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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：P53148 New Search
3PDB entries
4Biological assembly
4chain/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
4BL0 Crystal structure of yeast Bub3-Bub1 bound to phospho-Spc105 Deposited 2013-04-30 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain F 165–183（19 aa） Fragment：MELT172, RESIDUES 165-183
Non-standard monomer：Yes (specific site not provided by mmCIF) MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；0.2M K/ NA TARTRATE, 0.1M BIS TRIS PROPANE PH 7.5, 20% PEG 3350
Resolution 1.95 Å R-free 0.192
4BL0 Crystal structure of yeast Bub3-Bub1 bound to phospho-Spc105 Deposited 2013-04-30 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 165–183（19 aa） Fragment：MELT172, RESIDUES 165-183
Non-standard monomer：Yes (specific site not provided by mmCIF) MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；0.2M K/ NA TARTRATE, 0.1M BIS TRIS PROPANE PH 7.5, 20% PEG 3350
Resolution 1.95 Å R-free 0.192
9S4Q Cryo-EM structure of the Saccharomyces cerevisiae KMN junction complex lacking the Mis12c(Mtw1c) head 2 domain Deposited 2025-07-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain Kl 445–917（473 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.90 Å
9S5N Cryo-EM structure of the Saccharomyces cerevisiae KMN junction complex containing the Mis12c(Mtw1c) head 2 domain Deposited 2025-07-29 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain Kl 445–917（473 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 7.20 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.