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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：Q9NR82 New Search
5PDB entries
8Biological assembly
24chain/assembly records
Main Difference Dimensions in This Set
Different construct 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
6B8Q Crystal Structure of the Mg2+/CaM:Kv7.5 (KCNQ5) AB domain complex Deposited 2017-10-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 361–394（34 aa）
Chain A 530–564（35 aa）
Not recorded MG MAGNESIUM ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；298 K；0.2M magnesium formate, 20% PEG 3350
Resolution 2.60 Å R-free 0.270
6B8Q Crystal Structure of the Mg2+/CaM:Kv7.5 (KCNQ5) AB domain complex Deposited 2017-10-09 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 361–394（34 aa）
Chain C 530–564（35 aa）
Not recorded MG MAGNESIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；298 K；0.2M magnesium formate, 20% PEG 3350
Resolution 2.60 Å R-free 0.270
6B8Q Crystal Structure of the Mg2+/CaM:Kv7.5 (KCNQ5) AB domain complex Deposited 2017-10-09 Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 361–394（34 aa）
Chain E 530–564（35 aa）
Not recorded MG MAGNESIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；298 K；0.2M magnesium formate, 20% PEG 3350
Resolution 2.60 Å R-free 0.270
6B8Q Crystal Structure of the Mg2+/CaM:Kv7.5 (KCNQ5) AB domain complex Deposited 2017-10-09 Assembly 4 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain G 361–394（34 aa）
Chain G 530–564（35 aa）
Not recorded MG MAGNESIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；298 K；0.2M magnesium formate, 20% PEG 3350
Resolution 2.60 Å R-free 0.270
9J38 human KCNQ5-CaM in apo state Deposited 2024-08-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain A 90–698（609 aa）
Chain B 90–698（609 aa）
Chain C 90–698（609 aa）
Chain D 90–698（609 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.40 Å
9LIZ Human KCNQ5-CaM in complex with PIP2 Deposited 2025-01-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain A 90–698（609 aa）
Chain B 90–698（609 aa）
Chain D 90–698（609 aa）
Chain G 90–698（609 aa）
Not recorded PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
9LJ1 Human KCNQ5-CaM-PIP2-HN37 complex in a closed conformation. Deposited 2025-01-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain A 90–698（609 aa）
Chain B 90–698（609 aa）
Chain D 90–698（609 aa）
Chain G 90–698（609 aa）
Not recorded 9MF methyl N-[4-[(4-fluorophenyl)methyl-prop-2-ynyl-amino]-2,6-dimethyl-phenyl]carbamate × 4 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
9LJ5 Human KCNQ5-CaM-PIP2-HN37 complex in an open conformation. Deposited 2025-01-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain A 90–698（609 aa）
Chain B 90–698（609 aa）
Chain D 90–698（609 aa）
Chain G 90–698（609 aa）
Not recorded PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 8 9MF methyl N-[4-[(4-fluorophenyl)methyl-prop-2-ynyl-amino]-2,6-dimethyl-phenyl]carbamate × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 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.