Not recorded I3C 5-amino-2,4,6-triiodobenzene-1,3-dicarboxylic acid × 1 NI NICKEL (II) ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；290.15 K；2M sodium/potassium phosphate, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 290.15K
X-ray crystallization conditions VAPOR DIFFUSION；pH 8.2；290.15 K；1.8M sodium/potassium phosphate, pH 8.2, VAPOR DIFFUSION, temperature 290.15K
Resolution 2.00 Å R-free 0.259
4NC7 N-terminal domain of delta-subunit of RNA polymerase complexed with I3C and nickel ions Deposited 2013-10-24 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 2–92（91 aa） Fragment：UNP residues 2-92
Not recorded I3C 5-amino-2,4,6-triiodobenzene-1,3-dicarboxylic acid × 2 NI NICKEL (II) ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；290.15 K；2M sodium/potassium phosphate, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 290.15K
X-ray crystallization conditions VAPOR DIFFUSION；pH 8.2；290.15 K；1.8M sodium/potassium phosphate, pH 8.2, VAPOR DIFFUSION, temperature 290.15K
Resolution 2.00 Å R-free 0.259
4NC7 N-terminal domain of delta-subunit of RNA polymerase complexed with I3C and nickel ions Deposited 2013-10-24 Assembly 3 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 2–92（91 aa） Fragment：UNP residues 2-92
Not recorded NI NICKEL (II) ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；290.15 K；2M sodium/potassium phosphate, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 290.15K
X-ray crystallization conditions VAPOR DIFFUSION；pH 8.2；290.15 K；1.8M sodium/potassium phosphate, pH 8.2, VAPOR DIFFUSION, temperature 290.15K
Resolution 2.00 Å R-free 0.259
4NC7 N-terminal domain of delta-subunit of RNA polymerase complexed with I3C and nickel ions Deposited 2013-10-24 Assembly 4 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 2–92（91 aa） Fragment：UNP residues 2-92
Chain B 2–92（91 aa） Fragment：UNP residues 2-92
Not recorded I3C 5-amino-2,4,6-triiodobenzene-1,3-dicarboxylic acid × 2 NI NICKEL (II) ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；290.15 K；2M sodium/potassium phosphate, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 290.15K
X-ray crystallization conditions VAPOR DIFFUSION；pH 8.2；290.15 K；1.8M sodium/potassium phosphate, pH 8.2, VAPOR DIFFUSION, temperature 290.15K
Resolution 2.00 Å R-free 0.259
4NC8 N-terminal domain of delta-subunit of RNA polymerase complexed with nickel ions Deposited 2013-10-24 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 2–92（91 aa） Fragment：UNP residues 2-92
Not recorded NI NICKEL (II) ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；290.15 K；2M sodium/potassium phosphate, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 290.15K
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.2；290.15 K；1.8M sodium/potassium phosphate, pH 8.2, VAPOR DIFFUSION, HANGING DROP, temperature 290.15K
Resolution 2.17 Å R-free 0.283
4NC8 N-terminal domain of delta-subunit of RNA polymerase complexed with nickel ions Deposited 2013-10-24 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 2–92（91 aa） Fragment：UNP residues 2-92
Not recorded NI NICKEL (II) ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；290.15 K；2M sodium/potassium phosphate, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 290.15K
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.2；290.15 K；1.8M sodium/potassium phosphate, pH 8.2, VAPOR DIFFUSION, HANGING DROP, temperature 290.15K
Resolution 2.17 Å R-free 0.283
4NC8 N-terminal domain of delta-subunit of RNA polymerase complexed with nickel ions Deposited 2013-10-24 Assembly 3 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 2–92（91 aa） Fragment：UNP residues 2-92
Chain B 2–92（91 aa） Fragment：UNP residues 2-92
Not recorded NI NICKEL (II) ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；290.15 K；2M sodium/potassium phosphate, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 290.15K
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.2；290.15 K；1.8M sodium/potassium phosphate, pH 8.2, VAPOR DIFFUSION, HANGING DROP, temperature 290.15K
Resolution 2.17 Å R-free 0.283
7F75 Cryo-EM structure of Spx-dependent transcription activation complex Deposited 2021-06-28 Assembly 1 Protein–DNA Heteromer；Protein × 10 PDB declaration: dodecameric（12） Consistent with all polymers
Chain L 1–173（173 aa）
Not recorded MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8XA6 Cryo-EM structure of Bacillus RNAP and SPO1 gp33 complex Deposited 2023-12-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain L 1–173（173 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.02 Å
8XA7 Cryo-EM structure of Bacillus subtilis RNAP,sigA and SPO1 gp33 complex Deposited 2023-12-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain L 1–173（173 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.94 Å
8XA8 Cryo-EM structure of Bacillus RNAP and HelD complex Deposited 2023-12-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain I 1–173（173 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.19 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.