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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：P9WGH9 New Search
8PDB entries
8Biological assembly
9chain/assembly records
Main Difference Dimensions in This Set
Different construct 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
5ZX2 Mycobacterium tuberculosis RNA polymerase transcription initiation complex with ECF sigma factor sigma H and 7nt RNA Deposited 2018-05-17 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain F 1–216（216 aa）
Not recorded ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；2% Tacsimate pH 5.0, 0.1 M Sodium citrate pH5.6, 16 % PEG3350
Resolution 2.80 Å R-free 0.255
5ZX3 Mycobacterium tuberculosis RNA polymerase holoenzyme with ECF sigma factor sigma H Deposited 2018-05-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain F 1–216（216 aa）
Not recorded ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；295 K；0.2 M NaAc, 0.1 M sodium citrate pH5.5, 10% PEG4000
Resolution 2.75 Å R-free 0.258
6JCX Mycobacterium tuberculosis transcription initiation complex with ECF sigma factor sigma H and 6nt RNA Deposited 2019-01-30 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain F 1–216（216 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；0.08M Magnesium acetate, 0.05M sodium cacodylate pH 6.5, 15% PEG 400
Resolution 2.90 Å R-free 0.256
6JCY Mycobacterium tuberculosis RNA polymerase transcription initiation open complex with a chimeric ECF sigma factor sigH/E Deposited 2019-01-30 Assembly 1 Insufficient information Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain F 1–95（95 aa） Fragment：UNP residues 1-95, UNP residues 150-188, UNP residues 144-216
Chain F 144–216（73 aa） Fragment：UNP residues 1-95, UNP residues 150-188, UNP residues 144-216
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；0.2M sodium acetate, 0.1M sodium citrate pH 5.5, 10% PEG4000
Resolution 3.11 Å R-free 0.238
6KON Mycobacterium tuberculosis initial transcription complex comprising sigma H and 5'-OH RNA of 5 nt Deposited 2019-08-12 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain F 1–216（216 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；0.08 M Magnesium acetate, 0.05 M sodium cacodylate pH 6.5, 10% PEG 400
Resolution 3.00 Å R-free 0.271
6KOO Mycobacterium tuberculosis initial transcription complex comprising sigma H and 5'-OH RNA of 7 nt Deposited 2019-08-12 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain F 1–216（216 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；0.08 M Magnesium acetate, 0.05 M sodium cacodylate pH 6.5, 15% PEG 400
Resolution 2.80 Å R-free 0.248
6KOP Mycobacterium tuberculosis initial transcription complex comprising sigma H and 5'-OH RNA of 9 nt Deposited 2019-08-12 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain F 1–216（216 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；0.008 M magnesium acetate, 0.05 M sodium cacodylate pH6.5, 14% PEG 400
Resolution 3.30 Å R-free 0.255
6KOQ Mycobacterium tuberculosis initial transcription complex comprising sigma H and 5'-OH RNA of 10 nt Deposited 2019-08-12 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain F 1–216（216 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；0.08 M magnesium acetate, 0.05 M sodium cacodylated pH 6.5, 15% PEG 400
Resolution 3.35 Å R-free 0.260

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.