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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：Q9NRZ9 New Search
4PDB entries
4Biological assembly
19chain/assembly records
Main Difference Dimensions in This Set
Different construct 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
8SKZ Cryo-EM structure of DDM1-HELLS chimera bound to the nucleosome Deposited 2023-04-20 Assembly 1 Insufficient information Heteromer；Protein × 9 PDB declaration: undecameric（11） Consistent with all polymers
Chain A 500–553（54 aa）
Not recorded 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 3.50 Å
9Z04 Structure of human lymphoid-specific helicase HELLS in its auto-inhibitory state Deposited 2025-10-31 Assembly 1 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 1–838（838 aa）
Chain B 1–838（838 aa）
Chain C 1–838（838 aa）
Chain D 1–838（838 aa）
Chain E 1–838（838 aa）
Chain F 1–838（838 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 2.99 Å
9Z05 Structure of human lymphoid-specific helicase HELLS in its auto-inhibitory state (D3) Deposited 2025-10-31 Assembly 1 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 1–838（838 aa）
Chain B 1–838（838 aa）
Chain C 1–838（838 aa）
Chain D 1–838（838 aa）
Chain E 1–838（838 aa）
Chain F 1–838（838 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 2.86 Å
9Z06 Structure of human lymphoid-specific helicase HELLS in its auto-inhibitory state Deposited 2025-10-31 Assembly 1 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 1–838（838 aa）
Chain B 1–838（838 aa）
Chain C 1–838（838 aa）
Chain D 1–838（838 aa）
Chain E 1–838（838 aa）
Chain F 1–838（838 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 3.39 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.