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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：C4QYQ8 New Search
4PDB entries
4Biological assembly
4chain/assembly records
Main Difference Dimensions in This Set
Different construct Different assembly state 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
7XSX RNA polymerase II elongation complex transcribing a nucleosome (EC49) Deposited 2022-05-15 Assembly 1 Other combination Heteromer；Protein × 32 PDB declaration: 35-meric（35） Consistent with all polymers
Chain j 1–953（953 aa）
Not recorded ZN ZINC ION × 10 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
7XTD RNA polymerase II elongation complex transcribing a nucleosome (EC58oct) Deposited 2022-05-16 Assembly 1 Other combination Heteromer；Protein × 32 PDB declaration: 35-meric（35） Consistent with all polymers
Chain j 1–1005（1005 aa）
Not recorded ZN ZINC ION × 10 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.90 Å
7XTI RNA polymerase II elongation complex transcribing a nucleosome (EC58hex) Deposited 2022-05-17 Assembly 1 Other combination Heteromer；Protein × 30 PDB declaration: 33-meric（33） Consistent with all polymers
Chain j 1–1005（1005 aa）
Not recorded ZN ZINC ION × 10 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.90 Å
9WMW Co-transcriptional histone H3K36 methylation complex containing RNA polymerase II elongation complex, Set2, and the upstream nucleosome. (temp115, FACT-hexamer) Deposited 2025-09-03 Assembly 1 Other combination Heteromer；Protein × 31 PDB declaration: 34-meric（34） Consistent with all polymers
Chain j 1–938（938 aa）
Not recorded ZN ZINC ION × 10 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.62 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.