5MU6

Human N-myristoyltransferase (NMT1) with Myristoyl-CoA and IMP-1088 inhibitor bound

Summary for 5MU6

• Entry DOI: 10.2210/pdb5mu6/pdb
• Related: 4C2Y 4C2Z
• Descriptor: Glycylpeptide N-tetradecanoyltransferase 1, TETRADECANOYL-COA, MAGNESIUM ION, ... (6 entities in total)
• Functional Keywords: n-myristoylation, inhibitor, rhinovirus capsule assembly, transferase
• Biological source: Homo sapiens (Human)
• Total number of polymer chains: 2
• Total formula weight: 94186.52

Authors

Perez-Dorado, I.,Bell, A.S.,Tate, E.W. (deposition date: 2017-01-12, release date: 2018-02-14, Last modification date: 2024-01-17)

Primary citation

Mousnier, A.,Bell, A.S.,Swieboda, D.P.,Morales-Sanfrutos, J.,Perez-Dorado, I.,Brannigan, J.A.,Newman, J.,Ritzefeld, M.,Hutton, J.A.,Guedan, A.,Asfor, A.S.,Robinson, S.W.,Hopkins-Navratilova, I.,Wilkinson, A.J.,Johnston, S.L.,Leatherbarrow, R.J.,Tuthill, T.J.,Solari, R.,Tate, E.W.
Fragment-derived inhibitors of human N-myristoyltransferase block capsid assembly and replication of the common cold virus.
Nat Chem, 10:599-606, 2018

PubMed Abstract: Rhinoviruses (RVs) are the pathogens most often responsible for the common cold, and are a frequent cause of exacerbations in asthma, chronic obstructive pulmonary disease and cystic fibrosis. Here we report the discovery of IMP-1088, a picomolar dual inhibitor of the human N-myristoyltransferases NMT1 and NMT2, and use it to demonstrate that pharmacological inhibition of host-cell N-myristoylation rapidly and completely prevents rhinoviral replication without inducing cytotoxicity. The identification of cooperative binding between weak-binding fragments led to rapid inhibitor optimization through fragment reconstruction, structure-guided fragment linking and conformational control over linker geometry. We show that inhibition of the co-translational myristoylation of a specific virus-encoded protein (VP0) by IMP-1088 potently blocks a key step in viral capsid assembly, to deliver a low nanomolar antiviral activity against multiple RV strains, poliovirus and foot and-mouth disease virus, and protection of cells against virus-induced killing, highlighting the potential of host myristoylation as a drug target in picornaviral infections.

PubMed: 29760414
DOI: 10.1038/s41557-018-0039-2

Experimental method

X-RAY DIFFRACTION (1.88 Å)