1TGS

THREE-DIMENSIONAL STRUCTURE OF THE COMPLEX BETWEEN PANCREATIC SECRETORY INHIBITOR (KAZAL TYPE) AND TRYPSINOGEN AT 1.8 ANGSTROMS RESOLUTION. STRUCTURE SOLUTION, CRYSTALLOGRAPHIC REFINEMENT AND PRELIMINARY STRUCTURAL INTERPRETATION

• PDB DOI: https://doi.org/10.2210/pdb1TGS/pdb

• Classification: COMPLEX (PROTEINASE/INHIBITOR)
• Organism(s): Bos taurus, Sus scrofa
• Mutation(s): No 


• Deposited: 1982-09-27 Released: 1983-01-18 
• Deposition Author(s): Bolognesi, M., Gatti, G., Menegatti, E., Guarneri, M., Marquart, M., Papamokos, E., Huber, R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Work: 0.186 

Literature

Three-dimensional structure of the complex between pancreatic secretory trypsin inhibitor (Kazal type) and trypsinogen at 1.8 A resolution. Structure solution, crystallographic refinement and preliminary structural interpretation.

Bolognesi, M., Gatti, G., Menagatti, E., Guarneri, M., Marquart, M., Papamokos, E., Huber, R.

(1982) J Mol Biol 162: 839-868

• PubMed: 7169635 
• DOI: https://doi.org/10.1016/0022-2836(82)90550-2
• Primary Citation of Related Structures:  
  1TGS

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 30.18 kDa 
• Atom Count: 2,230 
• Modelled Residue Count: 281 
• Deposited Residue Count: 285 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TRYPSINOGEN	A [auth Z]	229	Bos taurus	Mutation(s): 0  EC: 3.4.21.4
UniProt
Find proteins for P00760 (Bos taurus) Explore P00760  Go to UniProtKB:  P00760

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
PANCREATIC SECRETORY TRYPSIN INHIBITOR (KAZAL TYPE)	B [auth I]	56	Sus scrofa	Mutation(s): 0
UniProt
Find proteins for P00998 (Sus scrofa) Explore P00998  Go to UniProtKB:  P00998

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	C [auth Z]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
CA	D [auth Z]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Work: 0.186 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 67.1	α = 90
b = 75.5	β = 90
c = 66.9	γ = 90

Structure Validation

Entry History 

Deposition Data

• Released Date: 1983-01-18 
Deposition Author(s): Bolognesi, M., Gatti, G., Menegatti, E., Guarneri, M., Marquart, M., Papamokos, E., Huber, R.

Revision History  

• Version 1.0: 1983-01-18
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-06-05
  Changes: Data collection, Database references, Derived calculations, Other
• Version 1.4: 2024-11-06
  Changes: Structure summary