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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：A0A6A5Q270 New Search
20PDB entries
20Biological assembly
21chain/assembly records
Main Difference Dimensions in This Set
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
7MEI Composite structure of EC+EC Deposited 2021-04-06 Assembly 1 Other combination Heteromer；Protein × 26 PDB declaration: 30-meric（30） Consistent with all polymers
Chain G 1–171（171 aa）
Chain g 1–171（171 aa）
Not recorded ZN ZINC ION × 16 MG MAGNESIUM ION × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；20 mM HEPES PH 7.6 50 mM KoAc 5 mM DTT 2 mM MgoAc
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.54 Å
7MK9 Complex structure of trailing EC of EC+EC (trailing EC-focused) Deposited 2021-04-22 Assembly 1 Other combination Heteromer；Protein × 14 PDB declaration: heptadecameric（17） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 8 MG MAGNESIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；20 mM HEPES PH 7.6 50 mM KoAc 5 mM DTT 2 mM MgoAc
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.54 Å
7MKA Structure of EC+EC (leading EC-focused) Deposited 2021-04-22 Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: pentadecameric（15） Consistent with all polymers
Chain g 1–171（171 aa）
Not recorded ZN ZINC ION × 8 MG MAGNESIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；20 mM HEPES PH 7.6 50 mM KoAc 5 mM DTT 2 mM MgoAc
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.54 Å
7ML0 RNA polymerase II pre-initiation complex (PIC1) Deposited 2021-04-27 Assembly 1 Protein–DNA Heteromer；Protein × 26 PDB declaration: 28-meric（28） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 17 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
7ML1 RNA polymerase II pre-initiation complex (PIC2) Deposited 2021-04-27 Assembly 1 Protein–DNA Heteromer；Protein × 28 PDB declaration: 30-meric（30） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 19 SF4 IRON/SULFUR CLUSTER × 1 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.00 Å
7ML2 RNA polymerase II pre-initiation complex (PIC3) Deposited 2021-04-27 Assembly 1 Protein–DNA Heteromer；Protein × 28 PDB declaration: 30-meric（30） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 17 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
7ML4 RNA polymerase II initially transcribing complex (ITC) Deposited 2021-04-27 Assembly 1 Other combination Heteromer；Protein × 28 PDB declaration: 31-meric（31） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 15 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
8TUG Cryo-EM structure of CPD-stalled Pol II in complex with Rad26 (engaged state) Deposited 2023-08-16 Assembly 1 Other combination Heteromer；Protein × 13 PDB declaration: 16-meric（16） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 8 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8TVP Cryo-EM structure of CPD-stalled Pol II in complex with Rad26 (open state) Deposited 2023-08-18 Assembly 1 Other combination Heteromer；Protein × 13 PDB declaration: 16-meric（16） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 8 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å
8TVS Cryo-EM structure of backtracked Pol II in complex with Rad26 Deposited 2023-08-18 Assembly 1 Other combination Heteromer；Protein × 13 PDB declaration: 16-meric（16） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 8 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.40 Å
8TVV Cryo-EM structure of backtracked Pol II Deposited 2023-08-18 Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: 15-meric（15） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 8 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å
8TVW Cryo-EM structure of CPD-stalled Pol II (conformation 1) Deposited 2023-08-18 Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: 15-meric（15） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 8 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8TVX Cryo-EM structure of CPD-stalled Pol II (Conformation 2) Deposited 2023-08-18 Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: 15-meric（15） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 8 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å
8TVY Cryo-EM structure of CPD lesion containing RNA Polymerase II elongation complex with Rad26 and Elf1 (closed state) Deposited 2023-08-18 Assembly 1 Other combination Heteromer；Protein × 14 PDB declaration: 17-meric（17） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 8 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
8U9R STRUCTURAL BASIS OF TRANSCRIPTION: RNA POLYMERASE II SUBSTRATE BINDING AND METAL COORDINATION USING A FREE-ELECTRON LASER Deposited 2023-09-20 Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: tetradecameric（14） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 8 GOL GLYCEROL × 1 MG MAGNESIUM ION × 3 ATP ADENOSINE-5'-TRIPHOSPHATE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；289 K；10-15 % tacsimate 100mM Hepes pH 7.5
Resolution 3.34 Å R-free 0.261
8U9X STRUCTURAL BASIS OF TRANSCRIPTION: RNA POLYMERASE II SUBSTRATE BINDING AND METAL COORDINATION AT 3.0 A OF T834P MUTANT USING A FREE-ELECTRON LASER Deposited 2023-09-20 Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: tetradecameric（14） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 8 MN MANGANESE (II) ION × 3 ATP ADENOSINE-5'-TRIPHOSPHATE × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 7.5；289 K；10-15 % tacsimate 100mM Hepes
Resolution 3.05 Å R-free 0.307
8UMH Consensus map of PICdeltaTFIIK form2 Deposited 2023-10-17 Assembly 1 Protein–DNA Heteromer；Protein × 28 PDB declaration: 30-meric（30） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 15 MG MAGNESIUM ION × 2 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；20 mM HEPES PH 7.6 50 mM KOAc 5 mM DTT 2 mM MgOAc
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8UMI consensus map of PICdeltaTFIIK form1 Deposited 2023-10-17 Assembly 1 Protein–DNA Heteromer；Protein × 28 PDB declaration: 30-meric（30） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 1 ZN ZINC ION × 15 MG MAGNESIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；20 mM HEPES PH 7.6 50 mM KOAc 5 mM DTT 2 mM MgOAc
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å
9BVT RNA Pol II - High Mn(+2) concentration Deposited 2024-05-20 Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: tetradecameric（14） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 8 MN MANGANESE (II) ION × 2 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277 K；Tacsimate Hepes
Resolution 3.40 Å R-free 0.249
9BW0 RNA Polymerase II - No ATP Deposited 2024-05-20 Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: tetradecameric（14） Consistent with all polymers
Chain G 1–171（171 aa）
Not recorded ZN ZINC ION × 8 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；277 K；Tacsimate, Hepes pH 7.0
Resolution 3.51 Å R-free 0.246

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.