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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：Q3B726 New Search
6PDB entries
6Biological assembly
6chain/assembly records
Main Difference Dimensions in This Set
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
7OB9 Cryo-EM structure of human RNA Polymerase I in elongation state Deposited 2021-04-21 Assembly 1 Other combination Heteromer；Protein × 13 PDB declaration: hexadecameric（16） Consistent with all polymers
Chain G 1–338（338 aa）
Not recorded ZN ZINC ION × 6 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；blot force 3, blot time 0 s, wait time 0 s
Resolution 2.70 Å
7OBA Cryo-EM structure of human RNA Polymerase I in complex with RRN3 Deposited 2021-04-21 Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric（14） Consistent with protein count
Chain G 1–338（338 aa）
Not recorded ZN ZINC ION × 7 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；blot force 3, blot time 0 s, wait time 0 s
Resolution 3.10 Å
7OBB Cryo-EM structure of human RNA Polymerase I Open Complex Deposited 2021-04-21 Assembly 1 Protein–DNA Heteromer；Protein × 13 PDB declaration: pentadecameric（15） Consistent with all polymers
Chain G 1–338（338 aa）
Not recorded ZN ZINC ION × 7 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；blot force 3, blot time 0 s, wait time 0 s
Resolution 3.30 Å
7VBA Structure of the pre state human RNA Polymerase I Elongation Complex Deposited 2021-08-31 Assembly 1 Other combination Heteromer；Protein × 13 PDB declaration: hexadecameric（16） Consistent with all polymers
Chain G 1–338（338 aa）
Not recorded ZN ZINC ION × 5 MG MAGNESIUM ION × 1 2TM 5'-O-[(S)-hydroxy{[(S)-hydroxy(phosphonooxy)phosphoryl]methyl}phosphoryl]cytidine × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.89 Å
7VBB Structure of the post state human RNA Polymerase I Elongation Complex Deposited 2021-08-31 Assembly 1 Other combination Heteromer；Protein × 13 PDB declaration: hexadecameric（16） Consistent with all polymers
Chain G 1–338（338 aa）
Not recorded ZN ZINC ION × 5 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.81 Å
7VBC Back track state of human RNA Polymerase I Elongation Complex Deposited 2021-08-31 Assembly 1 Other combination Heteromer；Protein × 13 PDB declaration: hexadecameric（16） Consistent with all polymers
Chain G 1–338（338 aa）
Not recorded ZN ZINC ION × 5 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.01 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.