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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：P27692 New Search
8PDB entries
9Biological assembly
9chain/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
2EXU Crystal Structure of Saccharomyces cerevisiae transcription elongation factors Spt4-Spt5NGN domain Deposited 2005-11-08 Assembly 1 Insufficient information Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 285–375（91 aa） Fragment：Spt4, Spt5 NGN domain
Not recorded ZN ZINC ION × 2 EOH ETHANOL × 4 MPD (4S)-2-METHYL-2,4-PENTANEDIOL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.8；293 K；30% EtOH, 50mM NaCl, 100mM Tris-HCl, pH 8.8, VAPOR DIFFUSION, HANGING DROP, temperature 293.0K
Resolution 2.23 Å R-free 0.221
4YTK Structure of the KOW1-Linker1 domain of Transcription Elongation Factor Spt5 Deposited 2015-03-17 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 382–511（130 aa） Fragment：UNP Residues 382-511
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；293 K；0.1 M Tris-HCl, pH 8.0, 30% (w/v) PEG 3350
Resolution 1.09 Å R-free 0.199
4YTL Structure of the KOW2-KOW3 Domain of Transcription Elongation Factor Spt5. Deposited 2015-03-17 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 534–632（99 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5；293 K；0.1 M sodium citrate (pH 5.0), 0.5 M ammonium sulfate, and 1.0 M lithium sulfate
Resolution 1.60 Å R-free 0.203
4YTL Structure of the KOW2-KOW3 Domain of Transcription Elongation Factor Spt5. Deposited 2015-03-17 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 534–632（99 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SO4 SULFATE ION × 3 GOL GLYCEROL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5；293 K；0.1 M sodium citrate (pH 5.0), 0.5 M ammonium sulfate, and 1.0 M lithium sulfate
Resolution 1.60 Å R-free 0.203
7NKX RNA polymerase II-Spt4/5-nucleosome-Chd1 structure Deposited 2021-02-19 Assembly 1 Other combination Heteromer；Protein × 23 PDB declaration: 26-meric（26） Consistent with all polymers
Chain Z 1–1063（1063 aa）
Not recorded ZN ZINC ION × 8 MG MAGNESIUM ION × 1 ADP ADENOSINE-5'-DIPHOSPHATE × 1 BEF BERYLLIUM TRIFLUORIDE ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
8JCH Cryo-EM structure of yeast Rat1-bound Pol II pre-termination transcription complex 1 (Pol II Rat1-PTTC1) Deposited 2023-05-11 Assembly 1 Other combination Heteromer；Protein × 15 PDB declaration: 18-meric（18） Consistent with all polymers
Chain W 1–1063（1063 aa）
Not recorded ZN ZINC ION × 8 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 Å
8K5P Cryo-EM structure of yeast Rat1-bound Pol II pre-termination transcription complex 2 (Pol II Rat1-PTTC2) Deposited 2023-07-23 Assembly 1 Other combination Heteromer；Protein × 15 PDB declaration: 18-meric（18） Consistent with all polymers
Chain W 1–1063（1063 aa）
Not recorded ZN ZINC ION × 8 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.80 Å
8RAM Structure of Sen1 bound RNA Polymerase II pre-termination complex Deposited 2023-12-01 Assembly 1 Other combination Heteromer；Protein × 16 PDB declaration: 19-meric（19） Consistent with all polymers
Chain Z 1–1063（1063 aa）
Not recorded ZN ZINC ION × 9 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.80 Å
8RAP Structure of Sen1-ADP.BeF3 bound RNA Polymerase II pre-termination complex Deposited 2023-12-01 Assembly 1 Other combination Heteromer；Protein × 16 PDB declaration: 19-meric（19） Consistent with all polymers
Chain Z 1–1063（1063 aa）
Not recorded ZN ZINC ION × 9 MG MAGNESIUM ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 1 BEF BERYLLIUM TRIFLUORIDE ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 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.