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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：Q9X4D0 New Search
5PDB entries
5Biological assembly
10chain/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
1D0Q STRUCTURE OF THE ZINC-BINDING DOMAIN OF BACILLUS STEAROTHERMOPHILUS DNA PRIMASE Deposited 1999-09-14 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–103（103 aa） Fragment：ZINC-BINDING DOMAIN
Chain B 1–103（103 aa） Fragment：ZINC-BINDING DOMAIN
Not recorded ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.1；298 K；LITHIUM SULFATE, SODIUM CITRATE, ZINC ACETATE, pH 6.1, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K
Resolution 1.71 Å R-free 0.225
1Z8S DnaB binding domain of DnaG (P16) from Bacillus stearothermophilus (residues 452-597) Deposited 2005-03-31 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 451–597（147 aa） Fragment：P16, Residues 451-597
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.8；298 K；Ionic strength (raw mmCIF value) 20mM potassium phosphate, 200mM sodium chloride；Pressure ambient
NMR measurement conditions pH 6.8；298 K；Ionic strength (raw mmCIF value) 20mM potassium phosphate, 200mM sodium chloride；Pressure ambient
NMR measurement conditions pH 6.8；298 K；Ionic strength (raw mmCIF value) 20mM potassium phosphate, 200mM sodium chloride；Pressure ambient
NMR sample composition 1mM U-15N P16 | 90% H2O/10% D2O
NMR sample composition 1mM U-15N U13C P16 | 90% H2O/10% D2O
NMR sample composition 0.5mM U-15N P16 | 50% H2O/50% D2O
Resolution not provided
2R6A Crystal Form BH1 Deposited 2007-09-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain C 455–597（143 aa） Fragment：Helicase Binding Domain
Non-standard monomer：Yes (specific site not provided by mmCIF) SO4 SULFATE ION × 12 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6；298 K；1.0M Lithium Sulfate, 5% MPD, pH 6.0, VAPOR DIFFUSION, temperature 298K
Resolution 2.90 Å R-free 0.297
2R6C Crystal Form BH2 Deposited 2007-09-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 18 PDB declaration: octadecameric（18） Consistent with protein count
Chain G 455–597（143 aa） Fragment：Helicase Binding Domain
Chain H 455–597（143 aa） Fragment：Helicase Binding Domain
Chain I 455–597（143 aa） Fragment：Helicase Binding Domain
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6.5；298 K；0.5M Sodium Succinate, pH 6.5, VAPOR DIFFUSION, temperature 298K
Resolution 4.00 Å R-free 0.344
4M4W Mechanistic implications for the bacterial primosome assembly of the structure of a helicase-helicase loader complex Deposited 2013-08-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 15 PDB declaration: pentadecameric（15） Consistent with protein count
Chain G 455–597（143 aa） Fragment：Helicase Binding Domain (UNP residues 455-597)
Chain H 455–597（143 aa） Fragment：Helicase Binding Domain (UNP residues 455-597)
Chain I 455–597（143 aa） Fragment：Helicase Binding Domain (UNP residues 455-597)
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8；290 K；11-13% w/v PEG3350, 0.2 M lithium sulfate, 50 mM TRIS, pH 8.0-8.3, VAPOR DIFFUSION, temperature 290K
Resolution 6.10 Å R-free 0.392

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.