Analysis of 51 cyclodipeptide synthases reveals the basis for substrate specificity. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Nature Chemical Biology Année : 2015

Analysis of 51 cyclodipeptide synthases reveals the basis for substrate specificity.

Alain Lecoq
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Résumé

Cyclodipeptide synthases (CDPSs) constitute a family of peptide bond-forming enzymes that use aminoacyl-tRNAs for the synthesis of cyclodipeptides. Here, we describe the activity of 41 new CDPSs. We also show that CDPSs can be classified into two main phylogenetically distinct subfamilies characterized by specific functional subsequence signatures, named NYH and XYP. All 11 previously characterized CDPSs belong to the NYH subfamily, suggesting that further special features may be yet to be discovered in the other subfamily. CDPSs synthesize a large diversity of cyclodipeptides made up of 17 proteinogenic amino acids. The identification of several CDPSs having the same specificity led us to determine specificity sequence motifs that, in combination with the phylogenetic distribution of CDPSs, provide a first step toward being able to predict the cyclodipeptides synthesized by newly discovered CDPSs. The determination of the activity of ten more CDPSs with predicted functions constitutes a first experimental validation of this predictive approach.
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Dates et versions

hal-01430815 , version 1 (10-01-2017)

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Citer

Isabelle B Jacques, Mireille Moutiez, Jerzy Witwinowski, Emmanuelle Darbon, Cécile Martel, et al.. Analysis of 51 cyclodipeptide synthases reveals the basis for substrate specificity.. Nature Chemical Biology, 2015, 11 (9), pp.721-7. ⟨10.1038/nchembio.1868⟩. ⟨hal-01430815⟩
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