Biological Assembly 1  

 3D View: Structure | Electron Density | Validation Report | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 23.75 kDa 
• Atom Count: 1864 
• Modelled Residue Count: 223 
• Deposited Residue Count: 223 
• Unique protein chains: 1

1QCP

CRYSTAL STRUCTURE OF THE RWJ-51084 BOVINE PANCREATIC BETA-TRYPSIN AT 1.8 A

• DOI: 10.2210/pdb1QCP/pdb

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


• Deposited: 1999-05-10 Released: 1999-05-21 
• Deposition Author(s): Recacha, R., Carson, M., Costanzo, M.J., Maryanoff, B., Chattopadhyay, D.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.237 
• R-Value Work: 0.175 

Literature

Structure of the RWJ-51084-bovine pancreatic beta-trypsin complex at 1.8 A.

Recacha, R., Carson, M., Costanzo, M.J., Maryanoff, B., DeLucas, L.J., Chattopadhyay, D.

(1999) Acta Crystallogr D Biol Crystallogr 55: 1785-1791

• PubMed: 10531473 
• DOI: 10.1107/s0907444999008732
• Primary Citation of Related Structures:  
  1QCP


• PubMed Abstract: 
  

The three-dimensional structure of bovine pancreatic trypsin complexed with the inhibitor RWJ-51084 has been determined at 1.8 A resolution. These crystals belong to the trigonal space group P3(1)21, with unit-cell parameters a = b = 53.43, c = 107.76 A. The refined R and R(free) values are 0.175 and 0.237, respectively. The carbonyl group bonded to the benzothiazole group of the inhibitor is covalently linked to the hydroxyl O atom of Ser195, forming a tetrahedral intermediate hemiketal structure. The other carbonyl O atom of the inhibitor forms a hydrogen bond with the Gln192 side-chain amide group. The benzothiazole group is oriented with the aromatic N atom of RWJ-51084 accepting a hydrogen bond from His57 NE2. The arginine side chain of the inhibitor extends into the deep and narrow pocket of the S1 specificity site of trypsin, forming a network of hydrogen bonds.

---

Organizational Affiliation: 

Center for Macromolecular Crystallography, University of Alabama at Birmingham, Birmingham, Alabama 35294-0005, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (BETA-TRYPSIN PROTEIN)	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 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
RWJ (Subject of Investigation/LOI)	C [auth A]	CYCLOPENTANECARBOXYLIC ACID [1-(BENZOTHIAZOLE-2-CARBONYL)-4-GUANIDINO-BUTYL]-AMIDE C19 H25 N5 O2 S NQABUEUFRXDDFI-AWEZNQCLSA-N
CA	B [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
RWJ	PDBBind:  1QCP	Ki: 30 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.237 
• R-Value Work: 0.175 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.43	α = 90
b = 54.43	β = 90
c = 107.76	γ = 120

Software Package:

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

Structure Validation

Ligand Structure Quality Assessment  

Entry History 

Deposition Data

• Deposited Date: 1999-05-10 
• Released Date: 1999-05-21 
Deposition Author(s): Recacha, R., Carson, M., Costanzo, M.J., Maryanoff, B., Chattopadhyay, D.

Revision History  

• Version 1.0: 1999-05-21
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance