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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：P00995 New Search
5PDB entries
7Biological assembly
7chain/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
1CGI THREE-DIMENSIONAL STRUCTURE OF THE COMPLEXES BETWEEN BOVINE CHYMOTRYPSINOGEN*A AND TWO RECOMBINANT VARIANTS OF HUMAN PANCREATIC SECRETORY TRYPSIN INHIBITOR (KAZAL-TYPE) Deposited 1991-10-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain I 24–79（56 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.30 Å
1CGJ THREE-DIMENSIONAL STRUCTURE OF THE COMPLEXES BETWEEN BOVINE CHYMOTRYPSINOGEN*A AND TWO RECOMBINANT VARIANTS OF HUMAN PANCREATIC SECRETORY TRYPSIN INHIBITOR (KAZAL-TYPE) Deposited 1991-10-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain I 24–79（56 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.30 Å
1HPT THREE-DIMENSIONAL STRUCTURE OF A RECOMBINANT VARIANT OF HUMAN PANCREATIC SECRETORY TRYPSIN INHIBITOR (KAZAL TYPE) Deposited 1992-03-27 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 24–79（56 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.30 Å
7QE8 Human cationic trypsin (TRY1) complexed with serine protease inhibitor Kazal type 1 (SPINK1) Deposited 2021-12-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 24–79（56 aa）
Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；293 K；1 ul protein solution (20 mg/mL in 20 mM HEPES, pH 7.4, 150 mM NaCl) + 1 ul well solution (15% PEG 4000, 0.3 M AS), cryo 15% PEG 4000, 0.3 M AS, 8% PEG 400
Resolution 2.90 Å R-free 0.243
7QE8 Human cationic trypsin (TRY1) complexed with serine protease inhibitor Kazal type 1 (SPINK1) Deposited 2021-12-01 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 24–79（56 aa）
Not recorded SO4 SULFATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；293 K；1 ul protein solution (20 mg/mL in 20 mM HEPES, pH 7.4, 150 mM NaCl) + 1 ul well solution (15% PEG 4000, 0.3 M AS), cryo 15% PEG 4000, 0.3 M AS, 8% PEG 400
Resolution 2.90 Å R-free 0.243
7QE9 Human cationic trypsin (TRY1) complexed with serine protease inhibitor Kazal type 1 N34S (SPINK1 N34S) Deposited 2021-12-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 24–79（56 aa）
Mutation：N34S SO4 SULFATE ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；293 K；1 uL protein solution (20 mg/mL in 20 mM Hepes pH 7.4, 150 mM NaCl) + 1 uL well solution (15% PEG 4000, 0.3 M AS), cryo: 15% PEG 4000, 0.3 M AS, 8% PEG 400
Resolution 2.10 Å R-free 0.234
7QE9 Human cationic trypsin (TRY1) complexed with serine protease inhibitor Kazal type 1 N34S (SPINK1 N34S) Deposited 2021-12-01 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 24–79（56 aa）
Mutation：N34S SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；293 K；1 uL protein solution (20 mg/mL in 20 mM Hepes pH 7.4, 150 mM NaCl) + 1 uL well solution (15% PEG 4000, 0.3 M AS), cryo: 15% PEG 4000, 0.3 M AS, 8% PEG 400
Resolution 2.10 Å R-free 0.234

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.