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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：O76094 New Search
7PDB entries
10Biological assembly
13chain/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
5M72 Structure of the human SRP68-72 protein-binding domain complex Deposited 2016-10-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 10–166（157 aa）
Not recorded SO4 SULFATE ION × 2 K POTASSIUM ION × 1 GOL GLYCEROL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；291.15 K；0.2 M K2SO4 20% (w/v) PEG 3350
Resolution 1.60 Å R-free 0.184
5M73 Structure of the human SRP S domain with SRP72 RNA-binding domain Deposited 2016-10-26 Assembly 1 Protein–RNA Heteromer；Protein × 3 PDB declaration: tetrameric（4） Consistent with all polymers
Chain D 512–668（157 aa）
Not recorded MG MAGNESIUM ION × 30 K POTASSIUM ION × 5 GOL GLYCEROL × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；17 % (w/v) PEG3350 0.1 M KF 0.1 M Tris pH 8.5
Resolution 3.40 Å R-free 0.280
5M73 Structure of the human SRP S domain with SRP72 RNA-binding domain Deposited 2016-10-26 Assembly 2 Protein–RNA Heteromer；Protein × 3 PDB declaration: tetrameric（4） Consistent with all polymers
Chain H 512–668（157 aa）
Not recorded MG MAGNESIUM ION × 15 K POTASSIUM ION × 5 GOL GLYCEROL × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277.15 K；17 % (w/v) PEG3350 0.1 M KF 0.1 M Tris pH 8.5
Resolution 3.40 Å R-free 0.280
5WRV Complex structure of human SRP72/SRP68 Deposited 2016-12-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–163（163 aa） Fragment：UNP residues 1-163
Not recorded ACT ACETATE ION × 2 GOL GLYCEROL × 5 SO4 SULFATE ION × 2 NA SODIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；298 K；(NH4)2SO4
Resolution 1.70 Å R-free 0.189
5WRW Structure of human apo-SRP72 Deposited 2016-12-04 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–163（163 aa） Fragment：UNP residues 1-163
Chain B 1–163（163 aa） Fragment：UNP residues 1-163
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277 K；(NH4)2SO4
Resolution 2.91 Å R-free 0.266
5WRW Structure of human apo-SRP72 Deposited 2016-12-04 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 1–163（163 aa） Fragment：UNP residues 1-163
Chain D 1–163（163 aa） Fragment：UNP residues 1-163
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277 K；(NH4)2SO4
Resolution 2.91 Å R-free 0.266
5WRW Structure of human apo-SRP72 Deposited 2016-12-04 Assembly 3 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 1–163（163 aa） Fragment：UNP residues 1-163
Chain F 1–163（163 aa） Fragment：UNP residues 1-163
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；277 K；(NH4)2SO4
Resolution 2.91 Å R-free 0.266
7NFX Mammalian ribosome nascent chain complex with SRP and SRP receptor in early state A Deposited 2021-02-08 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 55-meric（55） Consistent with all polymers
Chain z 1–671（671 aa）
Not recorded ZN ZINC ION × 5 MG MAGNESIUM ION × 2 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 3.20 Å
8QVW Cryo-EM structure of the peptide binding domain of human SRP68/72 Deposited 2023-10-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–671（671 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
8QVX Structure of the PBD of human SRP68/72 (cryoSPARC 3DFlex) Deposited 2023-10-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–671（671 aa）
Not recorded No recorded non-water small molecule 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.