The role of hydrolysis in perceiving and degrading the plant hormone strigolactones

Resumo

As estrigolactonas (SLs) desempenham funções versáteis nas plantas. Os diferentes membros da superfamília α/β‑hidrolase ligam‑se e hidrolisam SLs a taxas variáveis para transduzir seu sinal ou manter a homeostase das SLs. Trabalho recente de Palayam et al. sobre carboxilesterases (CXEs) degradadoras de SLs descobre elementos estruturais que determinam o mecanismo, a eficiência da hidrólise de SLs e as funções biológicas.

Abstract

Strigolactones (SLs) perform versatile functions in plants. The different members of the α/β-hydrolase superfamily bind and hydrolyze SLs at varying rates to transduce their signal or maintain SL homeostasis. Recent work by Palayam et al. on SL-degrading carboxylesterases (CXEs) uncovers structural elements that determine the mechanism, efficiency of SL hydrolysis, and biological functions.