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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：Q6IPU0 New Search
13PDB entries
13Biological assembly
13chain/assembly records
Main Difference Dimensions in This Set
Different assembly state 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
28OP Structure of the human inner kinetochore CCAN and CENP-C bound to DNA Deposited 2026-02-11 Assembly 1 Insufficient information Heteromer；Protein × 16 PDB declaration: 18-meric（18） Consistent with all polymers
Chain P 1–288（288 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 Å
7PB8 Crystal structure of the CENP-OPQUR complex Deposited 2021-07-31 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain P 1–288（288 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；291 K；15% PEG2kmme, 40 mM NaFormate, 200 mM bis-tris propane pH 6.9
Resolution 3.68 Å R-free 0.352
7PKN Structure of the human CCAN deltaCT complex Deposited 2021-08-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 11 PDB declaration: undecameric（11） Consistent with protein count
Chain P 1–288（288 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
7QOO Structure of the human inner kinetochore CCAN complex Deposited 2021-12-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 15 PDB declaration: pentadecameric（15） Consistent with protein count
Chain P 1–288（288 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 6.8；0.0025% Triton
cryo-EM vitrification conditions Cryogen ETHANE；blot for 3.5 seconds at blot force -3
Resolution 4.60 Å
7R5S Structure of the human CCAN bound to alpha satellite DNA Deposited 2022-02-11 Assembly 1 Protein–DNA Heteromer；Protein × 15 PDB declaration: heptadecameric（17） Consistent with all polymers
Chain P 1–288（288 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.83 Å
7R5V Structure of the human CCAN CENP-A alpha-satellite complex Deposited 2022-02-11 Assembly 1 Protein–DNA Heteromer；Protein × 11 PDB declaration: tridecameric（13） Consistent with all polymers
Chain P 1–288（288 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.55 Å
7XHN Structure of human inner kinetochore CCAN-DNA complex Deposited 2022-04-09 Assembly 1 Protein–DNA Heteromer；Protein × 18 PDB declaration: eicosameric（20） Consistent with all polymers
Chain P 1–288（288 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.71 Å
7XHO Structure of human inner kinetochore CCAN complex Deposited 2022-04-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 17 PDB declaration: heptadecameric（17） Consistent with protein count
Chain P 1–288（288 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.29 Å
7YWX Structure of the human CCAN CENP-A alpha-satellite complex Deposited 2022-02-14 Assembly 1 Protein–DNA Heteromer；Protein × 25 PDB declaration: 27-meric（27） Consistent with all polymers
Chain P 1–288（288 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 12.00 Å
7YYH Structure of the human CCANdeltaT CENP-A alpha-satellite complex Deposited 2022-02-17 Assembly 1 Protein–DNA Heteromer；Protein × 21 PDB declaration: 23-meric（23） Consistent with all polymers
Chain P 1–288（288 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 8.90 Å
9TAW Structure of the human inner kinetochore CCAN bound to DNA Deposited 2025-11-18 Assembly 1 Protein–DNA Heteromer；Protein × 16 PDB declaration: 18-meric（18） Consistent with all polymers
Chain P 1–288（288 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.54 Å
9TAX Structure of the human inner kinetochore CCAN bound to a mono-CENP-A nucleosome Deposited 2025-11-18 Assembly 1 Protein–DNA Heteromer；Protein × 25 PDB declaration: 27-meric（27） Consistent with all polymers
Chain P 1–288（288 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.50 Å
9TAY Structure of the human inner kinetochore CCAN bound to a di-CENP-A nucleosome Deposited 2025-11-18 Assembly 1 Insufficient information Heteromer；Protein × 35 PDB declaration: 37-meric（37） Consistent with all polymers
Chain P 1–288（288 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 15.50 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.