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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：Q7Z6J0 New Search
4PDB entries
5Biological assembly
5chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion 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
7NZC First SH3 domain of POSH (Plenty of SH3 Domains protein) Deposited 2021-03-23 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain AAA 135–194（60 aa）
Not recorded EPE 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8；293 K；0.2 M NaF, 22% PEG 3350
Resolution 1.11 Å R-free 0.177
7NZD Fourth SH3 domain of POSH (Plenty of SH3 Domains protein) Deposited 2021-03-23 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain AAA 829–888（60 aa）
Not recorded EDO 1,2-ETHANEDIOL × 1 PEG DI(HYDROXYETHYL)ETHER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6.5；293 K；0.1M MES pH 6.5, 23% PEG 4000
Resolution 1.45 Å R-free 0.228
9RFB Crystal Structure of Human Rac1 in Complex with the Scaffold Protein POSH (residues 321-348) Deposited 2025-06-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 321–348（28 aa）
Not recorded GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 1 MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；277 K；0.05 M phosphate, 20% (w/v) PEG 8000. RAC1 6 mg/mL , GMPPNP 1mM, POSH 3 mM
Resolution 1.85 Å R-free 0.226
9RFB Crystal Structure of Human Rac1 in Complex with the Scaffold Protein POSH (residues 321-348) Deposited 2025-06-04 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 321–348（28 aa）
Not recorded GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 1 MG MAGNESIUM ION × 1 PO4 PHOSPHATE ION × 2 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；277 K；0.05 M phosphate, 20% (w/v) PEG 8000. RAC1 6 mg/mL , GMPPNP 1mM, POSH 3 mM
Resolution 1.85 Å R-free 0.226
9RFF Crystal Structure of Human Rac1 Fused with the Scaffold Protein POSH (residues 319-371) Deposited 2025-06-04 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 319–371（53 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 1 MG MAGNESIUM ION × 1 MPD (4S)-2-METHYL-2,4-PENTANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277 K；0.12 M ethylene glycol, 0.1 M imidazole-MES pH 6.5, 37% (v/v) 2-methyl-2,4-pentanediol (MPD)-PEG 1000-PEG 3500 2 mg/mL Rac1-POSH
Resolution 1.25 Å R-free 0.164

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.