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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：Q9H668 New Search
8PDB entries
9Biological assembly
9chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification 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
4JOI Crystal structure of the human telomeric Stn1-Ten1 complex Deposited 2013-03-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 19–184（166 aa） Fragment：Stn1 N-terminal domain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4；291 K；0.8 M AmSO4, 0.1 M citric acid pH 4.0 and 5% jeffamine M-600, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.05 Å R-free 0.249
4JOI Crystal structure of the human telomeric Stn1-Ten1 complex Deposited 2013-03-18 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 19–184（166 aa） Fragment：Stn1 N-terminal domain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4；291 K；0.8 M AmSO4, 0.1 M citric acid pH 4.0 and 5% jeffamine M-600, VAPOR DIFFUSION, SITTING DROP, temperature 291K
Resolution 2.05 Å R-free 0.249
4JQF Structure of the C-terminal domain of human telomeric Stn1 Deposited 2013-03-20 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 191–368（178 aa） Fragment：unp residues 191-368
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8.5；289.15 K；1.6 M Ammonium phosphate dibasic, 100 mM Tris, 3% Ethylene glycol, pH 8.5, VAPOR DIFFUSION, Microbatch Crystallization, temperature 289.15K
Resolution 1.60 Å R-free 0.219
6W6W Cryo-EM structure of CST bound to telomeric single-stranded DNA Deposited 2020-03-17 Assembly 1 Protein–DNA Heteromer；Protein × 4 PDB declaration: pentameric（5） Consistent with all polymers
Chain C 2–368（367 aa）
Not recorded ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
7U5C Cryo-EM structure of human CST bound to DNA polymerase alpha-primase in a recruitment state Deposited 2022-03-02 Assembly 1 Protein–DNA Heteromer；Protein × 7 PDB declaration: octameric（8） Consistent with all polymers
Chain F 1–368（368 aa）
Not recorded ZN ZINC ION × 4 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.60 Å
8D0B Human CST-DNA polymerase alpha/primase preinitiation complex bound to 4xTEL-foldback template Deposited 2022-05-26 Assembly 1 Protein–DNA Heteromer；Protein × 7 PDB declaration: octameric（8） Consistent with all polymers
Chain B 7–368（362 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；CHAPSO is only added just before sample vitrification.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.43 Å
8D0K Human CST-DNA polymerase alpha/primase preinitiation complex bound to 4xTEL-foldback template - PRIM2C advanced PIC Deposited 2022-05-26 Assembly 1 Protein–DNA Heteromer；Protein × 7 PDB declaration: octameric（8） Consistent with all polymers
Chain B 2–368（367 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；CHAPSO is only added just before sample vitrification.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.27 Å
8SOJ Cryo-EM structure of human CST bound to POT1(ESDL)/TPP1 in the absence of telomeric ssDNA Deposited 2023-04-28 Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 1–368（368 aa）
Not recorded ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8SOK Cryo-EM structure of human CST bound to POT1(ESDL)/TPP1 in the presence of telomeric ssDNA Deposited 2023-04-28 Assembly 1 Insufficient information Heteromer；Protein × 5 PDB declaration: hexameric（6） Consistent with all polymers
Chain B 1–368（368 aa）
Not recorded ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 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.