4K18

Structure of PIM-1 kinase bound to 5-(4-cyanobenzyl)-N-(4-fluorophenyl)-7-hydroxypyrazolo[1,5-a]pyrimidine-3-carboxamide

• PDB DOI: https://doi.org/10.2210/pdb4K18/pdb

• Classification: TRANSFERASE/TRANSFERASE INHIBITOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2013-04-04 Released: 2013-05-15 
• Deposition Author(s): Murray, J.M., Wallweber, H., Steffek, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.220 
• R-Value Work: 0.184 
• R-Value Observed: 0.186 

Literature

Discovery of novel pyrazolo[1,5-a]pyrimidines as potent pan-Pim inhibitors by structure- and property-based drug design.

Wang, X., Magnuson, S., Pastor, R., Fan, E., Hu, H., Tsui, V., Deng, W., Murray, J., Steffek, M., Wallweber, H., Moffat, J., Drummond, J., Chan, G., Harstad, E., Ebens, A.J.

(2013) Bioorg Med Chem Lett 23: 3149-3153

• PubMed: 23623490 
• DOI: https://doi.org/10.1016/j.bmcl.2013.04.020
• Primary Citation of Related Structures:  
  4K0Y, 4K18, 4K1B


• PubMed Abstract: 
  

  Pim kinases are promising targets for the development of cancer therapeutics. Among the three Pim isoforms, Pim-2 is particularly important in multiple myeloma, yet is the most difficult to inhibit due to its high affinity for ATP. We identified compound 1 via high throughput screening. Using property-based drug design and co-crystal structures with Pim-1 kinase to guide analog design, we were able to improve potency against all three Pim isoforms including a significant 10,000-fold gain against Pim-2. Compound 17 is a novel lead with low picomolar potency on all three Pim kinase isoforms.

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Organizational Affiliation: 

Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, 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)

Macromolecule Content

• Total Structure Weight: 32.42 kDa 
• Atom Count: 2,431 
• Modelled Residue Count: 277 
• Deposited Residue Count: 277 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine/threonine-protein kinase pim-1	A	277	Homo sapiens	Mutation(s): 0  Gene Names: PIM-1, PIM1 EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for P11309 (Homo sapiens) Explore P11309  Go to UniProtKB:  P11309
PHAROS:  P11309 GTEx:  ENSG00000137193

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
1OB	C [auth A]	5-(4-cyanobenzyl)-N-(4-fluorophenyl)-7-hydroxypyrazolo[1,5-a]pyrimidine-3-carboxamide C21 H14 F N5 O2 GVDYBVYAFKPQRT-UHFFFAOYSA-N
PO4	B [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K

Binding Affinity Annotations
ID	Source	Binding Affinity
1OB	PDBBind:  4K18	Ki: 1.1 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.220 
• R-Value Work: 0.184 
• R-Value Observed: 0.186 
• Space Group: P 6₅

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 95.545	α = 90
b = 95.545	β = 90
c = 80.06	γ = 120

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
CBASS	data collection

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-05-15 
Deposition Author(s): Murray, J.M., Wallweber, H., Steffek, M.

Revision History  

• Version 1.0: 2013-05-15
  Type: Initial release
  
• Version 1.1: 2013-05-22
  Changes: Database references
• Version 1.2: 2024-02-28
  Changes: Data collection, Database references, Derived calculations