Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

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

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

Macromolecule Content

• Total Structure Weight: 34237.83 
• Atom Count: 2233 
• Residue Count: 298 
• Unique protein chains: 1

2BTR

STRUCTURE OF CDK2 COMPLEXED WITH PNU-198873

• DOI: 10.2210/pdb2BTR/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Trichoplusia ni


• Deposited: 2005-06-06 Released: 2005-11-09 
• Deposition Author(s): Vulpetti, A., Casale, E., Roletto, F., Amici, R., Villa, M., Pevarello, P.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.272 
• R-Value Work: 0.223 

Literature

Structure-Based Drug Design to the Discovery of New 2-Aminothiazole Cdk2 Inhibitors.

Vulpetti, A., Casale, E., Roletto, F., Amici, R., Villa, M., Pevarello, P.

(2006) J.Mol.Graph.Model. 24: 341

• PubMed: 16260160 
• DOI: 10.1016/j.jmgm.2005.09.012
• Primary Citation of Related Structures:  
  2BTS


• PubMed Abstract: 
  

N-(5-Bromo-1,3-thiazol-2-yl)butanamide (compound 1) was found active (IC50=808 nM) in a high throughput screening (HTS) for CDK2 inhibitors. By exploiting crystal structures of several complexes between CDK2 and inhibitors and applying structure-based drug design (SBDD), we rapidly discovered a very potent and selective CDK2 inhibitor 4-[(5-isopropyl-1,3-thiazol-2-yl)amino] benzenesulfonamide (compound 4, IC50=20 nM). The syntheses, structure-based analog design, kinases inhibition data and X-ray crystallographic structures of CDK2/inhibitor complexes are reported.

---

Organizational Affiliation: 

Department of Chemistry, Nerviano Medical Sciences, Discovery Research Oncology, Viale Pasteur 10, 20014 Nerviano (MI), Italy. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
CELL DIVISION PROTEIN KINASE 2	A	298	Homo sapiens	Mutation(s): 0  Gene Names: CDK2 (CDKN2) EC: 2.7.11.22
Find proteins for P24941 (Homo sapiens) Go to Gene View: CDK2 Go to UniProtKB:  P24941

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
U73	A	N-(5-ISOPROPYL-THIAZOL-2-YL)-2-PYRIDIN-3-YL-ACETAMIDE C13 H15 N3 O S WQZOOPQQADNJEG-UHFFFAOYSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
U73	IC50: 95 nM BINDINGMOAD
U73	IC50: 95 nM PDBBIND

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.272 
• R-Value Work: 0.223 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 53.215	α = 90.00
b = 71.615	β = 90.00
c = 71.588	γ = 90.00

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-06-06 
• Released Date: 2005-11-09 
• Deposition Author(s): Vulpetti, A., Casale, E., Roletto, F., Amici, R., Villa, M., Pevarello, P.

Revision History 

• Version 1.0: 2005-11-09
  Type: Initial release
• Version 1.1: 2011-05-08
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance
• Version 1.3: 2019-04-03
  Type: Data collection, Other, Source and taxonomy