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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：A0A0C4DFQ5 New Search
6PDB entries
13Biological assembly
13chain/assembly records
Main Difference Dimensions in This Set
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
6O21 Crystal Structure of Human KLK4 in Complex With Cleaved SFTI-FCQR(Asn14)[1,14] Inhibitor Deposited 2019-02-22 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 31–253（223 aa）
Not recorded SO4 SULFATE ION × 3 MPD (4S)-2-METHYL-2,4-PENTANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；293 K；30 % (w/v) PEG 8000, 0.1 M sodium acetate, 0.2 M lithium sulfate, pH 4.5
Resolution 1.15 Å R-free 0.163
6O21 Crystal Structure of Human KLK4 in Complex With Cleaved SFTI-FCQR(Asn14)[1,14] Inhibitor Deposited 2019-02-22 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 31–253（223 aa）
Not recorded SO4 SULFATE ION × 3 MPD (4S)-2-METHYL-2,4-PENTANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；293 K；30 % (w/v) PEG 8000, 0.1 M sodium acetate, 0.2 M lithium sulfate, pH 4.5
Resolution 1.15 Å R-free 0.163
7JOD Crystal structure of BbKI complexed with Human Kallikrein 4 Deposited 2020-08-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 31–253（223 aa）
Not recorded 2PE NONAETHYLENE GLYCOL × 3 CD CADMIUM ION × 2 CL CHLORIDE ION × 2 SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；2.4M Ammonium Sulfate, 2%PEG400, 10mM CdCl2
Resolution 1.33 Å R-free 0.133
7JOE Crystal structure of BbKI complexed with Human Kallikrein 4 Deposited 2020-08-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 31–253（223 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；25% PEG3350, 0.2M NaCl
Resolution 2.60 Å R-free 0.226
7JOS Crystal structure of BbKI complexed with Human Kallikrein 4 Deposited 2020-08-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 31–253（223 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；25% PEG3350, 0.2M NaCl
Resolution 2.10 Å R-free 0.212
7JOS Crystal structure of BbKI complexed with Human Kallikrein 4 Deposited 2020-08-07 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 31–253（223 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；25% PEG3350, 0.2M NaCl
Resolution 2.10 Å R-free 0.212
7JOS Crystal structure of BbKI complexed with Human Kallikrein 4 Deposited 2020-08-07 Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 31–253（223 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；25% PEG3350, 0.2M NaCl
Resolution 2.10 Å R-free 0.212
7JOS Crystal structure of BbKI complexed with Human Kallikrein 4 Deposited 2020-08-07 Assembly 4 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain G 31–253（223 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；25% PEG3350, 0.2M NaCl
Resolution 2.10 Å R-free 0.212
7JOS Crystal structure of BbKI complexed with Human Kallikrein 4 Deposited 2020-08-07 Assembly 5 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain I 31–253（223 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；25% PEG3350, 0.2M NaCl
Resolution 2.10 Å R-free 0.212
7JOS Crystal structure of BbKI complexed with Human Kallikrein 4 Deposited 2020-08-07 Assembly 6 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain K 31–253（223 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；25% PEG3350, 0.2M NaCl
Resolution 2.10 Å R-free 0.212
7JOS Crystal structure of BbKI complexed with Human Kallikrein 4 Deposited 2020-08-07 Assembly 7 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain M 31–253（223 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；25% PEG3350, 0.2M NaCl
Resolution 2.10 Å R-free 0.212
7JOW Crystal structure of BbKI complexed with Human Kallikrein 4 Deposited 2020-08-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 31–253（223 aa）
Not recorded CD CADMIUM ION × 1 2PE NONAETHYLENE GLYCOL × 1 URE UREA × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；293 K；2.4M Ammounium Sulfate, 2% PEG400 10mM CdCl2
Resolution 1.91 Å R-free 0.207
7JQV Crystal structure of the R64F mutant of Bauhinia Bauhinioides Kallikrein Inhibitor complexed with Human Kallikrein 4 Deposited 2020-08-11 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 31–253（223 aa）
Not recorded 2PE NONAETHYLENE GLYCOL × 3 CL CHLORIDE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；2.0M Ammonium Sulfate, 2% PEG400, 10mM CdCl2
Resolution 2.10 Å R-free 0.197

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.