Discovery and Characterization of Mannan-Specialized GH5 Endo-1,4-β-mannanases: a Strategy for Acai (Euterpe oleracea Mart.) Seeds Upgrading.

ABSTRACT: The pulp of açaí palm fruits (Euterpe oleracea Mart.) is a valuable export commodity in Brazil. Its production generates 1.6 million tons/year of açaí seeds, a resource largely wasted. The seeds consist mainly of linear β-mannan, offering potential for prebiotic β-mannan-derived oligomers and mannose production. However, the crystalline structures of β-mannan hinder enzymatic hydrolysis. This study aimed to discover and characterize fungal enzymes targeting açaí seed β-mannan using a palm β-mannanase (EgMan5A) as a guide. Recombinant expression, enzyme optimization, kinetics, substrate specificity, and structural modeling were performed. The two fungal enzymes, JaMan5A and SlMan5A, were found to be specific for unsubstituted mannan, showing no activity toward ga

SUBMITTER: Espinheira RP 

PROVIDER: S-EPMC11726631 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature