4NA7

Factor XIA in complex with the inhibitor 3'-[(2S,4R)-6-carbamimidoyl-4-methyl-4-phenyl-1,2,3,4-tetrahydroquinolin-2-yl]-4-carbamoyl-5'-[(3-methylbutanoyl)amino]biphenyl-2-carboxylic acid

• PDB DOI:  https://doi.org/10.2210/pdb4NA7/pdb

• Classification: HYDROLASE/HYDROLASE INHIBITOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2013-10-21 Released: 2014-02-12 
• Deposition Author(s): Wei, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.269 
• R-Value Work: 0.237 
• R-Value Observed: 0.241 

Literature

Tetrahydroquinoline Derivatives as Potent and Selective Factor XIa Inhibitors.

Quan, M.L., Wong, P.C., Wang, C., Woerner, F., Smallheer, J.M., Barbera, F.A., Bozarth, J.M., Brown, R.L., Harpel, M.R., Luettgen, J.M., Morin, P.E., Peterson, T., Ramamurthy, V., Rendina, A.R., Rossi, K.A., Watson, C.A., Wei, A., Zhang, G., Seiffert, D., Wexler, R.R.

(2014) J Med Chem 57: 955-969

• PubMed: 24405333 
• DOI: https://doi.org/10.1021/jm401670x
• Primary Citation of Related Structures:  
  4NA7, 4NA8, 4NA9


• PubMed Abstract: 
  

Antithrombotic agents that are inhibitors of factor XIa (FXIa) have the potential to demonstrate robust efficacy with a low bleeding risk profile. Herein, we describe a series of tetrahydroquinoline (THQ) derivatives as FXIa inhibitors. Compound 1 was identified as a potent and selective tool compound for proof of concept studies. It exhibited excellent antithrombotic efficacy in rabbit thrombosis models and did not prolong bleeding times. This demonstrates proof of concept for the FXIa mechanism in animal models with a reversible, small molecule inhibitor.

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Organizational Affiliation: 

Discovery Chemistry and Cardiovascular Biology, Research and Development, Bristol-Myers Squibb Company , 311 Pennington-Rocky Hill Road, Pennington, New Jersey 08543, United States.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 28.59 kDa 
• Atom Count: 1,950 
• Modelled Residue Count: 238 
• Deposited Residue Count: 244 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Coagulation factor XI	A	244	Homo sapiens	Mutation(s): 0  Gene Names: F11 EC: 3.4.21.27
UniProt & NIH Common Fund Data Resources
Find proteins for P03951 (Homo sapiens) Explore P03951  Go to UniProtKB:  P03951
PHAROS:  P03951

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
1T5	B [auth A]	3'-[(2S,4R)-6-carbamimidoyl-4-methyl-4-phenyl-1,2,3,4-tetrahydroquinolin-2-yl]-4-carbamoyl-5'-[(3-methylbutanoyl)amino]biphenyl-2-carboxylic acid C36 H37 N5 O4 PDUMJXCNOKHQKH-SVXHESJVSA-N
SO4	C [auth A], D [auth A], E [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Binding Affinity Annotations
ID	Source	Binding Affinity
1T5	BindingDB:  4NA7	Ki: min: 0.2, max: 230 (nM) from 3 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.269 
• R-Value Work: 0.237 
• R-Value Observed: 0.241 
• Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 44.249	α = 90
b = 104.96	β = 90
c = 143.998	γ = 90

Software Package:

Software Name	Purpose
BUSTER-TNT	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling
AMoRE	phasing
BUSTER	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-02-12 
Deposition Author(s): Wei, A.

Revision History  

• Version 1.0: 2014-02-12
  Type: Initial release
  
• Version 1.1: 2014-02-26
  Changes: Database references