1CO7

R117H mutant rat anionic trypsin complexed with bovine pancreatic trypsin inhibitor (BPTI)

• PDB DOI: https://doi.org/10.2210/pdb1CO7/pdb

• Classification: HYDROLASE/HYDROLASE INHIBITOR
• Organism(s): Rattus norvegicus, Bos taurus
• Mutation(s): Yes 


• Deposited: 1999-06-07 Released: 2003-01-07 
• Deposition Author(s): Stamper, G.F., Ringe, D., Hedstrom, L.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.210 
• R-Value Work: 0.208 
• R-Value Observed: 0.208 

Starting Model: experimental

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 36.92 kDa 
• Atom Count: 2,099 
• Modelled Residue Count: 264 
• Deposited Residue Count: 344 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TRYPSIN II	A [auth E]	245	Rattus norvegicus	Mutation(s): 1  EC: 3.4.21.4
UniProt
Find proteins for P00763 (Rattus norvegicus) Explore P00763  Go to UniProtKB:  P00763

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
BOVINE PANCREATIC TRYPSIN INHIBITOR	B [auth I]	99	Bos taurus	Mutation(s): 0
UniProt
Find proteins for P00974 (Bos taurus) Explore P00974  Go to UniProtKB:  P00974

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	C [auth E]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.210 
• R-Value Work: 0.208 
• R-Value Observed: 0.208 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 92.696	α = 90
b = 92.696	β = 90
c = 62.406	γ = 120

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-01-07 
Deposition Author(s): Stamper, G.F., Ringe, D., Hedstrom, L.

Revision History  

• Version 1.0: 2003-01-07
  Type: Initial release
  
• Version 1.1: 2007-10-16
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2018-04-04
  Changes: Data collection
• Version 1.4: 2023-08-09
  Changes: Data collection, Database references, Derived calculations, Refinement description