1TYN

ATOMIC STRUCTURE OF THE TRYPSIN-CYCLOTHEONAMIDE A COMPLEX: LESSONS FOR THE DESIGN OF SERINE PROTEASE INHIBITORS

• PDB DOI: https://doi.org/10.2210/pdb1TYN/pdb

• Classification: HYDROLASE(SERINE PROTEASE)
• Organism(s): Bos taurus
• Mutation(s): No 


• Deposited: 1994-09-19 Released: 1995-01-26 
• Deposition Author(s): Lee, A.Y., Hagihara, M., Karmacharya, R., Albers, M.W., Schreiber, S.L., Clardy, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.222 
• R-Value Work: 0.169 
• R-Value Observed: 0.169 

Literature

Atomic Structure of the Trypsin-Cyclotheonamide a Complex: Lessons for the Design of Serine Protease Inhibitors

Lee, A.Y., Hagihara, M., Karmacharya, R., Albers, M.W., Schreiber, S.L., Clardy, J.

(1993) J Am Chem Soc 115: 12619

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 24.06 kDa 
• Atom Count: 1,803 
• Modelled Residue Count: 223 
• Deposited Residue Count: 223 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BETA-TRYPSIN	A	223	Bos taurus	Mutation(s): 0
UniProt
Find proteins for P00760 (Bos taurus) Explore P00760  Go to UniProtKB:  P00760

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CTA	B [auth A]	CYCLOTHEONAMIDE A C36 H45 N9 O8 CDWXSPKJKIUEQF-BIXWYCRZSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
CTA	PDBBind:  1TYN	Ki: 0.2 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.222 
• R-Value Work: 0.169 
• R-Value Observed: 0.169 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 71.73	α = 90
b = 71.73	β = 90
c = 88.82	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-01-26 
Deposition Author(s): Lee, A.Y., Hagihara, M., Karmacharya, R., Albers, M.W., Schreiber, S.L., Clardy, J.

Revision History  

• Version 1.0: 1995-01-26
  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