9PTI: Basic pancreatic trypsin inhibitor
Basic pancreatic trypsin inhibitor (met 52 oxidized). Determined by X-ray diffraction at 1.22 Å resolution. Released 15 Apr 1992.
- Method
- X-ray diffraction
- Resolution
- 1.22 Å
- Organism
- Bos taurus
- Chains
- 1
- Atoms
- 578
- Mol. weight
- 6.64 kDa
- Ligands
- PO4
- Released
- 15 Apr 1992
Explore 9PTI in 3D
Show helices and sheets
RCSB PDB
PDBe
Secondary structure: helices and β-sheets
9PTI contains 3 α-helices and 3 β-strands across 1 chain. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.
Chain A: 3 helices, 3 β-strands
| Element | Residues | Length | Sheet |
|---|
| α-helix | 3-6 | 4 | |
| α-helix | 8-9 | 2 | |
| β-strand | 18-24 | 7 | 1 |
| β-strand | 29-35 | 7 | 1 |
| β-strand | 45 | 1 | 1 |
| α-helix | 48-55 | 8 | |
Molecules and chains
| Molecule | Chains | Type | Length | Organism | UniProt |
|---|
| Bovine pancreatic trypsin inhibitor | A | protein | 58 | Bos taurus | P00974 (AlphaFold model) |
Sequence of entity 1 (A), FASTA
>9PTI_1 BOVINE PANCREATIC TRYPSIN INHIBITOR (chains A)
RPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTCGGA
Ligands and cofactors
| ID | Name | Formula | Copies |
|---|
| PO4 | Phosphate ion | O4 P | 1 |
Other PDB entries of the same protein (UniProt P00974 (AlphaFold model), which also has an AlphaFold model), best resolution first:
- 1G6X 0.86 Å, Ultra high resolution structure of bovine pancreatic trypsin inhibitor (BPTI) mutant…
- 1K6U 1.0 Å, Crystal Structure of Cyclic Bovine Pancreatic Trypsin Inhibitor
- 5PTI 1.0 Å, Structure of bovine pancreatic trypsin inhibitor. Results of joint neutron and X-ray…
- 1BPI 1.09 Å, The structure of bovine pancreatic trypsin inhibitor at 125K: definition of…
- 2ZJX 1.09 Å, Bovine pancreatic trypsin inhibitor (BPTI) containing only the [5,55] disulfide bond
- 2ZVX 1.09 Å, Structure of a BPTI-[5,55] variant containing Gly/Val at the 14/38th positions
- 5XX2 1.12 Å, A BPTI-[5,55] variant with C14GA38L mutations
- 5XX3 1.12 Å, A BPTI-[5,55] variant with C14GA38G mutations
- 7PH1 1.18 Å, Trypsin in complex with BPTI mutant (2S)-2-amino-4-monofluorobutanoic acid
- 4Y0Y 1.25 Å, Trypsin in complex with with BPTI
- 3P95 1.3 Å, Human mesotrypsin complexed with bovine pancreatic trypsin inhibitor variant…
- 3WNY 1.3 Å, A simplified BPTI variant with poly Lys amino acid tag (C3K) at the C-terminus
Browse structure collections
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