Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Exploring Subsite Selectivity within Plasmodium vivax N-Myristoyltransferase Using Pyrazole-Derived Inhibitors

Journal Article · · Journal of Medicinal Chemistry
 [1];  [2];  [2];  [3];  [4];  [5];  [6];  [2];  [5]
  1. Univ. of Gothenburg (Sweden); Univ. of Campinas (UNICAMP), Sao Paulo (Brazil)
  2. Seattle Structural Genomics Center for Infectious Disease (SSGCID), Seattle, WA (United States); Seattle Children’s Research Institute, Seattle, WA (United States)
  3. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  4. Seattle Structural Genomics Center for Infectious Disease (SSGCID), Seattle, WA (United States); Seattle Children’s Research Institute, Seattle, WA (United States); Univ. of Washington, Seattle, WA (United States)
  5. Univ. of Gothenburg (Sweden)
  6. Seattle Children’s Research Institute, Seattle, WA (United States); Univ. of Washington, Seattle, WA (United States)

N-myristoyltransferase (NMT) is a promising antimalarial drug target. Despite biochemical similarities between Plasmodium vivax and human NMTs, our recent research demonstrated that high selectivity is achievable. Herein, we report PvNMT-inhibiting compounds aimed at identifying novel mechanisms of selectivity. Various functional groups are appended to a pyrazole moiety in the inhibitor to target a pocket formed beneath the peptide binding cleft. The inhibitor core group polarity, lipophilicity, and size are also varied to probe the water structure near a channel. Selectivity index values range from 0.8 to 125.3. Cocrystal structures of two selective compounds, determined at 1.97 and 2.43 Å, show that extensions bind the targeted pocket but with different stabilities. A bulky naphthalene moiety introduced into the core binds next to instead of displacing protein-bound waters, causing a shift in the inhibitor position and expanding the binding site. Our structure-activity data provide a conceptual foundation for guiding future inhibitor optimizations.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Institute of General Medical Sciences (NIGMS)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2447948
Journal Information:
Journal of Medicinal Chemistry, Journal Name: Journal of Medicinal Chemistry Journal Issue: 9 Vol. 67; ISSN 0022-2623
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (48)

Formation of heterocycles by the Mitsunobu reaction. Stereoselective synthesis of (+)-α-skytanthine journal April 1996
Protein farnesyl and N-myristoyl transferases: piggy-back medicinal chemistry targets for the development of antitrypanosomatid and antimalarial therapeutics journal February 2003
Design and synthesis of novel benzofurans as a new class of antifungal agents targeting fungal N -myristoyltransferase. Part 1 journal July 2001
A fluorescence-based assay for N-myristoyltransferase activity journal February 2012
Structure-Guided Identification of Resistance Breaking Antimalarial N‑Myristoyltransferase Inhibitors journal July 2019
N-Myristoyltransferase from Leishmania donovani: Structural and Functional Characterisation of a Potential Drug Target for Visceral Leishmaniasis journal March 2010
Protein production by auto-induction in high-density shaking cultures journal May 2005
Theoretical Implications of a Pre-Erythrocytic Plasmodium vivax Vaccine for Preventing Relapses journal April 2017
How To Design Selective Ligands for Highly Conserved Binding Sites: A Case Study Using N-Myristoyltransferases as a Model System journal August 2019
Identification of Selective Inhibitors of Plasmodium N-Myristoyltransferase by High-Throughput Screening journal December 2019
N -Myristoylation as a Drug Target in Malaria: Exploring the Role of N -Myristoyltransferase Substrates in the Inhibitor Mode of Action journal January 2018
Drug Evolution Concept in Drug Design:  1. Hybridization Method journal December 2004
Discovery of Plasmodium vivax N -Myristoyltransferase Inhibitors: Screening, Synthesis, and Structural Characterization of their Binding Mode journal March 2012
Design and Synthesis of Inhibitors of Plasmodium falciparumN -Myristoyltransferase, A Promising Target for Antimalarial Drug Discovery journal September 2012
Design and Synthesis of High Affinity Inhibitors of Plasmodium falciparum and Plasmodium vivax N -Myristoyltransferases Directed by Ligand Efficiency Dependent Lipophilicity (LELP) journal March 2014
Comparative genomics of the neglected human malaria parasite Plasmodium vivax journal October 2008
N-myristoyltransferase inhibitors as new leads to treat sleeping sickness journal April 2010
Validation of N-myristoyltransferase as an antimalarial drug target using an integrated chemical biology approach journal December 2013
Global profiling of co- and post-translationally N-myristoylated proteomes in human cells journal September 2014
High-resolution snapshots of human N-myristoyltransferase in action illuminate a mechanism promoting N-terminal Lys and Gly myristoylation journal February 2020
NMT1 and NMT2 are lysine myristoyltransferases regulating the ARF6 GTPase cycle journal February 2020
Identification of potent and selective N-myristoyltransferase inhibitors of Plasmodium vivax liver stage hypnozoites and schizonts journal September 2023
Fragment-derived inhibitors of human N-myristoyltransferase block capsid assembly and replication of the common cold virus journal May 2018
Discovery of pyridyl-based inhibitors of Plasmodium falciparum N-myristoyltransferase journal January 2015
Structure-guided optimization of quinoline inhibitors of Plasmodium N-myristoyltransferase journal January 2017
Characterization of N-myristoyltransferase from Plasmodium falciparum journal May 2000
The Integrated Resource for Reproducibility in Macromolecular Crystallography: Experiences of the first four years journal November 2019
Protein fatty acid acylation: enzymatic synthesis of an N-myristoylglycyl peptide. journal May 1986
Human N-Myristoyltransferase Amino-terminal Domain Involved in Targeting the Enzyme to the Ribosomal Subcellular Fraction journal November 1997
A Second Mammalian N-Myristoyltransferase journal March 1998
Myristoyl-CoA:Protein N-Myristoyltransferase, an Essential Enzyme and Potential Drug Target in Kinetoplastid Parasites journal February 2003
Relapses ofPlasmodium vivaxInfection Usually Result from Activation of Heterologous Hypnozoites journal April 2007
Phaser crystallographic software journal July 2007
MolProbity : all-atom structure validation for macromolecular crystallography journal December 2009
XDS journal January 2010
PHENIX: a comprehensive Python-based system for macromolecular structure solution journal January 2010
Features and development of Coot journal March 2010
How good are my data and what is the resolution? journal June 2013
Immobilized metal-affinity chromatography protein-recovery screening is predictive of crystallographic structure success journal August 2011
High-throughput protein production and purification at the Seattle Structural Genomics Center for Infectious Disease journal August 2011
Structural genomics of infectious disease drug targets: the SSGCID journal August 2011
The CCP4 suite: integrative software for macromolecular crystallography journal May 2023
Acylation of Proteins with Myristic Acid Occurs Cotranslationally journal November 1987
Uncovering the essential genes of the human malaria parasite Plasmodium falciparum by saturation mutagenesis journal May 2018
Blocking Myristoylation of Src Inhibits Its Kinase Activity and Suppresses Prostate Cancer Progression journal December 2017
The prevention and treatment of Plasmodium vivax malaria journal April 2021
Selective Inhibitors of Protozoan Protein N-myristoyltransferases as Starting Points for Tropical Disease Medicinal Chemistry Programs journal April 2012
The Seattle Structural Genomics Center for Infectious Disease (SSGCID) journal October 2009