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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：P0A990 New Search
14PDB entries
14Biological assembly
30chain/assembly records
Main Difference Dimensions in This Set
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
5X06 DNA replication regulation protein Deposited 2017-01-20 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain A 1–366（366 aa）
Chain B 1–366（366 aa）
Chain C 1–366（366 aa）
Chain D 1–366（366 aa）
Not recorded GOL GLYCEROL × 4 ADP ADENOSINE-5'-DIPHOSPHATE × 4 MG MAGNESIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；291.15 K；0.1M Tris-Cl pH 7.0, 10.5% PEG 400, 0.2M Calcium chloride, 10mM Trimethylamine-HCl, 1mM ADP, 5mM Magnesium chloride
Resolution 3.24 Å R-free 0.265
6FVM Mutant DNA polymerase sliding clamp from Escherichia coli with bound P7 peptide Deposited 2018-03-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–366（366 aa）
Chain B 1–366（366 aa）
Not recorded CA CALCIUM ION × 1 1PE PENTAETHYLENE GLYCOL × 9 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；293 K；MES 50mM pH 6, CaCl2 50mM, PEG400 28%+ Hampton Research PEG Ion kit B3 (1 microliter): 0.2M lithium nitrate, 20% PEG 3350 pH 7.1
Resolution 1.63 Å R-free 0.219
9OYB Structure of the E. coli clamp loader DnaX-complex loading beta-clamp onto 1-nt gapped DNA in state 1 conformer 1 with flexibly bound DNA at the shoulder Deposited 2025-06-04 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: 11-meric（11） Consistent with all polymers
Chain F 1–366（366 aa）
Chain G 1–366（366 aa）
Not recorded ZN ZINC ION × 4 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.14 Å
9OYC Structure of the E. coli clamp loader DnaX-complex loading beta-clamp onto 1-nt gapped DNA in state 1 conformer 2 with flexibly bound DNA at the shoulder Deposited 2025-06-04 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: 11-meric（11） Consistent with all polymers
Chain F 1–366（366 aa）
Chain G 1–366（366 aa）
Not recorded ZN ZINC ION × 4 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.71 Å
9OYD Structure of the E. coli clamp loader DnaX-complex loading beta-clamp onto 1-nt gapped DNA in state 1 conformer 3 with disordered DNA at the shoulder Deposited 2025-06-04 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: decameric（10） Consistent with all polymers
Chain F 1–366（366 aa）
Chain G 1–366（366 aa）
Not recorded ZN ZINC ION × 4 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.73 Å
9OYE Structure of the E. coli clamp loader DnaX-complex loading beta-clamp onto 1-nt gapped DNA in state 2 conformer 1 with sharply bent DNA Deposited 2025-06-04 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: 11-meric（11） Consistent with all polymers
Chain F 1–366（366 aa）
Chain G 1–366（366 aa）
Not recorded ZN ZINC ION × 4 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.72 Å
9OYF Structure of the E. coli clamp loader DnaX-complex loading beta-clamp onto 1-nt gapped DNA in state 2 conformer 2 with less bent DNA Deposited 2025-06-04 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: 11-meric（11） Consistent with all polymers
Chain F 1–366（366 aa）
Chain G 1–366（366 aa）
Not recorded ZN ZINC ION × 4 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.12 Å
9OYH Structure of the E. coli clamp loader DnaX-complex loading beta-clamp onto 10-nt gapped DNA in state 1 the DNA recognition state Deposited 2025-06-04 Assembly 1 Protein–DNA Heteromer；Protein × 9 PDB declaration: 11-meric（11） Consistent with all polymers
Chain F 1–366（366 aa）
Chain G 1–366（366 aa）
Not recorded ZN ZINC ION × 4 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.54 Å
9OYI Structure of the E. coli clamp loader DnaX-complex loading beta-clamp onto 10-nt gapped DNA in state 2 conformer 1 with fully open clamp and unsettled DNA Deposited 2025-06-04 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: decameric（10） Consistent with all polymers
Chain F 1–366（366 aa）
Chain G 1–366（366 aa）
Not recorded ZN ZINC ION × 4 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.54 Å
9OYJ Structure of the E. coli clamp loader DnaX-complex loading beta-clamp onto 10-nt gapped DNA in state 2 conformer 2 with fully open clamp and settled DNA Deposited 2025-06-04 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: decameric（10） Consistent with all polymers
Chain F 1–366（366 aa）
Chain G 1–366（366 aa）
Not recorded ZN ZINC ION × 4 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.53 Å
9OYK Structure of the E. coli clamp loader DnaX-complex loading beta-clamp onto 10-nt gapped DNA in state 2 conformer 3 with partially closed clamp Deposited 2025-06-04 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: decameric（10） Consistent with all polymers
Chain F 1–366（366 aa）
Chain G 1–366（366 aa）
Not recorded ZN ZINC ION × 4 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.60 Å
9OYL Structure of the E. coli clamp loader DnaX-complex loading beta-clamp onto 10-nt gapped DNA in state 2 conformer 4 with fully closed clamp Deposited 2025-06-04 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: decameric（10） Consistent with all polymers
Chain F 1–366（366 aa）
Chain G 1–366（366 aa）
Not recorded ZN ZINC ION × 4 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.88 Å
9OYM Structure of the E. coli clamp loader DnaX-complex loading beta-clamp onto 10-nt gapped DNA in state 2 conformer 5 with fully closed clamp Deposited 2025-06-04 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: decameric（10） Consistent with all polymers
Chain F 1–366（366 aa）
Chain G 1–366（366 aa）
Not recorded ZN ZINC ION × 4 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.60 Å
9OYN Structure of the E. coli clamp loader DnaX-complex loading beta-clamp onto 10-nt gapped DNA in state 2 conformer 6 with fully closed clamp Deposited 2025-06-04 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: decameric（10） Consistent with all polymers
Chain F 1–366（366 aa）
Chain G 1–366（366 aa）
Not recorded ZN ZINC ION × 4 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 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.