3NTG

Crystal structure of COX-2 with selective compound 23d-(R)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.211 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 2.1 of the entry. See complete history


Literature

The novel benzopyran class of selective cyclooxygenase-2 inhibitors. Part 2: The second clinical candidate having a shorter and favorable human half-life.

Wang, J.L.Limburg, D.Graneto, M.J.Springer, J.Hamper, J.R.Liao, S.Pawlitz, J.L.Kurumbail, R.G.Maziasz, T.Talley, J.J.Kiefer, J.R.Carter, J.

(2010) Bioorg Med Chem Lett 20: 7159-7163

  • DOI: https://doi.org/10.1016/j.bmcl.2010.07.054
  • Primary Citation of Related Structures:  
    3LN0, 3LN1, 3MQE, 3NTG

  • PubMed Abstract: 

    In this Letter, we provide the structure-activity relationships, optimization of design, testing criteria, and human half-life data for a series of selective COX-2 inhibitors. During the course of our structure-based drug design efforts, we discovered two distinct binding modes within the COX-2 active site for differently substituted members of this class. The challenge of a undesirably long human half-life for the first clinical candidate 1t(1/2)=360 h was addressed by multiple strategies, leading to the discovery of 29b-(S) (SC-75416) with t(1/2)=34 h.


  • Organizational Affiliation

    Pfizer Global Research and Development, Chesterfield, MO 63017, USA. jl47wang@yahoo.com


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Prostaglandin G/H synthase 2
A, B, C, D
552Mus musculusMutation(s): 0 
Gene Names: Cox-2Cox2mCG_5001Pghs-bPtgs2Tis10
EC: 1.14.99.1
UniProt
Find proteins for Q05769 (Mus musculus)
Explore Q05769 
Go to UniProtKB:  Q05769
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ05769
Glycosylation
Glycosylation Sites: 2Go to GlyGen: Q05769-1
Sequence Annotations
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
E, F, G, H
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download Ideal Coordinates CCD File 
I [auth A],
M [auth B],
P [auth C],
S [auth D]
PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
D72
Query on D72

Download Ideal Coordinates CCD File 
L [auth A],
O [auth B],
R [auth C],
V [auth D]
(2R)-6,8-dichloro-7-(2-methylpropoxy)-2-(trifluoromethyl)-2H-chromene-3-carboxylic acid
C15 H13 Cl2 F3 O4
FQKMILFVTQADHR-CYBMUJFWSA-N
BOG
Query on BOG

Download Ideal Coordinates CCD File 
K [auth A],
U [auth D]
octyl beta-D-glucopyranoside
C14 H28 O6
HEGSGKPQLMEBJL-RKQHYHRCSA-N
NAG
Query on NAG

Download Ideal Coordinates CCD File 
J [auth A],
N [auth B],
Q [auth C],
T [auth D]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
D72 BindingDB:  3NTG IC50: 28 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.211 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 180.268α = 90
b = 134.273β = 90
c = 122.615γ = 90
Software Package:
Software NamePurpose
MAR345dtbdata collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-10-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2023-12-27
    Changes: Data collection, Database references, Structure summary