Digestive peptidase evolution in holometabolous insects led to a divergent group of enzymes in Lepidoptera
KAUST Grant NumberKUK-I1-012-43
Permanent link to this recordhttp://hdl.handle.net/10754/597981
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Abstract© 2015 Elsevier Ltd. Trypsins and chymotrypsins are well-studied serine peptidases that cleave peptide bonds at the carboxyl side of basic and hydrophobic l-amino acids, respectively. These enzymes are largely responsible for the digestion of proteins. Three primary processes regulate the activity of these peptidases: secretion, precursor (zymogen) activation and substrate-binding site recognition. Here, we present a detailed phylogenetic analysis of trypsins and chymotrypsins in three orders of holometabolous insects and reveal divergent characteristics of Lepidoptera enzymes in comparison with those of Coleoptera and Diptera. In particular, trypsin subsite S1 was more hydrophilic in Lepidoptera than in Coleoptera and Diptera, whereas subsites S2-S4 were more hydrophobic, suggesting different substrate preferences. Furthermore, Lepidoptera displayed a lineage-specific trypsin group belonging only to the Noctuidae family. Evidence for facilitated trypsin auto-activation events were also observed in all the insect orders studied, with the characteristic zymogen activation motif complementary to the trypsin active site. In contrast, insect chymotrypsins did not seem to have a peculiar evolutionary history with respect to their mammal counterparts. Overall, our findings suggest that the need for fast digestion allowed holometabolous insects to evolve divergent groups of peptidases with high auto-activation rates, and highlight that the evolution of trypsins led to a most diverse group of enzymes in Lepidoptera.
CitationDias RO, Via A, Brandão MM, Tramontano A, Silva-Filho MC (2015) Digestive peptidase evolution in holometabolous insects led to a divergent group of enzymes in Lepidoptera. Insect Biochemistry and Molecular Biology 58: 1–11. Available: http://dx.doi.org/10.1016/j.ibmb.2014.12.009.
SponsorsThis work was supported by Sao Paulo Research Foundation (FAPESP) grants 2008/52067-3, to MCSF, 2010/17110-5 and 2012/03040-0 to ROD and 2011/00417-3 to MMB. This work was also supported by Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) grant 482737/2012-3 to MCSF. AV is supported by the King Abdullah University of Science and Technology (KAUST, grant KUK-I1-012-43). We thank Walter R. Terra for critical reading of this manuscript. MCSF is also a research fellow of CNPq.
CollectionsPublications Acknowledging KAUST Support
- Substrate specificity of insect trypsins and the role of their subsites in catalysis.
- Authors: Lopes AR, Juliano MA, Marana SR, Juliano L, Terra WR
- Issue date: 2006 Feb
- Subsite substrate specificity of midgut insect chymotrypsins.
- Authors: Sato PM, Lopes AR, Juliano L, Juliano MA, Terra WR
- Issue date: 2008 Jun
- Coevolution of insect trypsins and inhibitors.
- Authors: Lopes AR, Juliano MA, Juliano L, Terra WR
- Issue date: 2004 Mar
- Insect chymotrypsins: chloromethyl ketone inactivation and substrate specificity relative to possible coevolutional adaptation of insects and plants.
- Authors: Lopes AR, Sato PM, Terra WR
- Issue date: 2009 Mar
- Cloning and characterization of trypsin- and chymotrypsin-like genes in the striped rice stem borer, Chilo suppressalis.
- Authors: Ge ZY, Wan PJ, Han ZJ
- Issue date: 2012 Apr