3Q32

Structure of Janus kinase 2 with a pyrrolotriazine inhibitor

• PDB DOI:  https://doi.org/10.2210/pdb3Q32/pdb

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


• Deposited: 2010-12-21 Released: 2011-02-16 
• Deposition Author(s): Sack, J.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.210 
• R-Value Work: 0.178 
• R-Value Observed: 0.178 

Literature

Pyrrolo[1,2-f]triazines as JAK2 inhibitors: Achieving potency and selectivity for JAK2 over JAK3.

Harikrishnan, L.S., Kamau, M.G., Wan, H., Inghrim, J.A., Zimmermann, K., Sang, X., Mastalerz, H.A., Johnson, W.L., Zhang, G., Lombardo, L.J., Poss, M.A., Trainor, G.L., Tokarski, J.S., Lorenzi, M.V., You, D., Gottardis, M.M., Baldwin, K.F., Lippy, J., Nirschl, D.S., Qiu, R., Miller, A.V., Khan, J., Sack, J.S., Purandare, A.V.

(2011) Bioorg Med Chem Lett 21: 1425-1428

• PubMed: 21282055 
• DOI: https://doi.org/10.1016/j.bmcl.2011.01.022
• Primary Citation of Related Structures:  
  3Q32


• PubMed Abstract: 
  

SAR studies of pyrrolo[1,2-f]triazines as JAK2 inhibitors is presented. Achieving JAK2 inhibition selectively over JAK3 is discussed.

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Organizational Affiliation: 

Bristol-Myers Squibb Co., Princeton, NJ 08543-4000, USA. [e-mail]

Biological Assembly 1  

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

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

Biological Assembly 2  

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

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

Macromolecule Content

• Total Structure Weight: 72.36 kDa 
• Atom Count: 5,039 
• Modelled Residue Count: 589 
• Deposited Residue Count: 602 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tyrosine-protein kinase JAK2	A, B	301	Homo sapiens	Mutation(s): 0  Gene Names: JAK2 EC: 2.7.10.2
UniProt & NIH Common Fund Data Resources
Find proteins for O60674 (Homo sapiens) Explore O60674  Go to UniProtKB:  O60674
PHAROS:  O60674

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
J2I	C [auth A], D [auth B]	2-(2,6-difluoro-4-methoxyphenyl)-1-(4-{4-[(3-methyl-1H-pyrazol-5-yl)amino]pyrrolo[2,1-f][1,2,4]triazin-2-yl}piperazin-1-yl)ethanone C23 H24 F2 N8 O2 CFXACTJFCDMPJK-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PTR	A, B	L-PEPTIDE LINKING	C9 H12 N O6 P		TYR

Binding Affinity Annotations
ID	Source	Binding Affinity
J2I	Binding MOAD:  3Q32	IC50: 1.8 (nM) from 1 assay(s)
	BindingDB:  3Q32	IC50: 1.8 (nM) from 1 assay(s)
	PDBBind:  3Q32	IC50: 1.8 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.210 
• R-Value Work: 0.178 
• R-Value Observed: 0.178 
• Space Group: P 4₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 110.59	α = 90
b = 110.59	β = 90
c = 69.96	γ = 90

Software Package:

Software Name	Purpose
BUSTER	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
PHASER	phasing
AUTOBUSTER	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-02-16 
Deposition Author(s): Sack, J.S.

Revision History  

• Version 1.0: 2011-02-16
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance