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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：P07288 New Search
5PDB entries
6Biological assembly
6chain/assembly records
Main Difference Dimensions in This Set
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
2ZCH Crystal structure of human prostate specific antigen complexed with an activating antibody Deposited 2007-11-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain P 25–261（237 aa） Fragment：UNP residues 25-261
Not recorded NDG 2-acetamido-2-deoxy-alpha-D-glucopyranose × 2 CL CHLORIDE ION × 1 PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.2；293 K；14% MPEG 550, 100mM HEPES, pH7.2, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.83 Å R-free 0.270
2ZCK Crystal structure of a ternary complex between PSA, a substrat-acyl intermediate and an activating antibody Deposited 2007-11-09 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain P 25–261（237 aa） Fragment：UNP residues 25-261
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.2；293 K；crystal grown in 14% MPEG550, 100mM HEPES (pH7.2), then soaked in PEG400, 100mM Tris-HCl (pH7.3), 10mM ZnCl2, 0.28 mg/ml Mu-KGISSQY-AFC, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 3.10 Å R-free 0.275
2ZCL Crystal structure of human prostate specific antigen complexed with an activating antibody Deposited 2007-11-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain P 25–261（237 aa） Fragment：UNP residues 25-261
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.2；293 K；crystals grown in 14% MPEG550, 100mM HEPES (pH7.2), then soaked in 33% PEG400, 100mM MES (pH5.5), 10mM ZnCl2, 0.28mg/ml Mu-KGISSQY-AFC, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 3.25 Å R-free 0.251
3QUM Crystal structure of human prostate specific antigen (PSA) in Fab sandwich with a high affinity and a PCa selective antibody Deposited 2011-02-24 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain P 25–261（237 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；295 K；Protein solution: 20 ul 5D3D11 at 10.7 mg/ml and 10 ul PSA at 5 mg/ml + 31 ul 5D5A5 at 6.7mg/ml in PBS. against a precipitant of 10% PEG 4,000, 20% ethylene glycol, 100 mM Na,K phosphate. Drops consisted of 1 ul protein + precipitant equilibrated by vapor diffusion. Streak seeding and macro seeding were used, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 295K
Resolution 3.20 Å R-free 0.294
3QUM Crystal structure of human prostate specific antigen (PSA) in Fab sandwich with a high affinity and a PCa selective antibody Deposited 2011-02-24 Assembly 2 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain Q 25–261（237 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；295 K；Protein solution: 20 ul 5D3D11 at 10.7 mg/ml and 10 ul PSA at 5 mg/ml + 31 ul 5D5A5 at 6.7mg/ml in PBS. against a precipitant of 10% PEG 4,000, 20% ethylene glycol, 100 mM Na,K phosphate. Drops consisted of 1 ul protein + precipitant equilibrated by vapor diffusion. Streak seeding and macro seeding were used, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 295K
Resolution 3.20 Å R-free 0.294
9ZJQ Human KLK3 following acylation by CDD-3290 Deposited 2025-12-05 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 25–261（237 aa）
Not recorded A1C2U 1H-1,3-benzimidazole-5-carbaldehyde × 1 EDO 1,2-ETHANEDIOL × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；298 K；1.4 M sodium malonate pH 7.0. Protein (30 mg/mL) was co-crystallized as 1 uL sitting drop (1:1 protein:precipitant)
Resolution 2.20 Å R-free 0.232

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.