Rho-associated protein kinase 1 (ROCK 1) in complex with a pyridine thiazole piperidine inhibitor

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.239 

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Ligand Structure Quality Assessment 

This is version 1.3 of the entry. See complete history


ROCK inhibitors 2. Improving potency, selectivity and solubility through the application of rationally designed solubilizing groups.

Gao, H.Marhefka, C.Jacobs, M.D.Cao, J.Bandarage, U.K.Green, J.

(2018) Bioorg Med Chem Lett 

  • DOI: https://doi.org/10.1016/j.bmcl.2018.06.043
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Solubilizing groups have been frequently appended to kinase inhibitor drug molecules when solubility is insufficient for pharmaceutical development. Such groups are usually located at substitution sites that have minimal impact on target activity. In this report we describe the incorporation of solubilizing groups in a class of Rho kinase (ROCK) inhibitors that not only confer improved solubility, but also enhance target potency and selectivity against a closely related kinase, PKA.

  • Organizational Affiliation

    Vertex Pharmaceuticals, Incorporated, 50 Northern Avenue, Boston, MA 02210, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Rho-associated protein kinase 1
A, B
415Homo sapiensMutation(s): 0 
Gene Names: ROCK1
UniProt & NIH Common Fund Data Resources
Find proteins for Q13464 (Homo sapiens)
Explore Q13464 
Go to UniProtKB:  Q13464
PHAROS:  Q13464
GTEx:  ENSG00000067900 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13464
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 65R

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
C24 H28 N4 O2 S
Binding Affinity Annotations 
IDSourceBinding Affinity
65R BindingDB:  5HVU Ki: 13 (nM) from 1 assay(s)
IC50: 7 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.239 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 181.82α = 90
b = 181.82β = 90
c = 90.6γ = 120
Software Package:
Software NamePurpose
d*TREKdata reduction
d*TREKdata scaling
PDB_EXTRACTdata extraction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

  • Released Date: 2017-02-08 
  • Deposition Author(s): Jacobs, M.J.

Revision History  (Full details and data files)

  • Version 1.0: 2017-02-08
    Type: Initial release
  • Version 1.1: 2017-11-01
    Changes: Author supporting evidence
  • Version 1.2: 2018-07-18
    Changes: Data collection, Database references
  • Version 1.3: 2023-09-27
    Changes: Data collection, Database references, Refinement description