Phosphinic Acid-based Inhibitors of Tubulin Polyglutamylases
Overview
Affiliations
Tubulin is subject to a reversible post-translational modification involving polyglutamylation and deglutamylation of glutamate residues in its C-terminal tail. This process plays key roles in regulating the function of microtubule associated proteins, neuronal development, and metastatic progression. This study describes the synthesis and testing of three phosphinic acid-based inhibitors that have been designed to inhibit both the glutamylating and deglutamylating enzymes. The compounds were tested against the polyglutamylase TTLL7 using tail peptides as substrates (100 μM) and the most potent inhibitor displayed an IC₅₀ value of 150 μM. The incorporation of these compounds into tubulin C-terminal tail peptides may lead to more potent TTLL inhibitors.
Tubulin code eraser CCP5 binds branch glutamates by substrate deformation.
Chen J, Zehr E, Gruschus J, Szyk A, Liu Y, Tanner M Nature. 2024; 631(8022):905-912.
PMID: 39020174 DOI: 10.1038/s41586-024-07699-0.
Zhang Q, Feng Z, Shi S, Zhang Y, Ren S Oncol Lett. 2021; 21(2):144.
PMID: 33552263 PMC: 7798100. DOI: 10.3892/ol.2020.12405.
Structural basis for polyglutamate chain initiation and elongation by TTLL family enzymes.
Mahalingan K, Keenan E, Strickland M, Li Y, Liu Y, Ball H Nat Struct Mol Biol. 2020; 27(9):802-813.
PMID: 32747782 DOI: 10.1038/s41594-020-0462-0.
Dissecting the role of the tubulin code in mitosis.
Ferreira L, Figueiredo A, Orr B, Lopes D, Maiato H Methods Cell Biol. 2018; 144:33-74.
PMID: 29804676 PMC: 6402544. DOI: 10.1016/bs.mcb.2018.03.040.
Novel determinants of the neuronal Cl(-) concentration.
Delpire E, Staley K J Physiol. 2014; 592(19):4099-114.
PMID: 25107928 PMC: 4215762. DOI: 10.1113/jphysiol.2014.275529.