6533b860fe1ef96bd12c390f

RESEARCH PRODUCT

Transition state mimics are valuable mechanistic probes for structural studies with the arginine methyltransferase CARM1

Matthijs J Van HarenNils MarechalNathalie Troffer-charlierAgostino CianciulliGianluca SbardellaJean CavarelliNathaniel I MartinChemical Biology And Drug Discovery

subject

Models Molecular0301 basic medicineProtein-Arginine N-MethyltransferasesAdenosineMethyltransferaseCARM1ArgininePRMTCrystallography X-RayPoly(A)-Binding Protein ICofactorMice03 medical and health sciences0302 clinical medicineCatalytic DomainCoactivatorAnimalsAmino Acid Sequencetransition state mimicschemistry.chemical_classificationBinding SitesMultidisciplinarybiologycocrystal structuresActive siteProtein arginine N-methyltransferase; PRMT; CARM1; Transition state mimics; Cocrystal structuresMethylationBiological Sciencesprotein arginine N-methyltransferase030104 developmental biologyEnzymeCARM1chemistryBiochemistry030220 oncology & carcinogenesisbiology.proteinPeptidesProtein Binding

description

Coactivator associated arginine methyltransferase 1 (CARM1) is a member of the protein arginine methyltransferase (PRMT) family and methylates a range of proteins in eukaryotic cells. Overexpression of CARM1 is implicated in a number of cancers, and it is therefore seen as a potential therapeutic target. Peptide sequences derived from the well-defined CARM1 substrate poly(A)-binding protein 1 (PABP1) were covalently linked to an adenosine moiety as in the AdoMet cofactor to generate transition state mimics. These constructs were found to be potent CARM1 inhibitors and also formed stable complexes with the enzyme. High-resolution crystal structures of CARM1 in complex with these compounds confirm a mode of binding that is indeed reflective of the transition state at the CARM1 active site. Given the transient nature of PRMT-substrate complexes, such transition state mimics represent valuable chemical tools for structural studies aimed at deciphering the regulation of arginine methylation mediated by the family of arginine methyltransferases.

yearjournalcountryeditionlanguage
2017-04-04
https://hdl.handle.net/1887/3202886