Related Experiment Video
Updated: Aug 8, 2026

Elucidating β-1,3-Glucanase and Peroxidase Physicochemical Properties of Wheat Cell Wall Defense Mechanism Against Diuraphis noxia Infestation
Published on: July 26, 2024
A Transglucosylase from Sclerotinia libertiana
1Department of Botany and Plant Pathology, Iowa State University, Ames, Iowa 50011.
Abstract:
A Sclerotinia enzyme preparation with predominant exo-beta-(1-->3)-glucanase activity has the capacity to mediate the formation of tetrasaccharide from 3-O-beta-cellobiosyl-d-glucose or cellotriose, and a pentasaccharide from 3-O-beta-cellotriosyl-d-glucose or cellotetraose. Transglucosylation is not observed when the enzyme is incubated in the presence of laminaritriose, laminaritetraose, or cellobiose. Substrate specificity of the reaction therefore resembles certain features of exo-beta-(1-->4)-glucanases. The optimum pH of the activity is 5.5 and the reaction is inhibited by nojirimycin but not by glucono-1,5-lactone. In contrast to the Sclerotinia glucanase, a Basidiomycete exo-beta-(1-->3)-glucanase has no apparent transglucosylase activity. The results indicate that a transglucosylase may have been an undetected constituent in exo-beta-(1-->3)-glucanase preparations used for promoting growth in auxin-depleted tissues.
More Related Videos
09:55Transposon-insertion Sequencing as a Tool to Elucidate Bacterial Colonization Factors in a Burkholderia gladioli Symbiont of Lagria villosa Beetles
Published on: August 12, 2021
10:24Floral-dip Transformation of Arabidopsis thaliana to Examine pTSO2::β-glucuronidase Reporter Gene Expression
Published on: June 11, 2010
Related Concept Videos
Glucose Transporters
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:
Oligosaccharide Assembly
Multiple sugar molecules that may or may...
Protein Folding Quality Check in the RER