3NCZ

X-Ray Co-structure of Rho-Associated Protein Kinase (ROCK1) with a potent 2H-isoquinolin-1-one inhibitor

• PDB DOI: https://doi.org/10.2210/pdb3NCZ/pdb

• Classification: TRANSFERASE/TRANSFERASE INHIBITOR
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2010-06-06 Released: 2010-12-08 
• Deposition Author(s): Li, X.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.328 
• R-Value Work: 0.255 
• R-Value Observed: 0.259 

Literature

Substituted 2H-isoquinolin-1-ones as potent Rho-kinase inhibitors: Part 2, optimization for blood pressure reduction in spontaneously hypertensive rats.

Ginn, J.D., Bosanac, T., Chen, R., Cywin, C., Hickey, E., Kashem, M., Kerr, S., Kugler, S., Li, X., Prokopowicz, A., Schlyer, S., Smith, J.D., Turner, M.R., Wu, F., Young, E.R.

(2010) Bioorg Med Chem Lett 20: 5153-5156

• PubMed: 20678931 
• DOI: https://doi.org/10.1016/j.bmcl.2010.07.014
• Primary Citation of Related Structures:  
  3NCZ


• PubMed Abstract: 
  

  Phenylglycine substituted isoquinolones 1 and 2 have previously been described as potent dual ROCK1/ROCK2 inhibitors. Here we describe the further SAR of this series to improve metabolic stability and rat oral exposure. Piperidine analog 20 which demonstrates sustained blood pressure normalization in an SHR blood pressure reduction model was identified through this effort.

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Organizational Affiliation: 

Department of Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT 06877, USA. [e-mail]

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 193.33 kDa 
• Atom Count: 12,831 
• Modelled Residue Count: 1,564 
• Deposited Residue Count: 1,660 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Rho-associated protein kinase 1	A, B, C, D	415	Homo sapiens	Mutation(s): 0  Gene Names: ROCK1 EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for Q13464 (Homo sapiens) Explore Q13464  Go to UniProtKB:  Q13464
PHAROS:  Q13464 GTEx:  ENSG00000067900

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
3NC	E [auth A], F [auth B], G [auth C], H [auth D]	cis-4-amino-N-(7-chloro-1-oxo-1,2-dihydroisoquinolin-6-yl)cyclohexanecarboxamide C16 H18 Cl N3 O2 WHXKGHDWNQPZNP-JGZJWPJOSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
3NC	PDBBind:  3NCZ	IC50: 15 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.328 
• R-Value Work: 0.255 
• R-Value Observed: 0.259 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 161.439	α = 90
b = 80.863	β = 117.22
c = 166.619	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
CNX	refinement
MAR345dtb	data collection
d*TREK	data reduction
d*TREK	data scaling
CNX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-12-08 
Deposition Author(s): Li, X.

Revision History  

• Version 1.0: 2010-12-08
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2019-07-17
  Changes: Data collection, Refinement description
• Version 1.3: 2024-02-21
  Changes: Data collection, Database references, Derived calculations