1RXP

STRUCTURE OF TRYPSIN (ORTHORHOMBIC) WITH 1-(4-TERT-BUTYLCARBAMOYL- PIPERAZINE-1-CARBONYL)-3-(3-GUANIDINO-PROPYL)-4-OXO-AZETIDINE-2-CARBOXYLIC ACID

• PDB DOI: https://doi.org/10.2210/pdb1RXP/pdb

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


• Deposited: 2003-12-18 Released: 2004-06-08 
• Deposition Author(s): Bisacchi, G.S., Jacobson, B.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.222 
• R-Value Work: 0.195 
• R-Value Observed: 0.195 

Literature

Solid-phase synthesis and SAR of 4-carboxy-2-azetidinone mechanism-based tryptase inhibitors

Sutton, J.C., Bolton, S.A., Davis, M.E., Hartl, K.S., Jacobson, B., Mathur, A., Ogletree, M.L., Slusarchyk, W.A., Zahler, R., Seiler, S.M., Bisacchi, G.S.

(2004) Bioorg Med Chem Lett 14: 2233-2239

• PubMed: 15081015 
• DOI: https://doi.org/10.1016/j.bmcl.2004.02.012
• Primary Citation of Related Structures:  
  1RXP


• PubMed Abstract: 
  

  A series of nonguanidine N1-activated C4-carboxy azetidinone tryptase inhibitors was prepared by solid-phase methodology to quickly assess the SAR associated with distal functionality on the N1-activating group. From these studies, potent inhibitors with improved specificity were discovered.

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Organizational Affiliation: 

The Bristol-Myers Squibb Pharmaceutical Research Institute, PO Box 4000, Princeton, NJ 08543-4000, USA. [e-mail]

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 23.89 kDa 
• Atom Count: 1,891 
• Modelled Residue Count: 223 
• Deposited Residue Count: 223 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TRYPSIN	A	223	Bos taurus	Mutation(s): 0  EC: 3.4.21.4
UniProt
Find proteins for P00760 (Bos taurus) Explore P00760  Go to UniProtKB:  P00760

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
169	D [auth A]	1-(4-TERT-BUTYLCARBAMOYL-PIPERAZINE-1-CARBONYL)-3-(3-GUANIDINO-PROPYL)-4-OXO-AZETIDINE-2-CARBOXYLIC ACID C18 H33 N7 O5 BVNQCAHTTOIOEK-STQMWFEESA-N
SO4	C [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
CA	B [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
169	PDBBind:  1RXP	IC50: 72 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.222 
• R-Value Work: 0.195 
• R-Value Observed: 0.195 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.29	α = 90
b = 58.25	β = 90
c = 66.68	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-06-08 
Deposition Author(s): Bisacchi, G.S., Jacobson, B.

Revision History  

• Version 1.0: 2004-06-08
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance